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Barra A, Nunes C, Ruiz-Hitzky E, Ferreira P. Green Carbon Nanostructures for Functional Composite Materials. Int J Mol Sci 2022; 23:ijms23031848. [PMID: 35163770 PMCID: PMC8836917 DOI: 10.3390/ijms23031848] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2021] [Revised: 01/19/2022] [Accepted: 01/31/2022] [Indexed: 12/21/2022] Open
Abstract
Carbon nanostructures are widely used as fillers to tailor the mechanical, thermal, barrier, and electrical properties of polymeric matrices employed for a wide range of applications. Reduced graphene oxide (rGO), a carbon nanostructure from the graphene derivatives family, has been incorporated in composite materials due to its remarkable electrical conductivity, mechanical strength capacity, and low cost. Graphene oxide (GO) is typically synthesized by the improved Hummers’ method and then chemically reduced to obtain rGO. However, the chemical reduction commonly uses toxic reducing agents, such as hydrazine, being environmentally unfriendly and limiting the final application of composites. Therefore, green chemical reducing agents and synthesis methods of carbon nanostructures should be employed. This paper reviews the state of the art regarding the green chemical reduction of graphene oxide reported in the last 3 years. Moreover, alternative graphitic nanostructures, such as carbons derived from biomass and carbon nanostructures supported on clays, are pointed as eco-friendly and sustainable carbonaceous additives to engineering polymer properties in composites. Finally, the application of these carbon nanostructures in polymer composites is briefly overviewed.
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Affiliation(s)
- Ana Barra
- Department of Materials and Ceramic Engineering, CICECO–Aveiro Institute of Materials, University of Aveiro, 3810-193 Aveiro, Portugal;
- Materials Science Institute of Madrid, CSIC, c/Sor Juana Inés de la Cruz 3, 28049 Madrid, Spain;
| | - Cláudia Nunes
- Department of Materials and Ceramic Engineering, CICECO–Aveiro Institute of Materials, University of Aveiro, 3810-193 Aveiro, Portugal;
- Correspondence: (C.N.); (P.F.); Tel.: +351-234-370200 (P.F.)
| | - Eduardo Ruiz-Hitzky
- Materials Science Institute of Madrid, CSIC, c/Sor Juana Inés de la Cruz 3, 28049 Madrid, Spain;
| | - Paula Ferreira
- Department of Materials and Ceramic Engineering, CICECO–Aveiro Institute of Materials, University of Aveiro, 3810-193 Aveiro, Portugal;
- Correspondence: (C.N.); (P.F.); Tel.: +351-234-370200 (P.F.)
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2
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Patil AG. Facile one pot microbe-mediated in situsynthesis and antibacterial activity of reduced graphene oxide-silver nanocomposite. Nanotechnology 2022; 33:135603. [PMID: 34933299 DOI: 10.1088/1361-6528/ac4521] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/06/2021] [Accepted: 12/21/2021] [Indexed: 06/14/2023]
Abstract
The present research deals with the development of a novel bioinspiredin situfabrication of reduced graphene oxide (rGO)-silver nanoparticle (AgNPs) nanocomposite (rGO@AgNCs) using microbes namelyPseudomonas aeruginosa(PA) andStaphylococcus aureus(SA). The fabricated rGO@AgNCs were characterized using Ultraviolet-visible (UV-Vis) spectroscopy, Fourier-transform infrared spectroscopy (FTIR), particle size analysis, polydispersity index (PDI), zeta potential analysis, energy dispersive x-ray analysis (EDAX), Raman spectroscopy, powder x-ray diffraction (PXRD), high-resolution transmission electron microscopy (HR-TEM) analysis, etc. Furthermore, the rGO@AgNCs-PA and rGO@AgNCs-SA interaction with serum protein, pH stability study, andin vitrodissolution of AgNPs were also performed. The research findings of the proposed study demonstrated the simultaneous reduction of graphene oxide (GO) and AgNPs and the formation of rGO@AgNCs in the presence of microbes. Thein vitrodissolution studies of rGO@AgNCs composites showed better AgNPs dissolution with controlled release and offered remarkable matrix integrity throughout the dissolution period. The size and stability of rGO@AgNCs-PA and rGO@AgNCs-SA had no significant changes at physiological pH 7.4. A minimal decrease in the zeta potential of rGO@AgNCs was observed, which may be due to the weak interaction of nanocomposites and albumin. The antibacterial application of the synthesized nanocomposite was evaluated against a pathogenic mastitis-forming bacterium. The obtained results suggested an admirable antibacterial activity of synthesized nanocomposites against the tested microbes. This knowledge will assist the scientific fraternity in designing novel antibacterial agents with enhanced antibacterial activity against various veterinary pathogens in near future.
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Affiliation(s)
- Ashwini G Patil
- Department of Microbiology, R. C. Patel Arts, Science and Commerce College, Shirpur, 425405, Maharashtra, India
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Yan Y, Chen Y, Li Y, Wu X, Jin C, Wang Z. Synthesis of Si/Fe 2O 3-Anchored rGO Frameworks as High-Performance Anodes for Li-Ion Batteries. Int J Mol Sci 2021; 22:11041. [PMID: 34681699 PMCID: PMC8539548 DOI: 10.3390/ijms222011041] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2021] [Revised: 10/07/2021] [Accepted: 10/11/2021] [Indexed: 12/27/2022] Open
Abstract
By virtue of the high theoretical capacity of Si, Si-related materials have been developed as promising anode candidates for high-energy-density batteries. During repeated charge/discharge cycling, however, severe volumetric variation induces the pulverization and peeling of active components, causing rapid capacity decay and even development stagnation in high-capacity batteries. In this study, the Si/Fe2O3-anchored rGO framework was prepared by introducing ball milling into a melt spinning and dealloying process. As the Li-ion battery (LIB) anode, it presents a high reversible capacity of 1744.5 mAh g-1 at 200 mA g-1 after 200 cycles and 889.4 mAh g-1 at 5 A g-1 after 500 cycles. The outstanding electrochemical performance is due to the three-dimensional cross-linked porous framework with a high specific surface area, which is helpful to the transmission of ions and electrons. Moreover, with the cooperation of rGO, the volume expansion of Si is effectively alleviated, thus improving cycling stability. The work provides insights for the design and preparation of Si-based materials for high-performance LIB applications.
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Affiliation(s)
- Yajing Yan
- School of Materials Science and Engineering, Hebei University of Technology, Tianjin 300401, China; (Y.Y.); (Y.C.); (X.W.); (C.J.)
- Key Laboratory for New Type of Functional Materials in Hebei Province, Hebei University of Technology, Tianjin 300401, China
| | - Yanxu Chen
- School of Materials Science and Engineering, Hebei University of Technology, Tianjin 300401, China; (Y.Y.); (Y.C.); (X.W.); (C.J.)
| | - Yongyan Li
- School of Materials Science and Engineering, Hebei University of Technology, Tianjin 300401, China; (Y.Y.); (Y.C.); (X.W.); (C.J.)
| | - Xiaoyu Wu
- School of Materials Science and Engineering, Hebei University of Technology, Tianjin 300401, China; (Y.Y.); (Y.C.); (X.W.); (C.J.)
| | - Chao Jin
- School of Materials Science and Engineering, Hebei University of Technology, Tianjin 300401, China; (Y.Y.); (Y.C.); (X.W.); (C.J.)
| | - Zhifeng Wang
- School of Materials Science and Engineering, Hebei University of Technology, Tianjin 300401, China; (Y.Y.); (Y.C.); (X.W.); (C.J.)
- Key Laboratory for New Type of Functional Materials in Hebei Province, Hebei University of Technology, Tianjin 300401, China
- Research Institute of Foundry, Hebei University of Technology, Tianjin 300401, China
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Reagen S, Wu Y, Liu X, Shahni R, Bogenschuetz J, Wu X, Chu QR, Oncel N, Zhang J, Hou X, Combs C, Vasquez A, Zhao JX. Synthesis of Highly Near-Infrared Fluorescent Graphene Quantum Dots Using Biomass-Derived Materials for In Vitro Cell Imaging and Metal Ion Detection. ACS Appl Mater Interfaces 2021; 13:43952-43962. [PMID: 34495635 DOI: 10.1021/acsami.1c10533] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Graphene quantum dots (GQDs) are a subset of fluorescent nanomaterials that have gained recent interest due to their photoluminescence properties and low toxicity and biocompatibility features for bioanalysis and bioimaging. However, it is still a challenge to prepare highly near-infrared (NIR) fluorescent GQDs using a facile pathway. In this study, NIR GQDs were synthesized from the biomass-derived organic molecule cis-cyclobutane-1,2-dicarboxylic acid via one-step pyrolysis. The resulting GQDs were then characterized by various analytical methods such as UV-Vis absorption spectroscopy, fluorescence spectroscopy, dynamic light scattering, high-resolution transmission electron microscopy, Fourier transform infrared spectroscopy, X-ray diffraction, and X-ray photoelectron spectroscopy. Moreover, the photostability and stability over a wide pH range were also investigated, which indicated the excellent stability of the prepared GQDs. Most importantly, two peaks were found in the fluorescence emission spectra of the GQDs, one of which was located in the NIR region of about 860 nm. Finally, the GQDs were applied for cell imaging with human breast cancer cell line, MCF-7, and cytotoxicity analysis with mouse macrophage cell line, RAW 246.7. The results showed that the GQDs entered the cells through endocytosis on the fluorescence images and were not toxic to the cells up to a concentration of 200 μg/mL. Thus, the developed GQDs could be a potential effective fluorescent bioimaging agent. Finally, the GQDs depicted fluorescence quenching when treated with mercury metal ions, indicating that the GQDs could be used for mercury detection in biological samples as well.
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Affiliation(s)
- Sarah Reagen
- Department of Chemistry, University of North Dakota, Grand Forks, North Dakota 58202, United States
| | - Yingfen Wu
- Department of Chemistry, University of North Dakota, Grand Forks, North Dakota 58202, United States
| | - Xiao Liu
- Department of Chemistry, University of North Dakota, Grand Forks, North Dakota 58202, United States
| | - Rahul Shahni
- Department of Chemistry, University of North Dakota, Grand Forks, North Dakota 58202, United States
| | - Jacob Bogenschuetz
- Department of Physics and Astrophysics, University of North Dakota, Grand Forks, North Dakota 58202, United States
| | - Xu Wu
- Department of Chemistry, University of North Dakota, Grand Forks, North Dakota 58202, United States
| | - Qianli R Chu
- Department of Chemistry, University of North Dakota, Grand Forks, North Dakota 58202, United States
| | - Nuri Oncel
- Department of Physics and Astrophysics, University of North Dakota, Grand Forks, North Dakota 58202, United States
| | - Jin Zhang
- Institute for Energy Studies, University of North Dakota, Grand Forks, North Dakota 58202, United States
| | - Xiaodong Hou
- Institute for Energy Studies, University of North Dakota, Grand Forks, North Dakota 58202, United States
| | - Colin Combs
- Department of Biomedical Sciences, University of North Dakota, Grand Forks, North Dakota 58202, United States
| | - Antonio Vasquez
- Department of Chemistry, University of North Dakota, Grand Forks, North Dakota 58202, United States
| | - Julia Xiaojun Zhao
- Department of Chemistry, University of North Dakota, Grand Forks, North Dakota 58202, United States
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Freire TM, Sant'Anna C, Yoshihara N, Hu R, Qu J, Alencar LMR, Oliveira da Silva de Barros A, Helal-Neto E, Fernandes LR, Simoes RL, Barja-Fidalgo C, Fechine PBA, Santos-Oliveira R. Biomedical application of graphitic carbon nitrides: tissue deposition in vivo, induction of reactive oxygen species (ROS) and cell viability in tumor cells. Nanotechnology 2021; 32:435301. [PMID: 34271563 DOI: 10.1088/1361-6528/ac1540] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/08/2021] [Accepted: 07/16/2021] [Indexed: 06/13/2023]
Abstract
The urgency for new materials in oncology is immediate. In this study we have developed the g-C3N4, a graphitic-like structure formed by periodically linked tris-s-triazine units. The g-C3N4has been synthesized by a simple and fast thermal process. XRD has shown the formation of the crystalline sheet with a compacted structure. The graphite-like structure and the functional groups have been shown by Raman and FTIR spectroscopy. TEM image and AFM revealed the porous composed of five or six C-N layers stacked. DRS and Photoluminescence analyses confirmed the structure with band gap of 2.87 eV and emission band at 448 nm in different wavelengths excitation conditions. The biological results showed inhibitory effect on cancer cell lines and non-toxic effect in normal cell lines. To the best of our knowledge, this is the first work demonstrating the cytotoxic effects of 2D g-C3N4in a cancer cell line, without any external or synergistic influence. The biodistribution/tissue accumulation showed that g-C3N4present a tendency to accumulation on the lung in the first 2 h, but after 24 h the profile of the biodistribution change and it is found mainly in the liver. Thus, 2D-g-C3N4showed great potential for the treatment of several cancer types.
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Affiliation(s)
- Tiago Melo Freire
- Group of Chemistry of Advanced Materials (GQMat)- Department of Analytical Chemistry and Physical-Chemistry, Federal University of Ceará, Fortaleza-CE, 451-970, Brazil
| | - Celso Sant'Anna
- National Institute of Metrology, Quality and Technology, Laboratory of Microscopy Applied to Life Science, Duque de Caxias-RJ, 24250020, Brazil
| | - Natalia Yoshihara
- National Institute of Metrology, Quality and Technology, Laboratory of Microscopy Applied to Life Science, Duque de Caxias-RJ, 24250020, Brazil
| | - Rui Hu
- Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, People's Republic of China
| | - Junle Qu
- Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, People's Republic of China
| | | | - Aline Oliveira da Silva de Barros
- Brazilian Nuclear Energy Commission, Nuclear Engineering Institute, Laboratory of Nanoradiopharmacy and Synthesis of New Radiopharmaceuticals, Rio de Janeiro-RJ, 21941906, Brazil
| | - Edward Helal-Neto
- Brazilian Nuclear Energy Commission, Nuclear Engineering Institute, Laboratory of Nanoradiopharmacy and Synthesis of New Radiopharmaceuticals, Rio de Janeiro-RJ, 21941906, Brazil
| | - Laila Ribeiro Fernandes
- Laboratory of Biology of Endothelial Cells and Angiogenesis (LabAngio), Department of Cell Biology, IBRAG, Universidade do Estado do Rio de Janeiro, Rio de Janeiro-RJ 20550- 900, Brazil
- Zona Oeste State University, Laboratory of Nanoradiophasrmacy and Strategic Biomaterials, Rio de Janeiro-RJ, 220000, Brazil
| | - Rafael L Simoes
- Brazilian Nuclear Energy Commission, Nuclear Engineering Institute, Laboratory of Nanoradiopharmacy and Synthesis of New Radiopharmaceuticals, Rio de Janeiro-RJ, 21941906, Brazil
- Zona Oeste State University, Laboratory of Nanoradiophasrmacy and Strategic Biomaterials, Rio de Janeiro-RJ, 220000, Brazil
- Laboratory of Cellular and Molecular Pharmacology, Department of Cell Biology, IBRAG, Universidade do Estado do Rio de Janeiro, Rio de Janeiro-RJ 21040900, Brazil
| | - Christina Barja-Fidalgo
- Laboratory of Cellular and Molecular Pharmacology, Department of Cell Biology, IBRAG, Universidade do Estado do Rio de Janeiro, Rio de Janeiro-RJ 21040900, Brazil
| | - Pierre B A Fechine
- Group of Chemistry of Advanced Materials (GQMat)- Department of Analytical Chemistry and Physical-Chemistry, Federal University of Ceará, Fortaleza-CE, 451-970, Brazil
| | - Ralph Santos-Oliveira
- Brazilian Nuclear Energy Commission, Nuclear Engineering Institute, Laboratory of Nanoradiopharmacy and Synthesis of New Radiopharmaceuticals, Rio de Janeiro-RJ, 21941906, Brazil
- Zona Oeste State University, Laboratory of Nanoradiophasrmacy and Strategic Biomaterials, Rio de Janeiro-RJ, 220000, Brazil
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Chen S, Shi M, Xu Q, Xu J, Duan X, Gao Y, Lu L, Gao F, Wang X, Yu Y. Ti 3C 2T xMXene/nitrogen-doped reduced graphene oxide composite: a high-performance electrochemical sensing platform for adrenaline detection. Nanotechnology 2021; 32:265501. [PMID: 33730698 DOI: 10.1088/1361-6528/abef94] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/11/2020] [Accepted: 03/17/2021] [Indexed: 06/12/2023]
Abstract
Herein, Ti3C2TxMXene/N-doped reduced graphene oxide (MXene/N-rGO) composite was employed as the electrocatalyst to construct a new electrochemical sensing platform for the determination of adrenaline (AD). The MXene/N-rGO was synthesized via a facile one-step hydrothermal method, where ethylenediamine acted as a reducing agent and N source. The doped N in rGO served as a bridge between MXene and rGO through tight hydrogen bonds. Scanning electron microscopy showed that large numbers of MXenes with accordion-like morphology were distributed on the surface of the N-rGO. The MXene/N-rGO composite displayed a synergetic catalytic effect for oxidizing AD, originating from the unique catalytic activity of N-rGO and the large surface area and satisfactory conductivity of MXene. These characteristics of composite material led to a remarkable effect on signal amplification for the detection of AD, with a wide linear range from 10.0 nM to 90.0μM and a low detection limit of 3.0 nM based on a signal to noise ratio of 3. Moreover, the MXene/N-rGO electrode displayed good stability, repeatability, and reproducibility. Additionally, the proposed sensor was successfully applied for voltammetric sensing of AD in urine with recoveries from 97.75% to 103.0%.
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Affiliation(s)
- Shuxian Chen
- Jiangxi Provincial Key Laboratory of Drug Design and Evaluation, Engineering Center of Jiangxi University for Fine Chemicals, School of Pharmacy, Jiangxi Science and Technology Normal University, Nanchang 330013, People's Republic of China
- Key Laboratory of Crop Physiology, Ecology and Genetic Breeding, Ministry of Education, Key Laboratory of Chemical Utilization of Plant Resources of Nanchang, College of Science, Jiangxi Agricultural University, Nanchang 330045, People's Republic of China
| | - Min Shi
- Jiangxi Provincial Key Laboratory of Drug Design and Evaluation, Engineering Center of Jiangxi University for Fine Chemicals, School of Pharmacy, Jiangxi Science and Technology Normal University, Nanchang 330013, People's Republic of China
| | - Quan Xu
- Jiangxi Provincial Key Laboratory of Drug Design and Evaluation, Engineering Center of Jiangxi University for Fine Chemicals, School of Pharmacy, Jiangxi Science and Technology Normal University, Nanchang 330013, People's Republic of China
| | - Jingkun Xu
- Jiangxi Provincial Key Laboratory of Drug Design and Evaluation, Engineering Center of Jiangxi University for Fine Chemicals, School of Pharmacy, Jiangxi Science and Technology Normal University, Nanchang 330013, People's Republic of China
- School of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, Shandong, People's Republic of China
| | - Xuemin Duan
- Jiangxi Provincial Key Laboratory of Drug Design and Evaluation, Engineering Center of Jiangxi University for Fine Chemicals, School of Pharmacy, Jiangxi Science and Technology Normal University, Nanchang 330013, People's Republic of China
| | - Yansha Gao
- Key Laboratory of Crop Physiology, Ecology and Genetic Breeding, Ministry of Education, Key Laboratory of Chemical Utilization of Plant Resources of Nanchang, College of Science, Jiangxi Agricultural University, Nanchang 330045, People's Republic of China
| | - Limin Lu
- Key Laboratory of Crop Physiology, Ecology and Genetic Breeding, Ministry of Education, Key Laboratory of Chemical Utilization of Plant Resources of Nanchang, College of Science, Jiangxi Agricultural University, Nanchang 330045, People's Republic of China
- School of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, Shandong, People's Republic of China
| | - Feng Gao
- Key Laboratory of Crop Physiology, Ecology and Genetic Breeding, Ministry of Education, Key Laboratory of Chemical Utilization of Plant Resources of Nanchang, College of Science, Jiangxi Agricultural University, Nanchang 330045, People's Republic of China
| | - Xiaoqiang Wang
- Key Laboratory of Crop Physiology, Ecology and Genetic Breeding, Ministry of Education, Key Laboratory of Chemical Utilization of Plant Resources of Nanchang, College of Science, Jiangxi Agricultural University, Nanchang 330045, People's Republic of China
| | - Yongfang Yu
- Key Laboratory of Crop Physiology, Ecology and Genetic Breeding, Ministry of Education, Key Laboratory of Chemical Utilization of Plant Resources of Nanchang, College of Science, Jiangxi Agricultural University, Nanchang 330045, People's Republic of China
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Ahamed M, Akhtar MJ, Khan MAM, Alhadlaq HA. SnO 2-Doped ZnO/Reduced Graphene Oxide Nanocomposites: Synthesis, Characterization, and Improved Anticancer Activity via Oxidative Stress Pathway. Int J Nanomedicine 2021; 16:89-104. [PMID: 33447029 PMCID: PMC7802795 DOI: 10.2147/ijn.s285392] [Citation(s) in RCA: 58] [Impact Index Per Article: 19.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2020] [Accepted: 11/30/2020] [Indexed: 01/04/2023] Open
Abstract
BACKGROUND Therapeutic selectivity and drug resistance are critical issues in cancer therapy. Currently, zinc oxide nanoparticles (ZnO NPs) hold considerable promise to tackle this problem due to their tunable physicochemical properties. This work was designed to prepare SnO2-doped ZnO NPs/reduced graphene oxide nanocomposites (SnO2-ZnO/rGO NCs) with enhanced anticancer activity and better biocompatibility than those of pure ZnO NPs. MATERIALS AND METHODS Pure ZnO NPs, SnO2-doped ZnO (SnO2-ZnO) NPs, and SnO2-ZnO/rGO NCs were prepared via a facile hydrothermal method. Prepared samples were characterized by field emission transmission electron microscopy (FETEM), energy dispersive spectroscopy (EDS), field emission scanning electron microscopy (FESEM), X-ray diffraction (XRD), ultraviolet-visible (UV-VIS) spectrometer, and dynamic light scattering (DLS) techniques. Selectivity and anticancer activity of prepared samples were assessed in human breast cancer (MCF-7) and human normal breast epithelial (MCF10A) cells. Possible mechanisms of anticancer activity of prepared samples were explored through oxidative stress pathway. RESULTS XRD spectra of SnO2-ZnO/rGO NCs confirmed the formation of single-phase of hexagonal wurtzite ZnO. High resolution TEM and SEM mapping showed homogenous distribution of SnO2 and rGO in ZnO NPs with high quality lattice fringes without any distortion. Band gap energy of SnO2-ZnO/rGO NCs was lower compared to SnO2-ZnO NPs and pure ZnO NPs. The SnO2-ZnO/rGO NCs exhibited significantly higher anticancer activity against MCF-7 cancer cells than those of SnO2-ZnO NPs and ZnO NPs. The SnO2-ZnO/rGO NCs induced apoptotic response through the upregulation of caspase-3 gene and depletion of mitochondrial membrane potential. Mechanistic study indicated that SnO2-ZnO/rGO NCs kill cancer cells through oxidative stress pathway. Moreover, biocompatibility of SnO2-ZnO/rGO NCs was also higher against normal breast epithelial (MCF10A cells) in comparison to SnO2-ZnO NPs and ZnO NPs. CONCLUSION SnO2-ZnO/rGO NCs showed enhanced anticancer activity and better biocompatibility than SnO2-ZnO NPs and pure ZnO NPs. This work suggested a new approach to improve the selectivity and anticancer activity of ZnO NPs. Studies on antitumor activity of SnO2-ZnO/rGO NCs in animal models are further warranted.
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Affiliation(s)
- Maqusood Ahamed
- King Abdullah Institute for Nanotechnology, King Saud University, Riyadh11451, Saudi Arabia
| | - Mohd Javed Akhtar
- King Abdullah Institute for Nanotechnology, King Saud University, Riyadh11451, Saudi Arabia
| | - M A Majeed Khan
- King Abdullah Institute for Nanotechnology, King Saud University, Riyadh11451, Saudi Arabia
| | - Hisham A Alhadlaq
- King Abdullah Institute for Nanotechnology, King Saud University, Riyadh11451, Saudi Arabia
- Department of Physics and Astronomy, College of Science, King Saud University, Riyadh11451, Saudi Arabia
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Shirani M, Akbari-Adergani B, Rashidi Nodeh H, Shahabuddin S. Ultrasonication-facilitated synthesis of functionalized graphene oxide for ultrasound-assisted magnetic dispersive solid-phase extraction of amoxicillin, ampicillin, and penicillin G. Mikrochim Acta 2020; 187:634. [PMID: 33128630 DOI: 10.1007/s00604-020-04605-z] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2020] [Accepted: 10/20/2020] [Indexed: 12/14/2022]
Abstract
A simplistic approach is presented for the synthesis of ultrasonically fabricated graphene oxide functionalized with polyaniline and N-[3-(Trimethoxysilyl)propyl]ethylenediamine. The synthesized nanocomposite was then employed for the facile, green, ultrasound-assisted, magnetic dispersive solid-phase extraction of amoxicillin, ampicillin, and penicillin G in milk samples and infant formula prior to high-performance liquid chromatography-ultraviolet determination. The designed nanocomposites were comprehensively characterized using field emission scanning electron microscopy, energy-dispersive X-ray spectroscopy, transmission electron microscopy, X-ray powder diffraction, and Fourier transform infrared spectroscopy. In order to achieve the best extraction efficiencies, the influential parameters including pH, amount of magnetic sorbent, type and volume of elution solvent, extraction time, sample volume, and desorption time were assessed. At the optimum conditions, linear ranges of 2.5-1000 (μg L-1) for ampicillin and penicillin G and a linear range of 2.5-750 (μg L-1) were obtained for amoxicillin at optimum conditions. Moreover, the limits of detection (S/N = 3) of 0.5, 0.8, and 0.9 (μg L-1) were obtained for amoxicillin, ampicillin, and penicillin G, respectively. The precision (relative standard deviations (%)) values of 3.1, 2.6, and 2.5 at the concentration of 50 μg L-1 for seven replicates were obtained for ampicillin, amoxicillin, and penicillin G, respectively. The efficiencies of ≤ 96% and relative standard deviations of less than 3.1% were also obtained thereby confirming the high potential of the synthesized nanocomposites for simultaneous preconcentration and separation of the β-lactam antibiotics in complex matrixes. Graphical Abstract.
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Affiliation(s)
- Mahboube Shirani
- Department of Chemistry, Faculty of Science, University of Jiroft, Jiroft, 7867161167, Iran.
| | - Behrouz Akbari-Adergani
- Food and Drug Laboratory Research Center, Food and Drug Administration, Ministry of Health and Medical Education, Tehran, Islamic Republic of Iran
| | - Hamid Rashidi Nodeh
- Department of Food Science and Technology, Faculty of Food Industry and Agriculture, Standard Research Institute, Karaj, Iran
| | - Syed Shahabuddin
- Department of Science, School of Technology, Pandit Deendayal Petroleum University, Raisan Village, Gandhinagar, Gujarat, 382007, India.
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Shamsi S, Alagan AA, Sarchio SNE, Md Yasin F. Synthesis, Characterization, and Toxicity Assessment of Pluronic F127-Functionalized Graphene Oxide on the Embryonic Development of Zebrafish ( Danio rerio). Int J Nanomedicine 2020; 15:8311-8329. [PMID: 33149578 PMCID: PMC7604977 DOI: 10.2147/ijn.s271159] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2020] [Accepted: 08/29/2020] [Indexed: 12/25/2022] Open
Abstract
BACKGROUND In the current literature, there are ongoing debates on the toxicity of graphene oxide (GO) that demonstrate contradictory findings regarding its toxicity profile. As a potential drug carrier, these findings are very concerning due to the safety concerns in humans, as well as the dramatic rise of GO being excreted into the environment. Therefore, there is an imperative need to mitigate the potential toxicity of GO to allow for a safer application in the future. PURPOSE The present study aims to address this issue by functionalizing GO with Pluronic F127 (PF) as a means to mitigate toxicity and resolve the biocompatibility of GO. Although results from previous studies generally indicated that Pluronic functionalized GO exhibits relatively low toxicity to living organisms, reports that emphasize on its toxicity, particularly during embryonic developmental stage, are still scarce. METHODS In the present study, two different sizes of native GO samples, GO and NanoGO, as well as PF-functionalized GO, GO-PF and NanoGO-PF, were prepared and characterized using DLS, UV-Vis, Raman spectroscopy, FTIR, and FESEM analyses. Toxicological assessment of all GO samples (0-100 µg/mL) on zebrafish embryonic developmental stages (survival, hatching and heart rates, and morphological changes) was recorded daily for up to 96 hours post-fertilization (hpf). RESULTS The toxicity effects of each GO sample were observed to be higher at increasing concentrations and upon prolonged exposure. NanoGO demonstrated lower toxicity effects compared to GO. GO-PF and NanoGO-PF were also found to have lower toxicity effects compared to native GO samples. GO-PF showed the lowest toxicity response on zebrafish embryo. CONCLUSION These findings highlight that toxicity is dependent on the concentration, size, and exposure period of GO. Functionalization of GO with PF through surface coating could potentially mitigate the toxicity effects of GO in embryonic developmental stages, but further investigation is warranted for broader future applications.
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Affiliation(s)
- Suhaili Shamsi
- Laboratory of Animal Biochemistry and Biotechnology, Department of Biochemistry, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia, Serdang, Selangor43400, Malaysia
| | - Addison Alvin Alagan
- Laboratory of Animal Biochemistry and Biotechnology, Department of Biochemistry, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia, Serdang, Selangor43400, Malaysia
| | - Seri Narti Edayu Sarchio
- Department of Biomedical Sciences, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, Serdang, Selangor43400, Malaysia
| | - Faizah Md Yasin
- Department of Chemical and Environmental Engineering, Faculty of Engineering, Universiti Putra Malaysia, Serdang, Selangor43400, Malaysia
- Institute of Advanced Technology, Faculty of Engineering, Universiti Putra Malaysia, Serdang, Selangor43400, Malaysia
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10
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Zhao C, Song X, Liu Y, Fu Y, Ye L, Wang N, Wang F, Li L, Mohammadniaei M, Zhang M, Zhang Q, Liu J. Synthesis of graphene quantum dots and their applications in drug delivery. J Nanobiotechnology 2020; 18:142. [PMID: 33008457 PMCID: PMC7532648 DOI: 10.1186/s12951-020-00698-z] [Citation(s) in RCA: 66] [Impact Index Per Article: 16.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2020] [Accepted: 09/24/2020] [Indexed: 12/23/2022] Open
Abstract
This review focuses on the recent advances in the synthesis of graphene quantum dots (GQDs) and their applications in drug delivery. To give a brief understanding about the preparation of GQDs, recent advances in methods of GQDs synthesis are first presented. Afterwards, various drug delivery-release modes of GQDs-based drug delivery systems such as EPR-pH delivery-release mode, ligand-pH delivery-release mode, EPR-Photothermal delivery-Release mode, and Core/Shell-photothermal/magnetic thermal delivery-release mode are reviewed. Finally, the current challenges and the prospective application of GQDs in drug delivery are discussed.
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Affiliation(s)
- Changhong Zhao
- School of Life Sciences and Technology, Xinxiang Medical University, Xinxiang, 453003, P. R. China.
- Electronics Materials and Systems Laboratory, Department of Microtechnology and Nanoscience, Chalmers University of Technology, 412 96, Gothenburg, Sweden.
| | - Xuebin Song
- School of Life Sciences and Technology, Xinxiang Medical University, Xinxiang, 453003, P. R. China
| | - Ya Liu
- Electronics Materials and Systems Laboratory, Department of Microtechnology and Nanoscience, Chalmers University of Technology, 412 96, Gothenburg, Sweden
| | - Yifeng Fu
- Electronics Materials and Systems Laboratory, Department of Microtechnology and Nanoscience, Chalmers University of Technology, 412 96, Gothenburg, Sweden
| | - Lilei Ye
- SHT Smart High-Tech AB, 411 33, Gothenburg, Sweden
| | - Nan Wang
- SHT Smart High-Tech AB, 411 33, Gothenburg, Sweden
| | - Fan Wang
- School of Life Sciences and Technology, Xinxiang Medical University, Xinxiang, 453003, P. R. China
| | - Lu Li
- School of Life Sciences and Technology, Xinxiang Medical University, Xinxiang, 453003, P. R. China
| | - Mohsen Mohammadniaei
- Department of Health Technology, Technical University of Denmark, 2800, Kongens Lyngby, Denmark
| | - Ming Zhang
- Department of Health Technology, Technical University of Denmark, 2800, Kongens Lyngby, Denmark
| | - Qiqing Zhang
- School of Life Sciences and Technology, Xinxiang Medical University, Xinxiang, 453003, P. R. China.
| | - Johan Liu
- Electronics Materials and Systems Laboratory, Department of Microtechnology and Nanoscience, Chalmers University of Technology, 412 96, Gothenburg, Sweden.
- School of Automation and Mechanical Engineering, SMIT Center, Shanghai University, No 20, Chengzhong Road, Box 808, ShanghaiShanghai, 201800, China.
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11
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Lu Y, Zhong L, Tang L, Wang H, Yang Z, Xie Q, Feng H, Jia M, Fan C. Extracellular electron transfer leading to the biological mediated production of reduced graphene oxide. Chemosphere 2020; 256:127141. [PMID: 32470738 DOI: 10.1016/j.chemosphere.2020.127141] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/03/2019] [Revised: 03/26/2020] [Accepted: 05/19/2020] [Indexed: 06/11/2023]
Abstract
To explore a green, low-cost, and efficient strategy to synthesis reduced graphene oxide (RGO), the process and mechanism of the graphene oxide (GO) reduction by a model electrochemically active bacteria (EAB), Geobacter sulfurreducens PCA, were studied. In this work, up to 1.0 mg mL-1 of GO was reduced by G. sulfurreducens within 0.5-8 days. ID/IG ratio in reduced product was similar to chemically RGO. After microbial reduction, the peak which corresponded to the reflection of graphene oxide (001) disappeared, while another peak considered as graphite spacing (002) appeared. The peak intensity of typical oxygen function groups, such as carboxyl C-O and >O (epoxide) groups, diminished in bacterially induced RGO comparing to initial GO. Besides, we observed the doping of nitrogen and phosphorus elements in bacterially induced RGO. In a good agreement with that, better electrochemical performance was noticed after GO reduction. As confirmed with differential pulse voltammetry (DPV) and cyclic voltammetry (CV) analysis, the maximum value of peak currents of bacterially induced RGO were significantly higher than those of GO. Our results showed the electron transfer at microbial cell/GO interface promoted the GO reduction, suggesting a broader application of EAB in biological mediated production of RGO.
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Affiliation(s)
- Yue Lu
- College of Environmental Science and Engineering, Hunan University, Changsha, 410082, China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, 410082, Hunan, China.
| | - Linrui Zhong
- College of Environmental Science and Engineering, Hunan University, Changsha, 410082, China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, 410082, Hunan, China
| | - Lin Tang
- College of Environmental Science and Engineering, Hunan University, Changsha, 410082, China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, 410082, Hunan, China.
| | - Huan Wang
- College of Environmental Science and Engineering, Hunan University, Changsha, 410082, China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, 410082, Hunan, China
| | - Zhaohui Yang
- College of Environmental Science and Engineering, Hunan University, Changsha, 410082, China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, 410082, Hunan, China
| | - Qingqing Xie
- College of Environmental Science and Engineering, Hunan University, Changsha, 410082, China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, 410082, Hunan, China
| | - Haopeng Feng
- College of Environmental Science and Engineering, Hunan University, Changsha, 410082, China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, 410082, Hunan, China
| | - Meiying Jia
- College of Environmental Science and Engineering, Hunan University, Changsha, 410082, China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, 410082, Hunan, China
| | - Changzheng Fan
- College of Environmental Science and Engineering, Hunan University, Changsha, 410082, China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, 410082, Hunan, China
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12
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Lu YJ, Wang YH, Sahu RS, Chen JP, Dash BS, Chung PJ, Yang HW, Chuang EY, Hwang TL. Mechanism of Nanoformulated Graphene Oxide-Mediated Human Neutrophil Activation. ACS Appl Mater Interfaces 2020; 12:40141-40152. [PMID: 32845120 DOI: 10.1021/acsami.0c12490] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Understanding the molecular mechanisms of graphene oxide (GO)-based biomaterials is important for logical biomedical applications. Previous studies have revealed biointeractions between GO and immune effector cells, but the effects on neutrophils, crucial cells in the immune system, have not been thoroughly discussed. In this study, GO nanoformulations were synthesized with different functional groups, including GO, GO-carboxylated (GO-COOH), and PEGylated GO (GO-PEG), with different surface features, which were elucidated using imaging methods and surface-sensitive quantitative spectroscopic techniques, including atomic force microscopy (AFM), transmission electron microscopy (TEM), and X-ray photoemission spectroscopy (XPS). The GO-based nanoformulations elicited reactive oxygen species (ROS) generation and neutrophil extracellular trap (NET) formation in human neutrophils. Nanoformulated GO stimulates NET development via the formation of ROS. An endocytosis study revealed that nanoformulated GO facilitated internalization by neutrophils via macropinocytosis and actin-dependent phagocytosis. Importantly, calcium mobilization and phosphorylation proteins such as mitogen-activated protein kinases (extracellular signal-regulated kinase, c-Jun N-terminal kinase, and p38) and AKT were involved in the activation of neutrophils. These findings offer the first verification that nanoformulated GO exhibits direct effects on human neutrophils.
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Affiliation(s)
- Yu-Jen Lu
- Department of Neurosurgery, Chang Gung Memorial Hospital, Taoyuan 333, Taiwan
| | - Yi-Hsuan Wang
- Graduate Institute of Natural Products, Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung University, Taoyuan 333, Taiwan
| | - Rama Shanker Sahu
- Department of Agricultural Chemistry, National Taiwan University, Taipei 106, Taiwan
| | - Jyh-Ping Chen
- Department of Chemical and Materials Engineering, Chang Gung University, Taoyuan 33302, Taiwan
| | - Banendu Sunder Dash
- Department of Chemical and Materials Engineering, Chang Gung University, Taoyuan 33302, Taiwan
| | - Pei-Jen Chung
- Graduate Institute of Natural Products, Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung University, Taoyuan 333, Taiwan
| | - Hung-Wei Yang
- Institute of Medical Science and Technology, National Sun Yat-Sen University, Kaohsiung 804, Taiwan
| | - Er-Yuan Chuang
- Graduate Institute of Biomedical Materials and Tissue Engineering, College of Biomedical Engineering, International Ph.D. Program of Biomedical Engineering, Taipei Medical University, Taipei 110, Taiwan
- Cell Physiology and Molecular Image Research Center, Taipei Medical University-Wan Fang Hospital, Taipei 116, Taiwan
| | - Tsong-Long Hwang
- Graduate Institute of Natural Products, Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung University, Taoyuan 333, Taiwan
- Research Center for Chinese Herbal Medicine, Research Center for Food and Cosmetic Safety, Graduate Institute of Health Industry Technology, Chang Gung University of Science and Technology, Taoyuan 333, Taiwan
- Department of Anesthesiology, Chang Gung Memorial Hospital, Taoyuan 33302, Taiwan
- Department of Chemical Engineering, Ming-Chi University of Technology, New Taipei City 243, Taiwan
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13
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Kumar V, Abro MI, Bhutto MA, Aftab U, Kumar M, Ahmed M. Fabrication and characterization of graphene oxide nanoparticles incorporated in poly (vinyl alcohol) electro-spun nanofibers and its vapor-phase crosslinking. Pak J Pharm Sci 2020; 33:2089-2096. [PMID: 33824117] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Electrospun nanofibrous membranes have gained great focused in medical research due to its simplicity, diversity and biodegradability. The challenge to researchers is to make more effective and sustainable by incorporating pristine materials to address adverse health issues of society. In this work, considering the unique characteristics of Graphene and its derivatives, well-dispersed Graphene Oxide (GO) were prepared using Modified Hummer's method. Further, the mixture of solutions, Poly (Vinyl Alcohol) PVA with synthesized GO nano-particles, was successively fabricated into nanofibrous membranes by electrospinning technique. Further, the electrospun membranes were cross-linked through vapours of Glutaraldehyde (GA) in controlled environment to make membranes hydrophobic in nature. In addition, the characterization of synthesized GO and electrospun nanofibers were done using SEM, XRD and FTIR. The results show that GO incorporation decreases the average diameter of nanofibers from 422±133nm to 274.1±93.23nm, whereas crosslinking of nanofibers at various hours (12 to 48h) tends to increase the average diameter from 368.4±130.1nm to 671.41±293nm. In addition to that the 12h crosslinked nanofibers membrane shows better antibacterial activity than without crosslinked PVA/GO membrane against E. coli after 24h of incubation. This primarily work provides a basis for further studies of this novel nanofibrous material.
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Affiliation(s)
- Vinod Kumar
- Department of Metallurgy and Materials Engineering, Mehran University of Engineering and Technology, Jamshoro, Pakistan
| | - Muhammad Ishaque Abro
- Department of Metallurgy and Materials Engineering, Mehran University of Engineering and Technology, Jamshoro, Pakistan
| | - Muhammad Aqeel Bhutto
- Institute of Biotechnology and Genetics Engineering, University of Sindh, Jamshoro, Pakistan
| | - Umair Aftab
- Department of Metallurgy and Materials Engineering, Mehran University of Engineering and Technology, Jamshoro, Pakistan
| | - Mukesh Kumar
- Department of Metallurgy and Materials Engineering, Mehran University of Engineering and Technology, Jamshoro, Pakistan
| | - Muzafar Ahmed
- Department of Materials Engineering, NED University of Engineering and Technology, Karachi, Pakistan
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14
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Alam K, Jo YY, Park CK, Cho H. Synthesis of Graphene Oxide Using Atmospheric Plasma for Prospective Biological Applications. Int J Nanomedicine 2020; 15:5813-5824. [PMID: 32821103 PMCID: PMC7418166 DOI: 10.2147/ijn.s254860] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2020] [Accepted: 06/09/2020] [Indexed: 12/13/2022] Open
Abstract
INTRODUCTION This paper presents a novel technique for the synthesis of graphene oxide (GO) with various surface features using high-density atmospheric plasma deposition. Furthermore, to investigate the use of hydrophobic, super-hydrophobic, and hydrophilic graphene in biological applications, we synthesized hydrophobic, super-hydrophobic, and hydrophilic graphene oxides by additional heat treatment and argon plasma treatment, respectively. In contrast to conventional fabrication procedures, reduced graphene oxide (rGO) formed under low pressure and high-temperature environment using a new synthesis method-developed and described in this study-offers a convenient deposition method on any kind surface with controlled wettability. METHODS High density at atmospheric plasma is used for the synthesis of rGO and GO and its biocompatibility based on various wetting properties was evaluated using MTT (3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide) assay, and the viability of cells in response to rGO and GO with various surface features was investigated. Structural integrity was characterized by Raman spectroscopy, FESEM and FE-TEM. Wettability was measured via contact angle method and confirmed with XPS analysis. RESULTS We found that GO coating with a hydrophilic feature is more biocompatible than other surfaces as observed in case of fibroblast cells. We have shown that wettability-controlled by GO deposition-influences biocompatibilities and antibacterial effect of biomaterial surfaces. DISCUSSION Measuring the contact angle, it is found that contact angle for hydrophobic is increased to 150.590 and reduced to 11.580 by heat and argon plasma treatment, respectively, from 75.880 that was initially in the case of hydrophobic surface. XPS analysis confirmed various oxygen-containing functional groups transforming as deposited hydrophobic surface into superhydrophobic and hydrophilic surface. Thus, we have proposed a new, direct, cost-effective, and highly productive method for the synthesis of rGO and GO-with various surface properties-for biological applications. Similarly, for the dental implant application, the Streptococcus mutans was used as an antibacterial effect and found that S. mutans grows slowly on hydrophilic surface. Thus, antibacterial effect was prominent on GO with hydrophilic surface.
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Affiliation(s)
- Khurshed Alam
- School of Materials Science & Engineering, Chonnam National University, Gwangju61186, Republic of Korea
| | - Youn Yi Jo
- Department of Anesthesiology and Pain Medicine, Gachon University, Gil Medical Center, Incheon21565, Republic of Korea
| | - Chul-Kyu Park
- Gachon Pain Center and Department of Physiology, College of Medicine, Gachon University, Incheon21999, Republic of Korea
| | - Hoonsung Cho
- School of Materials Science & Engineering, Chonnam National University, Gwangju61186, Republic of Korea
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15
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Rebekah A, Bharath G, Naushad M, Viswanathan C, Ponpandian N. Magnetic graphene/chitosan nanocomposite: A promising nano-adsorbent for the removal of 2-naphthol from aqueous solution and their kinetic studies. Int J Biol Macromol 2020; 159:530-538. [PMID: 32442573 DOI: 10.1016/j.ijbiomac.2020.05.113] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2020] [Revised: 05/01/2020] [Accepted: 05/15/2020] [Indexed: 01/01/2023]
Abstract
In this study, magnetic/graphene/chitosan nanocomposite (MGCH) is prepared through facile solvothermal process and employed as an adsorbent for the removal of 2-naphthol from aqueous solution. The physico-chemical characteristic results of FESEM, Raman, FTIR, XRD and VSM confirms that the MGCH nanocomposite is effectively prepared. The FESEM and EDS analysis reveals that the high density of spherical-like Fe3O4 nanoparticles and chitosan are successfully assembled on the surfaces of the graphene sheets. VSM result of MGCH composite exhibited higher saturation magnetization of 46.5 emu g-1 and lower coercivity (Hc) of 50 Oe. This result discloses that MGCH possesses enough response required for the separation from aqueous solution. The batch mode adsorption studies demonstrates that MGCH based adsorbent showed almost 99.8% adsorption of 2-naphthol with a maximum adsorption capacity of 169.49 mg g-1 at pH 2. Moreover, the kinetic studies of the samples are performed by fitting adsorption models to ensure the nature of the adsorption system. This work proves that MGCH nanocomposite can be used as high-performance adsorbent for removing of phenolic pollutants from contaminated wastewater.
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Affiliation(s)
- A Rebekah
- Department of Nanoscience and Technology, Bharathiar University, Coimbatore 641046, India
| | - G Bharath
- Department of Chemical Engineering, Khalifa University of Science and Technology, P.O. Box 127788, Abu Dhabi, United Arab Emirates
| | - Mu Naushad
- Department of Chemistry, College of Science, Building #5, King Saud University, Riyadh 11451, Saudi Arabia
| | - C Viswanathan
- Department of Nanoscience and Technology, Bharathiar University, Coimbatore 641046, India
| | - N Ponpandian
- Department of Nanoscience and Technology, Bharathiar University, Coimbatore 641046, India.
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Gao T, Wang X, Zhao J, Jiang P, Jiang FL, Liu Y. Bridge between Temperature and Light: Bottom-Up Synthetic Route to Structure-Defined Graphene Quantum Dots as a Temperature Probe In Vitro and in Cells. ACS Appl Mater Interfaces 2020; 12:22002-22011. [PMID: 32329995 DOI: 10.1021/acsami.0c02500] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Owing to their unique superiorities in chemical and photoluminescence (PL) stability, low toxicity, biocompatibility, and easy functionalization, graphene quantum dots (GQDs) are widely used in cell imaging, probes, and sensors. However, further development and deeper research of GQDs are restricted by their imprecise and complex structure and accompanying controversial PL mechanism. In this work, two kinds of structure-defined water-soluble GQDs, with different oxidation degrees, are synthesized from molecules using bottom-up syntheses methods. After being studied by a series of characterizations, their optical properties, functional groups, molecular weight, and structural information were obtained. The optical properties of GQDs could be optimized by controlling their oxidation degree. The PL mechanism of GQDs was investigated by comparing their structure and properties. Furthermore, robust, stable, and precise temperature probes were designed using the GQDs, which exhibited an excellent wide response range, covering the whole physiology temperature range, from 0 to 60 °C in water. Moreover, the GQDs were successfully applied as temperature-responsive fluorescence probes in the HeLa cell line. These works laid a solid foundation for further applications of GQDs as biological thermoprobes and selectively temperature detectors in vitro cellular and in vivo.
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Affiliation(s)
- Tian Gao
- Hubei Province Key Laboratory for Coal Conversion and New Carbon Materials, School of Chemistry and Chemical Engineering, Wuhan University of Science and Technology, Wuhan 430081, P. R. China
- Department of Chemistry, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, P. R. China
| | - Xi Wang
- Department of Chemistry, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, P. R. China
| | - Jie Zhao
- Department of Chemistry, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, P. R. China
| | - Peng Jiang
- Department of Chemistry, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, P. R. China
| | - Feng-Lei Jiang
- Department of Chemistry, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, P. R. China
| | - Yi Liu
- Hubei Province Key Laboratory for Coal Conversion and New Carbon Materials, School of Chemistry and Chemical Engineering, Wuhan University of Science and Technology, Wuhan 430081, P. R. China
- Department of Chemistry, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, P. R. China
- Guangxi Key Laboratory of Natural Polymer Chemistry, College of Chemistry and Material Science, Nanning Normal University, Nanning 530001, P. R. China
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Balapure A, Nikhariya Y, Sriteja Boppudi NS, Ganesan R, Ray Dutta J. Highly Dispersed Nanocomposite of AgBr in g-C 3N 4 Matrix Exhibiting Efficient Antibacterial Effect on Drought-Resistant Pseudomonas putida under Dark and Light Conditions. ACS Appl Mater Interfaces 2020; 12:21481-21493. [PMID: 32324381 DOI: 10.1021/acsami.0c05158] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Synthesis of nanocomposites possessing intimately mixed components is highly challenging to bring out the best possible properties of the materials. The challenge is mainly due to the difficulties associated with controlling the phase segregation of individual components as a result of high interfacial tension between them and cohesive forces within each component during the synthesis. Here, we show a single-step synthesis of representative nanocomposites of g-C3N4/AgBr through a rationally designed approach, wherein melamine, the precursor of g-C3N4, has been intimately mixed with the AgBr precursor, silver-tetraoctylammonium bromide. Subsequent calcination of the obtained solid at 500 °C has resulted in the formation of highly dispersed g-C3N4/AgBr. The key to such a high dispersion lies in the surfactant-based AgBr precursor that minimized the interfacial tension during the process. The AgBr content has been varied between 2 and 20 wt % with respect to the g-C3N4 content. The obtained nanocomposites have been thoroughly characterized using XRD, XPS, ED-XRF, FE-SEM, HR-TEM, DRS, TCSPC, and BET surface area techniques. The studies revealed a high dispersion of AgBr in the g-C3N4 matrix. The nanocomposites have been found to exhibit remarkable antimicrobial properties over a drought-resistant bacterial strain of Pseudomonas putida under both dark and light conditions compared with similar compositions obtained through other methods reported so far. The present study offers a new approach for synthesizing highly dispersed and efficient nanocomposites.
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Affiliation(s)
- Aniket Balapure
- Department of Chemistry, Birla Institute of Technology and Science (BITS), Pilani Hyderabad Campus, Jawahar Nagar, Kapra Mandal, Medchal District, Hyderabad, Telangana - 500078, India
| | - Yamini Nikhariya
- Department of Biological Sciences, Birla Institute of Technology and Science (BITS), Pilani Hyderabad Campus, Jawahar Nagar, Kapra Mandal, Medchal District, Hyderabad, Telangana - 500078, India
| | - Naga Sai Sriteja Boppudi
- Department of Biological Sciences, Birla Institute of Technology and Science (BITS), Pilani Hyderabad Campus, Jawahar Nagar, Kapra Mandal, Medchal District, Hyderabad, Telangana - 500078, India
| | - Ramakrishnan Ganesan
- Department of Chemistry, Birla Institute of Technology and Science (BITS), Pilani Hyderabad Campus, Jawahar Nagar, Kapra Mandal, Medchal District, Hyderabad, Telangana - 500078, India
| | - Jayati Ray Dutta
- Department of Biological Sciences, Birla Institute of Technology and Science (BITS), Pilani Hyderabad Campus, Jawahar Nagar, Kapra Mandal, Medchal District, Hyderabad, Telangana - 500078, India
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Bitounis D, Parviz D, Cao X, Amadei CA, Vecitis CD, Sunderland EM, Thrall BD, Fang M, Strano MS, Demokritou P. Synthesis and Physicochemical Transformations of Size-Sorted Graphene Oxide during Simulated Digestion and Its Toxicological Assessment against an In Vitro Model of the Human Intestinal Epithelium. Small 2020; 16:e1907640. [PMID: 32196921 PMCID: PMC7260083 DOI: 10.1002/smll.201907640] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/29/2019] [Revised: 02/20/2020] [Accepted: 02/24/2020] [Indexed: 05/05/2023]
Abstract
In the last decade, along with the increasing use of graphene oxide (GO) in various applications, there is also considerable interest in understanding its effects on human health. Only a few experimental approaches can simulate common routes of exposure, such as ingestion, due to the inherent complexity of the digestive tract. This study presents the synthesis of size-sorted GO of sub-micrometer- or micrometer-sized lateral dimensions, its physicochemical transformations across mouth, gastric, and small intestinal simulated digestions, and its toxicological assessment against a physiologically relevant, in vitro cellular model of the human intestinal epithelium. Results from real-time characterization of the simulated digestas of the gastrointestinal tract using multi-angle laser diffraction and field-emission scanning electron microscopy show that GO agglomerates in the gastric and small intestinal phase. Extensive morphological changes, such as folding, are also observed on GO following simulated digestion. Furthermore, X-ray photoelectron spectroscopy reveals that GO presents covalently bound N-containing groups on its surface. It is shown that the GO employed in this study undergoes reduction. Toxicological assessment of the GO small intestinal digesta over 24 h does not point to acute cytotoxicity, and examination of the intestinal epithelium under electron microscopy does not reveal histological alterations. Both sub-micrometer- and micrometer-sized GO variants elicit a 20% statistically significant increase in reactive oxygen species generation compared to the untreated control after a 6 h exposure.
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Affiliation(s)
- Dimitrios Bitounis
- Center for Nanotechnology and Nanotoxicology, Department of Environmental Health, T.H. Chan School of Public Health, Harvard University, 655 Huntington Ave Boston, MA 02115, USA
| | - Dorsa Parviz
- Department of Chemical Engineering, Massachusetts Institute of Technology, 77 Massachusetts Avenue 66-570b Cambridge, MA 02139, USA
| | - Xiaoqiong Cao
- Center for Nanotechnology and Nanotoxicology, Department of Environmental Health, T.H. Chan School of Public Health, Harvard University, 655 Huntington Ave Boston, MA 02115, USA
| | - Carlo A. Amadei
- John A. Paulson School of Engineering and Applied Sciences, Harvard University, 29 Oxford St Cambridge, MA 02138, USA
| | - Chad D. Vecitis
- John A. Paulson School of Engineering and Applied Sciences, Harvard University, 29 Oxford St Cambridge, MA 02138, USA
| | - Elsie M. Sunderland
- John A. Paulson School of Engineering and Applied Sciences, Harvard University, 29 Oxford St Cambridge, MA 02138, USA
| | - Brian D. Thrall
- Biological Sciences Division, Pacific Northwest National Laboratory, Richland, WA, USA
| | - Mingliang Fang
- School of Civil and Environmental Engineering, Nanyang Technological University, 639798, Singapore
| | - Michael S. Strano
- Department of Chemical Engineering, Massachusetts Institute of Technology, 77 Massachusetts Avenue 66-570b Cambridge, MA 02139, USA
| | - Philip Demokritou
- Center for Nanotechnology and Nanotoxicology, Department of Environmental Health, T.H. Chan School of Public Health, Harvard University, 655 Huntington Ave Boston, MA 02115, USA
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19
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Sun B, Wang Y, Li D, Li W, Gou X, Gou Y, Hu F. Development of a sensitive electrochemical immunosensor using polyaniline functionalized graphene quantum dots for detecting a depression marker. Mater Sci Eng C Mater Biol Appl 2020; 111:110797. [PMID: 32279828 DOI: 10.1016/j.msec.2020.110797] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/30/2018] [Revised: 09/04/2019] [Accepted: 02/29/2020] [Indexed: 12/15/2022]
Abstract
As a new type of conductive material, polyaniline functionalized graphene quantum dots (PAGD), which were prepared by in-situ polymerization had been used to construct a novel electrochemical immunosensor for early screening of depression markers-heat shock protein 70 (HSP70). Profiting from the huge specific surface area, good bioactivity and excellent structure of PAGD, a variety of heat shock protein 70 (HSP70) was firmly loaded on the surface of PAGD for successful construction of basic electrode (HSP70/PAGD/GCE), which was characterized by cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS), respectively. Due to the HSP70 fixed on the surface of basic electrode and the HSP70 in the samples can competitively combine with the horseradish peroxidase labeled human HSP70 antibody (HRP-Strept-Biotin-Ab). As a result, there is negative correlation between the concentration of HSP70 in samples and the detection signal of the proposed electrochemical immunosensor (HRP-Strept-Biotin-Ab-HSP70/PAGD/GCE) in the test liquid. Under conditions optimized for determining HSP70, wide linearity was obtained in the range of 0.0976-100 ng/mL, with a low detection limit of 0.05 ng/mL at 3σ. Moreover, the proposed electrochemical immunosensors was successfully applied to detect HSP70 in plasma samples, and exhibited good precision, acceptable stability and reproducibility. Therefore, this study provides a novel and convenient method for early clinical screening of depression markers, and also provides a reliable and objective analysis method for the diagnosis of depression at the molecular level.
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Affiliation(s)
- Bolu Sun
- School of Pharmacy, Lanzhou University, Lanzhou 730000, China
| | - Yanping Wang
- School of Pharmacy, Lanzhou University, Lanzhou 730000, China
| | - Dai Li
- School of Pharmacy, Lanzhou University, Lanzhou 730000, China
| | - Wuyan Li
- Center for Inflammation, Translational and Clinical Lung Research, Temple University School of Medicine, Philadelphia, PA, USA
| | - Xiaodan Gou
- School of Chemistry and Chemical Engineering, Nanjing University, 210046, China
| | - Yuqiang Gou
- Center for Disease Prevention and Control in Northwest Theater of the Chinese People's Liberation Army, Lanzhou 730000, China
| | - Fangdi Hu
- School of Pharmacy, Lanzhou University, Lanzhou 730000, China.
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20
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Ghadiri SK, Alidadi H, Tavakkoli Nezhad N, Javid A, Roudbari A, Talebi SS, Mohammadi AA, Shams M, Rezania S. Valorization of biomass into amine- functionalized bio graphene for efficient ciprofloxacin adsorption in water-modeling and optimization study. PLoS One 2020; 15:e0231045. [PMID: 32287274 PMCID: PMC7156080 DOI: 10.1371/journal.pone.0231045] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2020] [Accepted: 03/13/2020] [Indexed: 12/07/2022] Open
Abstract
A green synthesis approach was conducted to prepare amine-functionalized bio-graphene (AFBG) as an efficient and low cost adsorbent that can be obtained from agricultural wastes. In this study, bio-graphene was successfully used to remove Ciprofloxacin (CIP) from synthetic solutions. The efficacy of adsorbent as a function of operating variables (i.e. pH, time, AFBG dose and CIP concentration) was described by a polynomial model. A optimal99.3% experimental removal was achieved by adjusting the mixing time, AFBG dose, pH and CIP concentration to 58.16, 0.99, 7.47, and 52.9, respectively. Kinetic model revealed that CIP diffusion into the internal layers of AFBG controls the rate of the process. Furthermore, the sorption process was in monolayer with a maximum monolayer capacity of 172.6 mg/g. Adsorption also found to be favored under higher CIP concentrations. The thermodynamic parameters (ΔG°<0, ΔH°>0, and ΔS°>0) demonstrated that the process is endothermic and spontaneous in nature. The regeneration study showed that the AFBG could simply regenerated without significant lost in adsorption capacity.
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Affiliation(s)
- Seid Kamal Ghadiri
- Department of Environmental Health Engineering, School of Public Health, Shahroud University of Medical Sciences, Shahroud, Iran
| | - Hossein Alidadi
- Social Determinants of Health Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Nahid Tavakkoli Nezhad
- Department of Environmental Health Engineering, Student Research Committee, School of Health, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Allahbakhsh Javid
- Department of Environmental Health Engineering, School of Public Health, Shahroud University of Medical Sciences, Shahroud, Iran
| | - Aliakbar Roudbari
- Department of Environmental Health Engineering, School of Public Health, Shahroud University of Medical Sciences, Shahroud, Iran
| | - Seyedeh Solmaz Talebi
- Department of Epidemiology, School of Medicine, Shahroud University of Medical Sciences, Shahroud, Iran
| | - Ali Akbar Mohammadi
- Department of Environmental Health Engineering, Neyshabur University of Medical Sciences, Neyshabur, Iran
- * E-mail: (AAM); (MS); (SR)
| | - Mahmoud Shams
- Social Determinants of Health Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
- * E-mail: (AAM); (MS); (SR)
| | - Shahabaldin Rezania
- Department of Environment & Energy, Sejong University, Seoul, South Korea
- * E-mail: (AAM); (MS); (SR)
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21
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Chalmpes N, Spyrou K, Bourlinos AB, Moschovas D, Avgeropoulos A, Karakassides MA, Gournis D. Synthesis of Highly Crystalline Graphite from Spontaneous Ignition of In Situ Derived Acetylene and Chlorine at Ambient Conditions. Molecules 2020; 25:E297. [PMID: 31940837 PMCID: PMC7024288 DOI: 10.3390/molecules25020297] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2019] [Revised: 01/07/2020] [Accepted: 01/09/2020] [Indexed: 11/17/2022] Open
Abstract
We exploited a classic chemistry demonstration experiment based on the reaction of acetylene with chlorine to obtain highly crystalline graphite at ambient conditions. Acetylene and chlorine were generated in-situ by the addition of calcium carbide (CaC2) in a concentrated HCl solution, followed by the quick addition of domestic bleach (NaClO). The released gases reacted spontaneously, giving bursts of yellow flame, leaving highly crystalline graphite deposits in the aqueous phase. This was a rather benign alternative towards synthetic graphite, the latter usually being prepared at high temperatures. The synthetic graphite was further utilized to obtain graphene or conductive inks.
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Affiliation(s)
- Nikolaos Chalmpes
- Department of Materials Science & Engineering, University of Ioannina, 45110 Ioannina, Greece; (N.C.); (K.S.); (D.M.); (A.A.); (M.A.K.)
| | - Konstantinos Spyrou
- Department of Materials Science & Engineering, University of Ioannina, 45110 Ioannina, Greece; (N.C.); (K.S.); (D.M.); (A.A.); (M.A.K.)
| | | | - Dimitrios Moschovas
- Department of Materials Science & Engineering, University of Ioannina, 45110 Ioannina, Greece; (N.C.); (K.S.); (D.M.); (A.A.); (M.A.K.)
| | - Apostolos Avgeropoulos
- Department of Materials Science & Engineering, University of Ioannina, 45110 Ioannina, Greece; (N.C.); (K.S.); (D.M.); (A.A.); (M.A.K.)
| | - Michael A. Karakassides
- Department of Materials Science & Engineering, University of Ioannina, 45110 Ioannina, Greece; (N.C.); (K.S.); (D.M.); (A.A.); (M.A.K.)
| | - Dimitrios Gournis
- Department of Materials Science & Engineering, University of Ioannina, 45110 Ioannina, Greece; (N.C.); (K.S.); (D.M.); (A.A.); (M.A.K.)
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22
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Aziz A, Twyman LJ. Synthesis of Oligomeric and Monomeric Functionalized Graphene Oxides and a Comparison of Their Abilities to Perform as Protein Ligands and Enzyme Inhibitors. ACS Appl Mater Interfaces 2019; 11:44941-44948. [PMID: 31697476 PMCID: PMC7007006 DOI: 10.1021/acsami.9b12980] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/23/2019] [Accepted: 11/07/2019] [Indexed: 06/10/2023]
Abstract
Graphene oxide (GO) is a versatile, monomolecular layered nanomaterial that possesses various oxygen-containing functionality on its large surface. These characteristics allow GO to interact with a variety of materials and to be applied towards a number of areas. The strength and selectivity of these interactions can be improved significantly through further functionalization. In this paper, we describe the functionalization of GO and its application as a protein ligand and an enzyme inhibitor. The work reported in this paper details how chymotrypsin inhibition can be improved using GO functionalized with a monomeric and oligomer layer of tyrosine. The results indicated that the mono- and oligo-functionalized systems performed extremely well, with Ki values nearly four times better than GO alone. Our original premise was that the oligomeric system would bind better because of the length of the oligomeric arms and potential for a high degree of flexibility. However, the results clearly showed that the shorter monomeric system was the better ligand/inhibitor. This was due to weaker intramolecular interactions between the aromatic side chains of tyrosine and the aromatic surface of GO. Although these are possible for both systems, they are cooperative and therefore stronger for the oligomeric functionalized GO. As such, the protein must compete and overcome these cooperative intramolecular interactions before it can bind to the functionalized GO, whereas the tyrosines on the surface of the monomeric system interact with the surface of GO through a significantly weaker monovalent interaction, but interact cooperatively with the protein surface.
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Affiliation(s)
- Azrah
Abdul Aziz
- Department of Chemistry, University
of Sheffield, Sheffield S3 7HF, United Kingdom
| | - Lance J. Twyman
- Department of Chemistry, University
of Sheffield, Sheffield S3 7HF, United Kingdom
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23
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Zhu W, Gao J, Song H, Lin X, Zhang S. Nature of the Synergistic Effect of N and S Co-Doped Graphene for the Enhanced Simultaneous Determination of Toxic Pollutants. ACS Appl Mater Interfaces 2019; 11:44545-44555. [PMID: 31675208 DOI: 10.1021/acsami.9b13211] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
N-doped graphene (NG), S-doped graphene (SG), and N and S co-doped graphene nanocatalysts with different doping sequences (N-SG and S-NG) are successfully synthesized by a facile low-temperature hydrothermal method. By changing the synthetic sequence, S-NG significantly increases the electron transport rate of the sensor and the electrocatalytic ability compared to NG, SG, and N-SG due to the optimal proportion of doping element content and suitable N- and S-bonding configurations. The origin of the synergistic effect of N and S co-doped graphene is confirmed. Traces of S doping greatly enhance the electrochemical performance. The large volume of S-Ox groups may prevent the analytes from approaching the catalytic sites of the sensing materials due to a steric hindrance effect. S-NG, which possesses less S-Ox groups, exhibits better performance than N-SG. Pyridinic N plays an important role in enhancing the electrochemical activity and conductivity. The simultaneous determination of aniline (AN), p-phenylenediamine (PPD), and nitrobenzene (NB) as typical toxic pollutants is performed by employing the S-NG nanoarchitecture. The detection limits (S/N = 3) for AN, PPD, and NB are 0.023, 0.051, and 0.216 μM, respectively. In addition, the S-NG sensors also have excellent anti-interference, stability, and reproducibility. The precise control and synthesis of multiheteroatoms into graphene represent a promising strategy to enhance the electrocatalytic performance in energy and environmental fields.
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Affiliation(s)
- Weiqing Zhu
- School of Chemical Engineering , Nanjing University of Science and Technology , Nanjing 210094 , P. R. China
| | - Juanjuan Gao
- School of Chemical Engineering , Nanjing University of Science and Technology , Nanjing 210094 , P. R. China
| | - Haiou Song
- School of Environment , Nanjing Normal University , Nanjing 210097 , P. R. China
| | - Xuezhen Lin
- School of Chemical Engineering , Nanjing University of Science and Technology , Nanjing 210094 , P. R. China
| | - Shupeng Zhang
- School of Chemical Engineering , Nanjing University of Science and Technology , Nanjing 210094 , P. R. China
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24
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Qiao Y, Li X, Hirtz T, Deng G, Wei Y, Li M, Ji S, Wu Q, Jian J, Wu F, Shen Y, Tian H, Yang Y, Ren TL. Graphene-based wearable sensors. Nanoscale 2019; 11:18923-18945. [PMID: 31532436 DOI: 10.1039/c9nr05532k] [Citation(s) in RCA: 44] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
The human body is a "delicate machine" full of sensors such as the fingers, nose, and mouth. In addition, numerous physiological signals are being created every moment, which can reflect the condition of the body. The quality and the quantity of the physiological signals are important for diagnoses and the execution of therapies. Due to the incompact interface between the sensors and the skin, the signals obtained by commercial rigid sensors do not bond well with the body; this decreases the quality of the signal. To increase the quantity of the data, it is important to detect physiological signals in real time during daily life. In recent years, there has been an obvious trend of applying graphene devices with excellent performance (flexibility, biocompatibility, and electronic characters) in wearable systems. In this review, we will first provide an introduction about the different methods of synthesis of graphene, and then techniques for graphene patterning will be outlined. Moreover, wearable graphene sensors to detect mechanical, electrophysiological, fluid, and gas signals will be introduced. Finally, the challenges and prospects of wearable graphene devices will be discussed. Wearable graphene sensors can improve the quality and quantity of the physiological signals and have great potential for health-care and telemedicine in the future.
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Affiliation(s)
- Yancong Qiao
- Institute of Microelectronics and Beijing National Research Center for Information Science and Technology (BNRist), Tsinghua University, Beijing 100084, China.
| | - Xiaoshi Li
- Institute of Microelectronics and Beijing National Research Center for Information Science and Technology (BNRist), Tsinghua University, Beijing 100084, China.
| | - Thomas Hirtz
- Institute of Microelectronics and Beijing National Research Center for Information Science and Technology (BNRist), Tsinghua University, Beijing 100084, China.
| | - Ge Deng
- Institute of Microelectronics and Beijing National Research Center for Information Science and Technology (BNRist), Tsinghua University, Beijing 100084, China.
| | - Yuhong Wei
- Institute of Microelectronics and Beijing National Research Center for Information Science and Technology (BNRist), Tsinghua University, Beijing 100084, China.
| | - Mingrui Li
- Institute of Microelectronics and Beijing National Research Center for Information Science and Technology (BNRist), Tsinghua University, Beijing 100084, China.
| | - Shourui Ji
- Institute of Microelectronics and Beijing National Research Center for Information Science and Technology (BNRist), Tsinghua University, Beijing 100084, China. and School of Aerospace Engineering, Tsinghua University, Beijing 100084, China
| | - Qi Wu
- Institute of Microelectronics and Beijing National Research Center for Information Science and Technology (BNRist), Tsinghua University, Beijing 100084, China.
| | - Jinming Jian
- Institute of Microelectronics and Beijing National Research Center for Information Science and Technology (BNRist), Tsinghua University, Beijing 100084, China.
| | - Fan Wu
- Institute of Microelectronics and Beijing National Research Center for Information Science and Technology (BNRist), Tsinghua University, Beijing 100084, China.
| | - Yang Shen
- Institute of Microelectronics and Beijing National Research Center for Information Science and Technology (BNRist), Tsinghua University, Beijing 100084, China.
| | - He Tian
- Institute of Microelectronics and Beijing National Research Center for Information Science and Technology (BNRist), Tsinghua University, Beijing 100084, China.
| | - Yi Yang
- Institute of Microelectronics and Beijing National Research Center for Information Science and Technology (BNRist), Tsinghua University, Beijing 100084, China.
| | - Tian-Ling Ren
- Institute of Microelectronics and Beijing National Research Center for Information Science and Technology (BNRist), Tsinghua University, Beijing 100084, China.
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25
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do Nascimento GFO, da Costa GRB, de Araújo CMB, Ghislandi MG, da Motta Sobrinho MA. Graphene-based materials production and application in textile wastewater treatment: color removal and phytotoxicity using Lactuca sativa as bioindicator. J Environ Sci Health A Tox Hazard Subst Environ Eng 2019; 55:97-106. [PMID: 31533527 DOI: 10.1080/10934529.2019.1665951] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/03/2019] [Revised: 08/13/2019] [Accepted: 08/16/2019] [Indexed: 06/10/2023]
Abstract
The dyes used in textile industries are usually difficult to degrade in aquatic environments, being highly toxic to micro fauna and flora. Thus, textile wastewater treatments have been developed, among them, one that stands out is adsorption process. With the rise of nanomaterials applied to adsorption, graphene oxide (GO) shows promise in the removal of dyes. This work aimed to produce a more economical and environmentally friendly GO by reducing H2SO4 concentration during the synthesis. Adsorption tests were performed with methylene blue (MB) and brilliant blue (BB), adsorbent regeneration tests, as well as a kinetic study using real wastewater, and toxicological assays with lettuce seeds. Results showed that the sample produced with less H2SO4 (GO-21) performed better for MB (99% removal) and BB (29% removal); and recycling test showed that despite the decrease in removal efficiency, it remained high in the first cycles. Kinetics showed that equilibrium was reached in 30 min, removing 67.43% of color and 90.23% of the effluent's turbidity. Phytotoxicity assays indicated that the wastewater treated with GO-21 was the least toxic, compared to other wastewater samples analyzed. Therefore, GO has demonstrated its potential to be an effective and less toxic option to treat textile effluents.[Formula: see text].
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Affiliation(s)
| | | | | | - Marcos Gomes Ghislandi
- Engineering Campus (UACSA), Universidade Federal Rural de Pernambuco (UFRPE), Cabo de St. Agostinho, Brazil
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26
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Jagiełło J, Sekuła-Stryjewska M, Noga S, Adamczyk E, Dźwigońska M, Kurcz M, Kurp K, Winkowska-Struzik M, Karnas E, Boruczkowski D, Madeja Z, Lipińska L, Zuba-Surma EK. Impact of Graphene-Based Surfaces on the Basic Biological Properties of Human Umbilical Cord Mesenchymal Stem Cells: Implications for Ex Vivo Cell Expansion Aimed at Tissue Repair. Int J Mol Sci 2019; 20:E4561. [PMID: 31540083 PMCID: PMC6770664 DOI: 10.3390/ijms20184561] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2019] [Revised: 09/10/2019] [Accepted: 09/12/2019] [Indexed: 01/20/2023] Open
Abstract
The potential therapeutic applications of mesenchymal stem/stromal cells (MSCs) and biomaterials have attracted a great amount of interest in the field of biomedical engineering. MSCs are multipotent adult stem cells characterized as cells with specific features, e.g., high differentiation potential, low immunogenicity, immunomodulatory properties, and efficient in vitro expansion ability. Human umbilical cord Wharton's jelly-derived MSCs (hUC-MSCs) are a new, important cell type that may be used for therapeutic purposes, i.e., for autologous and allogeneic transplantations. To improve the therapeutic efficiency of hUC-MSCs, novel biomaterials have been considered for use as scaffolds dedicated to the propagation and differentiation of these cells. Nowadays, some of the most promising materials for tissue engineering include graphene and its derivatives such as graphene oxide (GO) and reduced graphene oxide (rGO). Due to their physicochemical properties, they can be easily modified with biomolecules, which enable their interaction with different types of cells, including MSCs. In this study, we demonstrate the impact of graphene-based substrates (GO, rGO) on the biological properties of hUC-MSCs. The size of the GO flakes and the reduction level of GO have been considered as important factors determining the most favorable surface for hUC-MSCs growth. The obtained results revealed that GO and rGO are suitable scaffolds for hUC-MSCs. hUC-MSCs cultured on: (i) a thin layer of GO and (ii) an rGO surface with a low reduction level demonstrated a viability and proliferation rate comparable to those estimated under standard culture conditions. Interestingly, cell culture on a highly reduced GO substrate resulted in a decreased hUC-MSCs proliferation rate and induced cell apoptosis. Moreover, our analysis demonstrated that hUC-MSCs cultured on all the tested GO and rGO scaffolds showed no alterations of their typical mesenchymal phenotype, regardless of the reduction level and size of the GO flakes. Thus, GO scaffolds and rGO scaffolds with a low reduction level exhibit potential applicability as novel, safe, and biocompatible materials for utilization in regenerative medicine.
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Affiliation(s)
- Joanna Jagiełło
- Department of Chemical Synthesis and Flake Graphene, Łukasiewicz Research Network - Institute of Electronic Materials Technology, 01-919 Warsaw, Poland.
| | | | - Sylwia Noga
- Malopolska Centre of Biotechnology, Jagiellonian University, 30-387 Krakow, Poland.
- Department of Cell Biology, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, 30-387 Krakow, Poland.
| | - Edyta Adamczyk
- Department of Cell Biology, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, 30-387 Krakow, Poland.
| | - Monika Dźwigońska
- Department of Cell Biology, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, 30-387 Krakow, Poland.
| | - Magdalena Kurcz
- Department of Chemical Synthesis and Flake Graphene, Łukasiewicz Research Network - Institute of Electronic Materials Technology, 01-919 Warsaw, Poland.
| | - Katarzyna Kurp
- Department of Chemical Synthesis and Flake Graphene, Łukasiewicz Research Network - Institute of Electronic Materials Technology, 01-919 Warsaw, Poland.
| | - Magdalena Winkowska-Struzik
- Department of Chemical Synthesis and Flake Graphene, Łukasiewicz Research Network - Institute of Electronic Materials Technology, 01-919 Warsaw, Poland.
| | - Elżbieta Karnas
- Malopolska Centre of Biotechnology, Jagiellonian University, 30-387 Krakow, Poland.
- Department of Cell Biology, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, 30-387 Krakow, Poland.
| | | | - Zbigniew Madeja
- Department of Cell Biology, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, 30-387 Krakow, Poland.
| | - Ludwika Lipińska
- Department of Chemical Synthesis and Flake Graphene, Łukasiewicz Research Network - Institute of Electronic Materials Technology, 01-919 Warsaw, Poland.
| | - Ewa K Zuba-Surma
- Department of Cell Biology, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, 30-387 Krakow, Poland.
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Min H, Qi Y, Chen Y, Zhang Y, Han X, Xu Y, Liu Y, Hu J, Liu H, Li Y, Nie G. Synthesis and Imaging of Biocompatible Graphdiyne Quantum Dots. ACS Appl Mater Interfaces 2019; 11:32798-32807. [PMID: 31430113 DOI: 10.1021/acsami.9b12801] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Graphdiyne has attracted much interest from researchers for their potential applications in energy storage, catalysis, and biomedical areas. As one of the derivatives of graphdiyne, graphdiyne quantum dots (GDQDs) may possess superior bioactivity due to active acetylene units. However, the biological application of biocompatible GDQDs have not been reported so far. Herein, GDQDs with uniform size and good crystallization were prepared via a classical solvothermal method. The GDQDs exhibit excitation- and pH-dependent fluorescence emission as well as superior photostability, demonstrating their potential for bioimaging. The GDQDs demonstrate efficient cellular uptake and cell imaging without induction of detectable cytotoxic effects in vitro. Systematical safety evaluation further confirmed good biocompatibility of the GDQDs in vivo. Our study preliminarily validates the application of the GDQDs in biomedicine and encourages more thorough studies for better realizing the potential of GDQDs.
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Affiliation(s)
- Huan Min
- College of Science , Northeastern University , Shenyang 110819 , P. R. China
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, CAS Center for Excellence in Nanoscience , National Center for Nanoscience and Technology , Beijing 100190 , P. R. China
| | - Yingqiu Qi
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, CAS Center for Excellence in Nanoscience , National Center for Nanoscience and Technology , Beijing 100190 , P. R. China
- School of Basic Medical Sciences , Zhengzhou University , Zhengzhou , Henan 450001 , P. R. China
| | - Yanhuan Chen
- CAS Key Laboratory of Organic Solids, Beijing National Laboratory for Molecular Sciences, CAS Research/Education Center for Excellence in Molecular Sciences , Institute of Chemistry, Chinese Academy of Sciences , Beijing 100190 , P. R. China
- University of Chinese Academy of Sciences , Beijing 100049 , P. R. China
| | - Yinlong Zhang
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, CAS Center for Excellence in Nanoscience , National Center for Nanoscience and Technology , Beijing 100190 , P. R. China
- University of Chinese Academy of Sciences , Beijing 100049 , P. R. China
| | - Xuexiang Han
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, CAS Center for Excellence in Nanoscience , National Center for Nanoscience and Technology , Beijing 100190 , P. R. China
- University of Chinese Academy of Sciences , Beijing 100049 , P. R. China
| | - Ying Xu
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, CAS Center for Excellence in Nanoscience , National Center for Nanoscience and Technology , Beijing 100190 , P. R. China
- University of Chinese Academy of Sciences , Beijing 100049 , P. R. China
- Sino-Danish College, Sino-Danish Center for Education and Research , University of Chinese Academy of Sciences , Beijing 100049 , P. R. China
- Department of Pharmacy , University of Copenhagen , Universitetsparken 2 , DK-2100 Copenhagen , Denmark
| | - Ying Liu
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, CAS Center for Excellence in Nanoscience , National Center for Nanoscience and Technology , Beijing 100190 , P. R. China
- University of Chinese Academy of Sciences , Beijing 100049 , P. R. China
| | - Jianshe Hu
- College of Science , Northeastern University , Shenyang 110819 , P. R. China
| | - Hiubiao Liu
- CAS Key Laboratory of Organic Solids, Beijing National Laboratory for Molecular Sciences, CAS Research/Education Center for Excellence in Molecular Sciences , Institute of Chemistry, Chinese Academy of Sciences , Beijing 100190 , P. R. China
- University of Chinese Academy of Sciences , Beijing 100049 , P. R. China
| | - Yiye Li
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, CAS Center for Excellence in Nanoscience , National Center for Nanoscience and Technology , Beijing 100190 , P. R. China
- University of Chinese Academy of Sciences , Beijing 100049 , P. R. China
| | - Guangjun Nie
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, CAS Center for Excellence in Nanoscience , National Center for Nanoscience and Technology , Beijing 100190 , P. R. China
- University of Chinese Academy of Sciences , Beijing 100049 , P. R. China
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Jiang Y, Chowdhury S, Balasubramanian R. Nitrogen and sulfur codoped graphene aerogels as absorbents and visible light-active photocatalysts for environmental remediation applications. Environ Pollut 2019; 251:344-353. [PMID: 31091498 DOI: 10.1016/j.envpol.2019.04.132] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/01/2019] [Revised: 04/28/2019] [Accepted: 04/29/2019] [Indexed: 06/09/2023]
Abstract
Graphene aerogels (GAs) are increasingly being recognized as high performance multifunctional materials to tackle our current and emerging environmental concerns. In order to extend the application potential of GAs, herein we have successfully synthesized nitrogen (N) and sulfur (S) codoped GAs (NSGAs) via a simple, scalable, and inexpensive approach. Owing to their large specific surface area (up to 132 m2 g-1), profound porosity, superior mechanical properties, and coexistence of N and S atoms with tunable atomic content and bonding configurations, the as-prepared NSGAs demonstrated exceptional absorption capacity toward a broad spectrum of oils and organic solvents, with an average absorption rate many folds higher than conventional absorbents. Further, the NSGAs exhibited excellent photocatalytic activity for the decomposition of recalcitrant organic compounds under visible light illumination due to pronounced synergistic coupling effect between the heteroatoms. Specifically, after 5 h of exposure to visible light, a degradation efficiency of over 99% was observed and more than 84% of the total organic carbon was eliminated. Radical trapping experiments revealed that superoxide anion radicals are the predominant oxygen reactive species driving the photocatalytic reactions. More importantly, the mineralization byproducts did not pose any significant antibacterial activity, illustrating the environmentally benign nature of these macroscale photocatalysts.
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Affiliation(s)
- Yiqun Jiang
- Department of Civil & Environmental Engineering, National University of Singapore, 1 Engineering Drive 2, Singapore 117576, Singapore
| | - Shamik Chowdhury
- School of Environmental Science and Engineering, Indian Institute of Technology Kharagpur, West Bengal 721302, India
| | - Rajasekhar Balasubramanian
- Department of Civil & Environmental Engineering, National University of Singapore, 1 Engineering Drive 2, Singapore 117576, Singapore.
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29
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Alyafei HFSG, Fu W, Zalnezhad E, Jaber F, Hamouda AMS, Musharavati F, Bae S. Properties Investigation of GO/HA/Pt Composite Thin Film. Biomed Res Int 2019; 2019:4847932. [PMID: 31321236 PMCID: PMC6610737 DOI: 10.1155/2019/4847932] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/23/2019] [Revised: 04/23/2019] [Accepted: 05/22/2019] [Indexed: 11/24/2022]
Abstract
Hydroxyapatite/graphene oxide/platinum (HA/GO/Pt) nanocomposite was synthesized and electrodeposited on a pure zirconium substrate. The coated zirconium was annealed at 200, 300, 400, and 600°C in vacuum furnace in presence of argon gas. The structure and morphology of the coated samples were characterized. Biocompatibility and wear and corrosion resistances of specimens were examined. The result of corrosion tests shows that the graphene into HA/Pt composites significantly improves their corrosion resistance. The wear tests results of uncoated and coated samples before and after annealing show that coated samples annealed at 300°C had better wear resistance compared with uncoated and coated samples at other temperatures. Furthermore, the biocompatibility test shows that the coatings improved the cell attachment and proliferation compared to the pure zirconium substrate.
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Affiliation(s)
- Huda F. S. G. Alyafei
- Mechanical and Industrial Engineering Department, College of Engineering, Qatar University, 2713 Doha, Qatar
| | - W. Fu
- Department of Mechanical Engineering, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul 133-791, Republic of Korea
| | - E. Zalnezhad
- Department of Mechanical Engineering, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul 133-791, Republic of Korea
- Biomechacin LLC, San Antonio, TX 78251, USA
| | - F. Jaber
- Department of Biomedical Engineering, Ajman University, UAE
| | - A. M. S. Hamouda
- Mechanical and Industrial Engineering Department, College of Engineering, Qatar University, 2713 Doha, Qatar
| | - F. Musharavati
- Mechanical and Industrial Engineering Department, College of Engineering, Qatar University, 2713 Doha, Qatar
| | - S. Bae
- Department of Architectural Engineering, Hanyang University, Seoul 04763, Republic of Korea
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30
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Thangamuthu M, Hsieh KY, Kumar PV, Chen GY. Graphene- and Graphene Oxide-Based Nanocomposite Platforms for Electrochemical Biosensing Applications. Int J Mol Sci 2019; 20:E2975. [PMID: 31216691 PMCID: PMC6628170 DOI: 10.3390/ijms20122975] [Citation(s) in RCA: 62] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2019] [Revised: 06/01/2019] [Accepted: 06/04/2019] [Indexed: 12/14/2022] Open
Abstract
Graphene and its derivatives such as graphene oxide (GO) and reduced GO (rGO) offer excellent electrical, mechanical and electrochemical properties. Further, due to the presence of high surface area, and a rich oxygen and defect framework, they are able to form nanocomposites with metal/semiconductor nanoparticles, metal oxides, quantum dots and polymers. Such nanocomposites are becoming increasingly useful as electrochemical biosensing platforms. In this review, we present a brief introduction on the aforementioned graphene derivatives, and discuss their synthetic strategies and structure-property relationships important for biosensing. We then highlight different nanocomposite platforms that have been developed for electrochemical biosensing, introducing enzymatic biosensors, followed by non-enzymatic biosensors and immunosensors. Additionally, we briefly discuss their role in the emerging field of biomedical cell capture. Finally, a brief outlook on these topics is presented.
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Affiliation(s)
- Madasamy Thangamuthu
- Nanophotonics and Metrology Laboratory (NAM), Swiss Federal Institute of Technology Lausanne (EPFL), 1015 Lausanne, Switzerland.
| | - Kuan Yu Hsieh
- Institute of Biomedical Engineering, College of Electrical and Computer Engineering, National Chiao Tung University, Hsinchu 300, Taiwan.
- Department of Electrical and Computer Engineering, College of Electrical and Computer Engineering, National Chiao Tung University, Hsinchu 300, Taiwan.
| | - Priyank V Kumar
- School of Chemical Engineering, University of New South Wales, Sydney, NSW 2052, Australia.
| | - Guan-Yu Chen
- Institute of Biomedical Engineering, College of Electrical and Computer Engineering, National Chiao Tung University, Hsinchu 300, Taiwan.
- Department of Biological Science and Technology, College of Biological Science and Technology, National Chiao Tung University, Hsinchu 300, Taiwan.
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31
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Sturala J, Hermanová S, Artigues L, Sofer Z, Pumera M. Thiographene synthesized from fluorographene via xanthogenate with immobilized enzymes for environmental remediation. Nanoscale 2019; 11:10695-10701. [PMID: 31120458 DOI: 10.1039/c9nr02376c] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Graphene, graphene oxide and their related thiographene-, hydroxygraphene- or fluorographene-based materials have broad applications. We report on the thiol-functionalization of fluorographene via xanthogenate. Such thiographene contains 5.1 at% of sulphur in the form of thiol groups, which is the highest thiol content reported to date. Such tailored thiographene allows the immobilization of two types of enzymes. Here, we explore the functionalization of highly thiolated graphene with enzymes via physisorption or covalent linkage producing an important heterogeneous biocatalyst platform for wastewater treatment applications. Thiographene modified with a lipase from Mucor miehei can find utilization in lipid-rich wastewater treatment whereas the catalase-modified thiographene is intended for bioremediation applications. Upon increasing concentration of the thiol groups on graphene, protein loading of the catalase was increased by 16% and the ester bond cleavage activity of the thiographene-immobilized lipase was 129% that of the free lipase. We expect that such a highly active heterogeneous thiographene-based biocatalyst will find a use in water remediation applications.
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Affiliation(s)
- Jiri Sturala
- Center for Advanced Functional Nanorobots, Department of Inorganic Chemistry, Faculty of Chemical Technology, University of Chemistry and Technology Prague, Technická 5, 16628 Prague 6, Czech Republic.
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Maggira M, Deliyanni EA, Samanidou VF. Synthesis of Graphene Oxide Based Sponges and Their Study as Sorbents for Sample Preparation of Cow Milk Prior to HPLC Determination of Sulfonamides. Molecules 2019; 24:molecules24112086. [PMID: 31159316 PMCID: PMC6600354 DOI: 10.3390/molecules24112086] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2019] [Revised: 05/23/2019] [Accepted: 05/31/2019] [Indexed: 11/16/2022] Open
Abstract
In the present study, a novel, simple, and fast sample preparation technique is described for the determination of four sulfonamides (SAs), namely Sulfathiazole (STZ), sulfamethizole (SMT), sulfadiazine (SDZ), and sulfanilamide (SN) in cow milk prior to HPLC. This method takes advantage of a novel material that combines the extractive properties of graphene oxide (GO) and the known properties of common polyurethane sponge (PU) and that makes sample preparation easy, fast, cheap and efficient. The PU-GO sponge was prepared by an easy and fast procedure and was characterized with FTIR spectroscopy. After the preparation of the sorbent material, a specific extraction protocol was optimized and combined with HPLC-UV determination could be applied for the sensitive analysis of trace SAs in milk. The proposed method showed good linearity while the coefficients of determination (R2) were found to be high (0.991-0.998). Accuracy observed was within the range 90.2-112.1% and precision was less than 12.5%. Limit of quantification for all analytes in milk was 50 μg kg-1. Furthermore, the PU-GO sponge as sorbent material offered a very clean extract, since no matrix effect was observed.
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Affiliation(s)
- Martha Maggira
- Laboratory of Analytical Chemistry, Department of Chemistry, Aristotle University of Thessaloniki, GR-541 24 Thessaloniki, Greece.
| | - Eleni A Deliyanni
- Laboratory of General and Environmental Technology, Department of Chemistry, Aristotle University of Thessaloniki, GR-541 24 Thessaloniki, Greece.
| | - Victoria F Samanidou
- Laboratory of General and Environmental Technology, Department of Chemistry, Aristotle University of Thessaloniki, GR-541 24 Thessaloniki, Greece.
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Rauti R, Medelin M, Newman L, Vranic S, Reina G, Bianco A, Prato M, Kostarelos K, Ballerini L. Graphene Oxide Flakes Tune Excitatory Neurotransmission in Vivo by Targeting Hippocampal Synapses. Nano Lett 2019; 19:2858-2870. [PMID: 30983361 DOI: 10.1021/acs.nanolett.8b04903] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Synapses compute and transmit information to connect neural circuits and are at the basis of brain operations. Alterations in their function contribute to a vast range of neuropsychiatric and neurodegenerative disorders and synapse-based therapeutic intervention, such as selective inhibition of synaptic transmission, may significantly help against serious pathologies. Graphene is a two-dimensional nanomaterial largely exploited in multiple domains of science and technology, including biomedical applications. In hippocampal neurons in culture, small graphene oxide nanosheets (s-GO) selectively depress glutamatergic activity without altering cell viability. Glutamate is the main excitatory neurotransmitter in the central nervous system and growing evidence suggests its involvement in neuropsychiatric disorders. Here we demonstrate that s-GO directly targets the release of presynaptic vesicle. We propose that s-GO flakes reduce the availability of transmitter, via promoting its fast release and subsequent depletion, leading to a decline ofglutamatergic neurotransmission. We injected s-GO in the hippocampus in vivo, and 48 h after surgery ex vivo patch-clamp recordings from brain slices show a significant reduction in glutamatergic synaptic activity in respect to saline injections.
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Affiliation(s)
- Rossana Rauti
- Neuron Physiology and Technology Lab , International School for Advanced Studies (SISSA), Neuroscience , 34136 Trieste Italy
| | - Manuela Medelin
- Neuron Physiology and Technology Lab , International School for Advanced Studies (SISSA), Neuroscience , 34136 Trieste Italy
- Life Science Department , University of Trieste , 34127 Trieste Italy
| | - Leon Newman
- Nanomedicine Lab, Faculty of Biology, Medicine and Health, and National Graphene Institute , University of Manchester , AV Hill Building, Manchester M13 9PL , United Kingdom
| | - Sandra Vranic
- Nanomedicine Lab, Faculty of Biology, Medicine and Health, and National Graphene Institute , University of Manchester , AV Hill Building, Manchester M13 9PL , United Kingdom
| | - Giacomo Reina
- CNRS, Immunology, Immunopathology, and Therapeutic Chemistry , University of Strasbourg , UPR 3572, 67000 Strasbourg , France
| | - Alberto Bianco
- CNRS, Immunology, Immunopathology, and Therapeutic Chemistry , University of Strasbourg , UPR 3572, 67000 Strasbourg , France
| | - Maurizio Prato
- Department of Chemical and Pharmaceutical Sciences , University of Trieste , 34127 Trieste , Italy
- Nanobiotechnology Laboratory , CIC biomaGUNE , 00685 San Sebastiàn , Spain
- Ikerbasque, Basque Foundation for Science , 48013 Bilbao , Spain
| | - Kostas Kostarelos
- Nanomedicine Lab, Faculty of Biology, Medicine and Health, and National Graphene Institute , University of Manchester , AV Hill Building, Manchester M13 9PL , United Kingdom
| | - Laura Ballerini
- Neuron Physiology and Technology Lab , International School for Advanced Studies (SISSA), Neuroscience , 34136 Trieste Italy
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35
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Aujara KM, Chieng BW, Ibrahim NA, Zainuddin N, Thevy Ratnam C. Gamma-Irradiation Induced Functionalization of Graphene Oxide with Organosilanes. Int J Mol Sci 2019; 20:ijms20081910. [PMID: 31003413 PMCID: PMC6514852 DOI: 10.3390/ijms20081910] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2019] [Revised: 03/13/2019] [Accepted: 03/19/2019] [Indexed: 11/20/2022] Open
Abstract
Gamma-ray radiation was used as a clean and easy method for turning the physicochemical properties of graphene oxide (GO) in this study. Silane functionalized-GO were synthesized by chemically grafting 3-aminopropyltriethoxysilane (APTES) and 3-glycidyloxypropyltrimethoxysilane (GPTES) onto GO surface using gamma-ray irradiation. This established non-contact process is used to create a reductive medium which is deemed simpler, purer and less harmful compared conventional chemical reduction. The resulting functionalized-GO were characterized by Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM), thermogravimetric analysis (TGA), and Raman spectroscopy. The chemical interaction of silane with the GO surface was confirmed by FT-IR. X-ray diffraction reveals the change in the crystalline phases was due to surface functionalization. Surface defects of the GO due to the introduction of silane mioties was revealed by Raman spectroscopy. Thermogravimetric analysis of the functionalized-GO exhibits a multiple peaks in the temperature range of 200–650 °C which corresponds to the degradation of chemically grafted silane on the GO surface.
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Affiliation(s)
- Kabiru Musa Aujara
- Department of Chemistry, Faculty of Science, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia.
| | - Buong Woei Chieng
- Department of Chemistry, Faculty of Science, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia.
- Materials Processing and Technology Laboratory, Institute of Advanced Technology, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia.
| | - Nor Azowa Ibrahim
- Department of Chemistry, Faculty of Science, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia.
- Materials Processing and Technology Laboratory, Institute of Advanced Technology, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia.
| | - Norhazlin Zainuddin
- Department of Chemistry, Faculty of Science, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia.
| | - Chantara Thevy Ratnam
- Radiation Processing Technology Division, Malaysian Nuclear Agency, 43000 Bangi, Kajang, Malaysia.
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Zhang Z, He D, Liu H, Ren M, Zhang Y, Qu J, Lu N, Guan J, Yuan X. Synthesis of graphene/black phosphorus hybrid with highly stable P-C bond towards the enhancement of photocatalytic activity. Environ Pollut 2019; 245:950-956. [PMID: 30682751 DOI: 10.1016/j.envpol.2018.11.090] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/12/2018] [Revised: 11/26/2018] [Accepted: 11/27/2018] [Indexed: 06/09/2023]
Abstract
Black phosphorus (BP), a superior two-dimensional (2D) semiconductor, has attracted much attention due to its unique properties. The graphene (GR)-BP hybrid was synthesized through one pot chemical vapor transport (CVT) approach. The characterization results indicated that P atom was successfully incorporated into GR by the formation of P-C bond. Remarkably, the newly-synthesized GR-BP represented high photocatalytic activity towards 2-chlorophenol (2-CP) degradation, due to the high efficiency of charge separation and transformation caused by the direct band gap of BP and carrier mobility of GR. The removal efficiency for 2-CP reached up to 87.08% within visible light irradiation for 180 min (λ > 420 nm). The degradation rate of GR-BP hybrid for 2-CP was approximately 7.29-fold than that of BP within 30 min. In addition, the little increasing of the peak for P-O bond in GR-BP hybrid was observed after being exposed in air for 15 days, meant that the stability of BP was significantly enhanced. It was caused by the decreasing of the oxidation sites in BP due to the formation of P-C bond in hybrid. In brief, our synthetic method for GR-BP not only provides a novel route for the improvement of the stability of BP, but also constitutes an insight into the promising practical application of BP in the photocatalysis field.
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Affiliation(s)
- Zhaocheng Zhang
- School of Environment, Northeast Normal University, Changchun, Jilin, 130024, China
| | - Dongyang He
- School of Environment, Northeast Normal University, Changchun, Jilin, 130024, China
| | - Haiyang Liu
- School of Environment, Northeast Normal University, Changchun, Jilin, 130024, China
| | - Miao Ren
- School of Environment, Northeast Normal University, Changchun, Jilin, 130024, China
| | - Yanan Zhang
- School of Environment, Northeast Normal University, Changchun, Jilin, 130024, China.
| | - Jiao Qu
- School of Environment, Northeast Normal University, Changchun, Jilin, 130024, China.
| | - Nan Lu
- School of Environment, Northeast Normal University, Changchun, Jilin, 130024, China
| | - Jiunian Guan
- School of Environment, Northeast Normal University, Changchun, Jilin, 130024, China
| | - Xing Yuan
- School of Environment, Northeast Normal University, Changchun, Jilin, 130024, China
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37
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Senese AD, Chalifoux WA. Nanographene and Graphene Nanoribbon Synthesis via Alkyne Benzannulations. Molecules 2018; 24:molecules24010118. [PMID: 30598009 PMCID: PMC6337508 DOI: 10.3390/molecules24010118] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2018] [Revised: 12/24/2018] [Accepted: 12/25/2018] [Indexed: 11/16/2022] Open
Abstract
The extension of π-conjugation of polycyclic aromatic hydrocarbons (PAHs) via alkyne benzannulation reactions has become an increasingly utilized tool over the past few years. This short review will highlight recent work of alkyne benzannulations in the context of large nanographene as well as graphene nanoribbon synthesis along with a brief discussion of the interesting physical properties these molecules display.
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Affiliation(s)
- Amber D Senese
- Department of Chemistry, University of Nevada, Reno, 1664 N. Virginia St., Reno, NV 89557, USA.
| | - Wesley A Chalifoux
- Department of Chemistry, University of Nevada, Reno, 1664 N. Virginia St., Reno, NV 89557, USA.
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38
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Abstract
Graphene, graphene oxide, and reduced graphene oxide have been widely considered as promising candidates for industrial and biomedical applications due to their exceptionally high mechanical stiffness and strength, excellent electrical conductivity, high optical transparency, and good biocompatibility. In this article, we reviewed several techniques that are available for the synthesis of graphene-based nanomaterials, and discussed the biocompatibility and toxicity of such nanomaterials upon exposure to mammalian cells under in vitro and in vivo conditions. Various synthesis strategies have been developed for their fabrication, generating graphene nanomaterials with different chemical and physical properties. As such, their interactions with cells and organs are altered accordingly. Conflicting results relating biocompatibility and cytotoxicity induced by graphene nanomaterials have been reported in the literature. In particular, graphene nanomaterials that are used for in vitro cell culture and in vivo animal models may contain toxic chemical residuals, thereby interfering graphene-cell interactions and complicating interpretation of experimental results. Synthesized techniques, such as liquid phase exfoliation and wet chemical oxidation, often required toxic organic solvents, surfactants, strong acids, and oxidants for exfoliating graphite flakes. Those organic molecules and inorganic impurities that are retained in final graphene products can interact with biological cells and tissues, inducing toxicity or causing cell death eventually. The residual contaminants can cause a higher risk of graphene-induced toxicity in biological cells. This adverse effect may be partly responsible for the discrepancies between various studies in the literature.
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Affiliation(s)
- Chengzhu Liao
- Department of Materials Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, China.
| | - Yuchao Li
- Department of Materials Science and Engineering, Liaocheng University, Liaocheng 252000, China.
| | - Sie Chin Tjong
- Department of Physics, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong, China.
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Ramalingam V, Raja S, Sundaramahalingam S, Rajaram R. Chemical fabrication of graphene oxide nanosheets attenuates biofilm formation of human clinical pathogens. Bioorg Chem 2018; 83:326-335. [PMID: 30396117 DOI: 10.1016/j.bioorg.2018.10.052] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2018] [Revised: 10/03/2018] [Accepted: 10/26/2018] [Indexed: 11/17/2022]
Abstract
Graphene oxide (GO) has been recently attracted considerable interest for its potential applications in physical, chemical and biological properties. In the present study, the GO nanosheets were prepared by a chemical exfoliation technique using a modified Hummers method. Initially, the prepared GO nanosheets were confirmed by UV-vis spectroscopy and further characterized by FE-SEM, Edax, HR-TEM and SAED that demonstrated the formation of GO nanosheets with few layers flat sheet structure with hexagonal lattice crystalline nature. The FTIR spectra revealed the presence of various oxygen containing functional groups has been produced from graphite plane by exfoliation technique. The prepared GO nanosheets showed excellent antibiotic resistant activity against planktonic bacteria and more effective to damage the established biofilms and inhibits the biofilm formation of human clinical pathogens like E. coli and P. aeruginosa. Further, the GO nanosheets were found to be non-toxic to normal mammalian cells and there are no apparent morphological changes were observed in control and treated cells. In conclusion, GO nanosheets were effectively preventing the formation of biofilms and kills the represent bacteria that suggested the GO nanosheets could be used for the prevention and treatment of biofilm-related infections.
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Affiliation(s)
- Vaikundamoorthy Ramalingam
- DNA Barcoding and Marine Genomics Laboratory, Department of Marine Science, Bharathidasan University, Tiruchirappalli, Tamil Nadu, India
| | - Sakthivel Raja
- Crystal Growth and Thin Film Laboratory, Department of Physics, Bharathidasan University, Tiruchirappalli, Tamil Nadu, India
| | - Subramaniam Sundaramahalingam
- Department of Electrical and Electronics Engineering, Mepco Schlenk Engineering College, Sivakasi, Tamil Nadu, India
| | - Rajendran Rajaram
- DNA Barcoding and Marine Genomics Laboratory, Department of Marine Science, Bharathidasan University, Tiruchirappalli, Tamil Nadu, India.
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Islami M, Zarrabi A, Tada S, Kawamoto M, Isoshima T, Ito Y. Controlled quercetin release from high-capacity-loading hyperbranched polyglycerol-functionalized graphene oxide. Int J Nanomedicine 2018; 13:6059-6071. [PMID: 30323593 PMCID: PMC6179725 DOI: 10.2147/ijn.s178374] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
PURPOSE An efficient drug-delivery system was prepared based on graphene oxide using a facile and one-step strategy for controlling the release of anticancer drugs. METHODS Fabrication of single-layer graphene oxide (GO) sheets was carried out by both modified and improved Hummers method. Biocompatible hyperbranched polyglycerol (HPG) was grafted on the surface of GO through the ring-opening hyperbranched polymerization of glycidol. Various ratios of GO and glycidol were used for polymer grafting. An anticancer drug, quercetin (Qu), was loaded into modified GO via noncovalent interactions. RESULTS Polymer grafting on the surface of GO sheets was confirmed by results obtained from Fourier-transform infrared and Raman spectroscopy, thermogravimetric analysis, energy-dispersive X-ray and X-ray spectroscopy, scanning electron microscopy, and atomic force microscopy. It was revealed that polymerization increased d-spacing between the basal planes. In addition, as a hydrophilic polymer, HPG improved the stability and dispersion of GO sheets in biological solutions and endowed extra drug-loading capacity for the sheets. The effect of hyperbranched structure on drug loading and release was investigated by comparing drug loading and release for HPG-modified GO and linear PPO-modified GO. Our experiments indicated high drug-loading capacity (up to 185%), and excellent encapsulation efficiency (up to 93%) for HPG-GO compared to linear PO-grafted GO. The release profile of Qu under various pH levels exhibited controlled and sustained drug release without an initial burst effect for HPG-GO, suggesting that an acidic solution could facilitate drug release. HPG-GO did not show any cytotoxicity on the MCF7 cell line in different concentrations during 72 hours' incubation. Uptake and entrance of HPG-GO into the cells were verified by determining the intracellular amount of Qu by high-performance liquid chromatography. CONCLUSION A combination of the unique properties of GO and the biodegradable polymer polyglycerol revealed high drug-loading capacity, pH-dependent drug release, and cytocompatibility with HPG-GO, thus introducing it as a promising nanocarrier for anticancer drug delivery.
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Affiliation(s)
- Matin Islami
- Department of Biotechnology, Faculty of Advanced Sciences and Technologies, University of Isfahan, Isfahan 8174673441, Iran,
| | - Ali Zarrabi
- Department of Biotechnology, Faculty of Advanced Sciences and Technologies, University of Isfahan, Isfahan 8174673441, Iran,
| | - Seiichi Tada
- Emergent Bioengineering Materials Research Team, RIKEN Center for Emergent Matter Science, Wako, Saitama 351-0198, Japan
| | - Masuki Kawamoto
- Emergent Bioengineering Materials Research Team, RIKEN Center for Emergent Matter Science, Wako, Saitama 351-0198, Japan
- Nano Medical Engineering Laboratory, RIKEN Cluster for Pioneering Research, Wako, Saitama 351-0198, Japan
| | - Takashi Isoshima
- Nano Medical Engineering Laboratory, RIKEN Cluster for Pioneering Research, Wako, Saitama 351-0198, Japan
| | - Yoshihiro Ito
- Emergent Bioengineering Materials Research Team, RIKEN Center for Emergent Matter Science, Wako, Saitama 351-0198, Japan
- Nano Medical Engineering Laboratory, RIKEN Cluster for Pioneering Research, Wako, Saitama 351-0198, Japan
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Perdikaki A, Galeou A, Pilatos G, Prombona A, Karanikolos GN. Ion-Based Metal/Graphene Antibacterial Agents Comprising Mono-Ionic and Bi-Ionic Silver and Copper Species. Langmuir 2018; 34:11156-11166. [PMID: 30145895 DOI: 10.1021/acs.langmuir.8b01880] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Design of novel and more efficient antibacterial agents is a continuous and dynamic process due to the appearance of new pathogenic strains and inherent resistance development to existing antimicrobial treatments. Metallic nanoparticles (NPs) are highly investigated, yet the role of released ions is crucial in the antibacterial activity of the NP-based systems. We developed herein ion-based, metal/graphene hybrid structures comprising surface-bound Ag and Cu mono-ionic and Ag/Cu bi-ionic species on functionalized graphene, without involvement of NPs. The antibacterial performance of the resulting systems was evaluated against Escherichia coli cells using a series of parametrization experiments of varying metal ion types and concentrations and compared with that of the respective NP-based systems. It was found that the bi-ionic Ag/Cu-graphene materials exhibited superior performance compared to that of the mono-ionic analogues owing to the synergistic action of the combination of the two different metal ions on the surface and the enhancing role of the graphene support, whereas all ion-based systems performed superiorly compared to their NP-based counterparts of the same metal type and concentration. In addition, the materials exhibited sustained action, as their activity was maintained after reuse in repeated cycles employing fresh bacteria in each cycle. The systems developed herein may open new prospects toward the development of novel, efficient, and tunable antibacterial agents by properly supporting and configuring metals in ionic form.
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Affiliation(s)
| | | | | | | | - Georgios N Karanikolos
- Department of Chemical Engineering, The Petroleum Institute , Khalifa University of Science & Technology , P.O. Box 2533, Abu Dhabi , UAE
- Center for Membranes and Advanced Water Technology , Khalifa University of Science & Technology , P.O. Box 127788, Abu Dhabi , UAE
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Zhang Q, Tu Q, Hickey ME, Xiao J, Gao B, Tian C, Heng P, Jiao Y, Peng T, Wang J. Preparation and study of the antibacterial ability of graphene oxide-catechol hybrid polylactic acid nanofiber mats. Colloids Surf B Biointerfaces 2018; 172:496-505. [PMID: 30205340 DOI: 10.1016/j.colsurfb.2018.09.003] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2018] [Revised: 08/06/2018] [Accepted: 09/01/2018] [Indexed: 12/30/2022]
Abstract
The functionalization of electrospun mats with antimicrobial nanomaterials is an attractive strategy when developing functional graphene oxide coating materials to prevent bacterial colonization on surfaces. In this study, we demonstrated a simple approach to produce antimicrobial electrospun mats by dip-coating a polylactic acid (PLA) nanofiber into a graphene oxide-catechol derivative. PLA was first electrospun to yield narrow-diameter polymeric nanofibers. We then modified the graphene oxide (GO) with a catechol derivative - dopamine methacrylamide monomer (DMA) - to synthesize a GO-DMA nanocomposite material which exhibited robust antimicrobial properties. The catechol groups promote the immobilization of graphene oxide onto the PLA nanofibers and possess strong antimicrobial properties. We therefore selected this functional group to modify GO. We dipped the GO-DMA onto the PLA nanofiber to produce the final functionalized electrospun mats. The PLA mats which were functionalized using the GO-DMA nanocomposite (PLA-GO-DMA) displayed antibacterial activity against both Gram-negative (Escherichia coli) and Gram-positive (Staphylococcus aureus) bacteria. Furthermore, we studied the biocompatibility of the mats by culturing the cell lines (HepG2, A549, and HUVEC-C) of PLA-GO-DMA among the nanofibers which exhibited excellent biocompatibility. These results collectively demonstrate the potential of PLA-GO-DMA nanofiber mats as antimicrobial biomaterials and provide fundamental information toward the establishment of future biomedical applications.
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Affiliation(s)
- Qingmiao Zhang
- College of Chemistry & Pharmacy, Northwest A&F University, Yangling, Shaanxi, 712100, PR China
| | - Qin Tu
- College of Chemistry & Pharmacy, Northwest A&F University, Yangling, Shaanxi, 712100, PR China; Department of Food Science, University of Massachusetts, Amherst, MA, USA.
| | - Michael E Hickey
- Department of Food Science, University of Massachusetts, Amherst, MA, USA
| | - Jingcheng Xiao
- College of Chemistry & Pharmacy, Northwest A&F University, Yangling, Shaanxi, 712100, PR China
| | - Bo Gao
- College of Chemistry & Pharmacy, Northwest A&F University, Yangling, Shaanxi, 712100, PR China
| | - Chang Tian
- College of Chemistry & Pharmacy, Northwest A&F University, Yangling, Shaanxi, 712100, PR China
| | - Peng Heng
- College of Chemistry & Pharmacy, Northwest A&F University, Yangling, Shaanxi, 712100, PR China
| | - Ying Jiao
- College of Chemistry & Pharmacy, Northwest A&F University, Yangling, Shaanxi, 712100, PR China
| | - Tangqiong Peng
- College of Chemistry & Pharmacy, Northwest A&F University, Yangling, Shaanxi, 712100, PR China
| | - Jinyi Wang
- College of Chemistry & Pharmacy, Northwest A&F University, Yangling, Shaanxi, 712100, PR China.
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Muralisankar I, Agilan S, Selvakumar R, Vairam S. Synthesis of Co 3O 4/graphene nanocomposite using paraffin wax for adsorption of methyl violet in water. IET Nanobiotechnol 2018; 12:787-794. [PMID: 30104453 PMCID: PMC8676403 DOI: 10.1049/iet-nbt.2017.0181] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2017] [Revised: 03/03/2018] [Accepted: 03/19/2018] [Indexed: 11/20/2022] Open
Abstract
This study discusses the use of Co3O4 impregnated graphene (CoOIG) as an efficient adsorbent for the removal of methyl violet (MV) dye from wastewater. CoOIG nanocomposites have been prepared by pyrolyzing paraffin wax with cobalt acetate. The synthesised nanocomposite was characterised by X-ray diffraction, field emission scanning electron microscope, transmission electron microscope, Fourier transform infrared spectroscope, Raman spectroscopy, and Brunauer-Emmett-Teller isotherm studies. The above studies indicate that the composites have cobalt oxide nanoparticles of size 51-58 nm embedded in the graphene nanoparticles. The adsorption studies were conducted with various parameters, pH, temperature and initial dye concentration, adsorbent dosage and contact time by the batch method. The adsorption of MV dye by the adsorbent CoOIG was about 90% initially at 15 min and 98% dye removal at pH 5. The data were fitted in Langmuir, Freundlich, Temkin, and Dubinin-Radushkevich and Sips isotherm models. Various thermodynamic parameters like Gibbs free energy, enthalpy, and entropy of the on-going adsorption process have also been calculated.
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Affiliation(s)
- Indiran Muralisankar
- Department of Chemistry, Coimbatore Institute of Technology, Coimbatore, TN 641014, India.
| | - Santhanam Agilan
- Department of Physics, Coimbatore Institute of Technology, Coimbatore, TN 641014, India
| | - Rajendran Selvakumar
- Department of Chemistry, Government College of Technology, Coimbatore, TN 641013, India
| | - Sundararajan Vairam
- Department of Chemistry, Government College of Technology, Coimbatore, TN 641013, India
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Abstract
Mass production of high-quality graphene dispersions under mild conditions impacts the utility of the material for biomedical applications. Various proteins have been used to prepare graphene dispersions, rare sources, and expensive prices for these proteins restrict their large-scale utility for the production of graphene. Here, inexpensive silk proteins as an abundant resource in nature were used for graphene exfoliation. The silk proteins were assembled into hydrophobic nanofibers with negative charge, and then optimized for the production of graphene. Significantly higher concentrations (>8 mg mL-1) and yields (>30%) of graphene dispersions under ambient aqueous conditions were achieved compared with previous protein-assisted exfoliation systems. The exfoliated graphene exhibited excellent stability in water and fetal bovine serum solution, cytocompatibility, and conductivity, suggesting a promising future in biomedical and bioengineering applications.
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Affiliation(s)
| | - Ling Wang
- Biology Institute , Qilu University of Technology (Shandong Academy of Sciences) , Shandong 250000 , People's Republic of China
| | | | - David L Kaplan
- Department of Biomedical Engineering , Tufts University , Medford , Massachusetts 02155 , United States
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45
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Ren B, Wang T, Qu G, Deng F, Liang D, Yang W, Liu M. In situ synthesis of g-C 3N 4/TiO 2 heterojunction nanocomposites as a highly active photocatalyst for the degradation of Orange II under visible light irradiation. Environ Sci Pollut Res Int 2018; 25:19122-19133. [PMID: 29725923 DOI: 10.1007/s11356-018-2114-z] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/05/2018] [Accepted: 04/23/2018] [Indexed: 06/08/2023]
Abstract
As a highly active photocatalyst, g-C3N4/TiO2 heterojunction nanocomposites were in situ synthesized by simple ultrasonic mixing and calcination by using TiO2 and melamine as precursors. The morphology and structure of the prepared photocatalysts were characterized by field emission scanning electron microscopy, transmission electron microscopy, X-ray diffraction, Fourier-transform infrared spectroscopy, UV-Vis diffuse reflectance spectroscopy, and X-ray photoelectron spectroscopy. The photocatalytic activities of g-C3N4/TiO2 nanocomposites to degrade Orange II (AO7) under visible light irradiation were evaluated. Results showed that the photocatalytic rate of the prepared g-C3N4/TiO2 photocatalyst to degrade AO7 was about three times than that of pristine TiO2 and g-C3N4. The g-C3N4/TiO2 composite with a ratio of 1:4 had the highest degradation efficiency for AO7 solution. Its degradation efficiency under acidic conditions was significantly higher than that under alkaline conditions. The enhancement of photocatalytic activity can be attributed to the formation of heterojunctions between g-C3N4 and TiO2, which leads to rapid charge transfer and the efficient separation of photogenerated electron-hole pairs. The recycling experiment indicated that the photocatalyst of g-C3N4/TiO2 nanocomposites still maintained good photochemical stability and recyclability after five cycles; this finding was important for its practical applications. A series of free radical trapping experiments showed that •O2- played a crucial role in the degradation of AO7. Graphical Abstract ᅟ.
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Affiliation(s)
- Bin Ren
- College of Natural Resources and Environment, Northwest A&F University, Yangling, 712100, Shaanxi, People's Republic of China
| | - Tiecheng Wang
- College of Natural Resources and Environment, Northwest A&F University, Yangling, 712100, Shaanxi, People's Republic of China
- Key Laboratory of Plant Nutrition and the Agri-environment in Northwest China, Ministry of Agriculture, Yangling, 712100, Shaanxi, People's Republic of China
| | - Guangzhou Qu
- College of Natural Resources and Environment, Northwest A&F University, Yangling, 712100, Shaanxi, People's Republic of China.
- Key Laboratory of Plant Nutrition and the Agri-environment in Northwest China, Ministry of Agriculture, Yangling, 712100, Shaanxi, People's Republic of China.
| | - Fang Deng
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University, Nanchang, 330063, Jiangxi, People's Republic of China
| | - Dongli Liang
- College of Natural Resources and Environment, Northwest A&F University, Yangling, 712100, Shaanxi, People's Republic of China
- Key Laboratory of Plant Nutrition and the Agri-environment in Northwest China, Ministry of Agriculture, Yangling, 712100, Shaanxi, People's Republic of China
| | - Wenli Yang
- College of Natural Resources and Environment, Northwest A&F University, Yangling, 712100, Shaanxi, People's Republic of China
| | - Meishan Liu
- College of Natural Resources and Environment, Northwest A&F University, Yangling, 712100, Shaanxi, People's Republic of China
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46
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Fan B, Li Y, Han F, Su T, Li J, Zhang R. Synthesis of Ag/rGO composite materials with antibacterial activities using facile and rapid microwave-assisted green route. J Mater Sci Mater Med 2018; 29:69. [PMID: 29748718 DOI: 10.1007/s10856-018-6081-1] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/28/2017] [Accepted: 04/23/2018] [Indexed: 06/08/2023]
Abstract
The present paper represents a facile and rapid synthesis of silver-reduced graphene oxide Ag/rGO (Ag/reduced graphite oxides) composites with the help of microwave irradiation. This is a rapid green route requiring power microwave irradiation only 400 W(30 s) and 200 W (60 s) for the uniform Ag nanoparticles with average diameter of ~10 nm embedded on rGO sheets. In the microwave irradiation process, rGO samples absorb electromagnetic energy to be heated rapidly due to their intrinsic dielectric and conductive losses. Local hot sheets appear in aqueous solution, facilitating homogeneous nucleation, as well as the grain growth of Ag crystallites throughout the rGO sheets. The obtained Ag/rGO composites exhibited significant antibacterial property towards Gram-negative bacteria (E. coli and P. aeruginosa), Gram-positive bacteria (S. aureus and Enterococcus), and white rot fungus. The minimum bactericidal concentration of the Ag /rGO nanocomposite against E. coli was about 1 μg/mL. Strong interaction between Ag/rGO composites and bacteria contributed to the totally non-activity of bacteria. We designed Ag/rGO nanocomposite with excellent antibacterial activities by facile andrapid microwave-assisted green route. In Ag/rGO nanocomposite, the morphology and size distributions of Ag particles anchored on the rGO sheets can controlled via the microwave irradiation power and time. The results suggested that in the microwave field, GO reduced into unique rGO sheets and uniform AgNPs with average size of 12 nm can be decorated on rGO sheets at 30 s and at 200 W, respectively. we successfully demonstrated small silver particles anchored on graphene displayed great antibacterial activities against Gram-negative bacteria (E. coli and P. aeruginosa), Gram-positive bacteria (S. aureus and Enterococcus) and white rot fungus. Ag/rGO nanocomposites may have potential applications as antibacterial agent for daily life.
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Affiliation(s)
- Bingbing Fan
- School of Material Science and Engineering, Zhengzhou University, Zhengzhou, Henan, 450001, China
| | - Yaya Li
- School of Material Science and Engineering, Zhengzhou University, Zhengzhou, Henan, 450001, China
| | - Fengqi Han
- School of Material Science and Engineering, Zhengzhou University, Zhengzhou, Henan, 450001, China
| | - Tingting Su
- School of Material Science and Engineering, Zhengzhou University, Zhengzhou, Henan, 450001, China
| | - Jingguo Li
- Zhengzhou University People's hospital, Zhengzhou University, Zhengzhou, Henan, 450003, China.
| | - Rui Zhang
- School of Material Science and Engineering, Zhengzhou University, Zhengzhou, Henan, 450001, China.
- Henan Key Laboratory of Aeronautical Material and Application Technology, Zhengzhou University of Aeronautics, Zhengzhou, Henan, 450015, China.
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47
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Liu X, Miller AL, Waletzki BE, Lu L. Cross-linkable graphene oxide embedded nanocomposite hydrogel with enhanced mechanics and cytocompatibility for tissue engineering. J Biomed Mater Res A 2018; 106:1247-1257. [PMID: 29280326 DOI: 10.1002/jbm.a.36322] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2017] [Revised: 11/15/2017] [Accepted: 12/20/2017] [Indexed: 01/24/2023]
Abstract
Graphene oxide (GO) is an attractive material that can be utilized to enhance the modulus and conductivities of substrates and hydrogels. To covalently cross-link graphene oxide sheets into hydrogels, abundant cross-linkable double bonds were introduced to synthesize the graphene-oxide-tris-acrylate sheet (GO-TrisA). Polyacrylamide (PAM) nanocomposite hydrogels were then fabricated with inherent covalently and permanently cross-linked GO-TrisA sheets. Results showed that the covalently cross-linked GO-TrisA/PAM nanocomposite hydrogel had enhanced mechanical strength, thermo stability compared with GO/PAM hydrogel maintained mainly by hydrogen bonding between PAM chains and GO sheets. In vitro cell study showed that the covalently cross-linked rGO-TrisA/PAM nanocomposite hydrogel had excellent cytocompatibility after in situ reduction. These results suggest that rGO-TrisA/PAM nanocomposite hydrogel holds great potential for tissue engineering applications. © 2018 Wiley Periodicals, Inc. J Biomed Mater Res Part A: 106A: 1247-1257, 2018.
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Affiliation(s)
- Xifeng Liu
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, Minnesota, 55905
- Department of Orthopedic Surgery, Mayo Clinic, Rochester, Minnesota, 55905
| | - A Lee Miller
- Department of Orthopedic Surgery, Mayo Clinic, Rochester, Minnesota, 55905
| | - Brian E Waletzki
- Department of Orthopedic Surgery, Mayo Clinic, Rochester, Minnesota, 55905
| | - Lichun Lu
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, Minnesota, 55905
- Department of Orthopedic Surgery, Mayo Clinic, Rochester, Minnesota, 55905
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48
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Jing Y, Yu B, Li P, Xiong B, Cheng Y, Li Y, Li C, Xiao X, Chen M, Chen L, Zhang Y, Zhao M, Cheng C. Synthesis of graphene/DPA composite for determination of nicotine in tobacco products. Sci Rep 2017; 7:14332. [PMID: 29084991 PMCID: PMC5662576 DOI: 10.1038/s41598-017-13716-2] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2017] [Accepted: 09/27/2017] [Indexed: 11/14/2022] Open
Abstract
In this contribution, the azo dye (E)-1-(4-((4-(phenylamino)phenyl)diazenyl) phenyl)ethanone (DPA) was combined with reduced graphene oxide (RGO) for the electrochemical modification of a pencil graphite electrode (RGO/DPA/PGE) surface. A series of electrochemical measurements were used for the characterization of the modified electrode surfaces. At the modified electrode, nicotine was irreversibly reduced. An obvious increase was observed in the reductive peak current of nicotine at the modified electrode, indicating the capability of the RGO/DPA composite to increase the electron transfer rate. The current was found proportional to the nicotine concentration in a range of 31 to 1900 μM, and the limit of detection (LOD) was calculated as 7.6 μM.
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Affiliation(s)
- Yanqiu Jing
- College of Tobacco Science, Henan Agricultural University, Zhengzhou, Henan province, China
| | - Baohua Yu
- Economics and Management College, National Tobacco Cultivation and Physiology and Biochemistry Research Centre, Henan Agricultural University, Zhengzhou, China
| | - Penghui Li
- College of Tobacco Science, Henan Agricultural University, Zhengzhou, Henan province, China
| | - Bin Xiong
- Technology Center of Hubei China Tobacco Industry Co, Ltd., Wuhan, Hubei Province, China
| | - Yuyuan Cheng
- Nanyang Branch of Henan Tobacco Corporation, Nanyang, Henan Province, China
| | - Yaoguang Li
- Technology Center of Henan China Tobacco Industrial Co, Ltd., Zhengzhou, Henan Province, China
| | - Chunguang Li
- Technology Center of Henan China Tobacco Industrial Co, Ltd., Zhengzhou, Henan Province, China
| | - Xianyi Xiao
- Ganzhou Branch of Jiangxi Tobacco Corporation, Ganzhou, Jiangxi Province, China
| | - Mengqi Chen
- Technology Center of Henan China Tobacco Industrial Co, Ltd., Zhengzhou, Henan Province, China
| | - Liangyuan Chen
- Technology Center of Henan China Tobacco Industrial Co, Ltd., Zhengzhou, Henan Province, China
- Key Laboratory of Tobacco Processing Morphology Research in Tobacco Industry of CNTC, Zhengzhou, Henan Province, China
| | - Yu Zhang
- School of Geographical Science and Tourism, Meizhou Jiaying University, Meisong Avenue, Meizhou, 514015, China
| | - Mingqin Zhao
- College of Tobacco Science, Henan Agricultural University, Zhengzhou, Henan province, China.
| | - Chuance Cheng
- College of Tobacco Science, Henan Agricultural University, Zhengzhou, Henan province, China.
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Abstract
Fibrillar deposits of the human islet amyloid polypeptide (hIAPP) are considered as a root of Type II diabetes mellitus. Fluorinated graphene quantum dots (FGQDs) are new carbon nanomaterials with unique physicochemical properties containing highly electronegative F atoms. Herein we report a single step synthesis method of FGQDs with an inhibitory effect on aggregation and cytotoxicity of hIAPP in vitro. Highly fluorescent and water dispersible FGQDs, less than 3 nm in size, were synthesized by the microwave-assisted hydrothermal method. Efficient inhibition capability of FGQDs to amyloid aggregation was demonstrated. The morphologies of hIAPP aggregates were observed to change from the entangled long fibrils to short thin fibrils and amorphous aggregates in the presence of FGQDs. In thioflavin T fluorescence analysis, inhibited aggregation with prolonged lag time and reduced fluorescence intensity at equilibrium were observed when hIAPP was incubated together with FGQDs. Circular dichroism spectrum results reveal that FGQDs could inhibit conformational transition of the peptide from native structure to β-sheets. FGQDs could also rescue the cytotoxicity of INS-1 cells induced by hIAPP in a dose dependent manner. This study could be beneficial for design and preparation of inhibitors for amyloids, which is important for prevention and treatment of amyloidosis.
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Affiliation(s)
- Maryam Yousaf
- CAS Key Laboratory of Standardization and Measurement for Nanotechnology, CAS Key Laboratory of Biological Effects of Nanomaterials and Nanosafety, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing 100190, China
- University of Chinese Academy of Sciences , 19 A Yuquan Rd, Shijingshan District, Beijing, P. R. China 100049
| | - Huan Huang
- CAS Key Laboratory of Standardization and Measurement for Nanotechnology, CAS Key Laboratory of Biological Effects of Nanomaterials and Nanosafety, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing 100190, China
| | - Ping Li
- CAS Key Laboratory of Standardization and Measurement for Nanotechnology, CAS Key Laboratory of Biological Effects of Nanomaterials and Nanosafety, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing 100190, China
| | - Chen Wang
- CAS Key Laboratory of Standardization and Measurement for Nanotechnology, CAS Key Laboratory of Biological Effects of Nanomaterials and Nanosafety, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing 100190, China
- University of Chinese Academy of Sciences , 19 A Yuquan Rd, Shijingshan District, Beijing, P. R. China 100049
| | - Yanlian Yang
- CAS Key Laboratory of Standardization and Measurement for Nanotechnology, CAS Key Laboratory of Biological Effects of Nanomaterials and Nanosafety, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing 100190, China
- University of Chinese Academy of Sciences , 19 A Yuquan Rd, Shijingshan District, Beijing, P. R. China 100049
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50
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Karikalan N, Karthik R, Chen SM, Karuppiah C, Elangovan A. Sonochemical Synthesis of Sulfur Doped Reduced Graphene Oxide Supported CuS Nanoparticles for the Non-Enzymatic Glucose Sensor Applications. Sci Rep 2017; 7:2494. [PMID: 28559593 PMCID: PMC5449390 DOI: 10.1038/s41598-017-02479-5] [Citation(s) in RCA: 77] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2017] [Accepted: 04/11/2017] [Indexed: 11/13/2022] Open
Abstract
Over the present material synthesis routes, the sonochemical route is highly efficient and comfortable way to produce nanostructured materials. In this way, the copper sulfide (CuS-covellite) and sulfur doped reduced graphene oxide (S-rGO) nanocomposite was prepared by sonochemical method. Interestingly, the structure of the as-prepared S-rGO/CuS was changed from the covellite to digenite phase. Herein, the S-rGO was act as a mild oxidizer and liable for the structural transformations. These structural changes are sequentially studied by various physicochemical characterizations such as Fourier transform infrared spectroscopy (FT-IR), Raman spectroscopy, X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS) and Transmission electron microscopy (TEM). After scrupulous structural evaluations, the transformation of CuS phase was identified and documented. This oxidized CuS has an excellent electrocatalytic activity when compare to the bulk CuS. This S-rGO/CuS was further used for the determination of glucose and acquired good electrocatalytic performances. This S-rGO/CuS was exhibited a wide linear concentration range, 0.0001-3.88 mM and 3.88-20.17 mM, and a low-level detection limit of 32 nM. Moreover, we have validated the practicability of our developed glucose sensor in real biological samples.
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Affiliation(s)
- Natarajan Karikalan
- Electroanalysis and Bioelectrochemistry Lab, Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, No. 1, Section 3, Chung-Hsiao East Road, Taipei, 106, Taiwan (ROC)
| | - Raj Karthik
- Electroanalysis and Bioelectrochemistry Lab, Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, No. 1, Section 3, Chung-Hsiao East Road, Taipei, 106, Taiwan (ROC)
| | - Shen-Ming Chen
- Electroanalysis and Bioelectrochemistry Lab, Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, No. 1, Section 3, Chung-Hsiao East Road, Taipei, 106, Taiwan (ROC).
| | - Chelladurai Karuppiah
- Electroanalysis and Bioelectrochemistry Lab, Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, No. 1, Section 3, Chung-Hsiao East Road, Taipei, 106, Taiwan (ROC)
- Department of Chemistry, National Taiwan University, No. 1, Section 4, Roosevelt Road, Taipei, 106, Taiwan (ROC)
| | - Arumugam Elangovan
- Department of Chemistry, Thiagarajar college, Madurai, Tamilnadu, 625009, India
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