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Lan YX, Chen YH, Chao YL, Chang YH, Huang YC, Liu WR, Wong WT, Sun ACF, Santiago KS, Yeh JM. Green and Heavy-Duty Anticorrosion Coatings: Waterborne Epoxy Thermoset Composites Modified through Variation of Zinc Dust Loading and Incorporation of Amine-Capped Aniline Trimer and Graphene Oxide. Polymers (Basel) 2024; 16:1252. [PMID: 38732721 PMCID: PMC11085474 DOI: 10.3390/polym16091252] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2024] [Revised: 04/20/2024] [Accepted: 04/26/2024] [Indexed: 05/13/2024] Open
Abstract
In this study, an array of environmentally friendly and heavy-duty anticorrosion composite coatings were prepared. The synthesis involved amine-capped aniline trimer (ACAT) produced by an oxidative coupling reaction and graphene oxide (GO) prepared based on Hummer's method, and later, the waterborne epoxy thermoset composite (WETC) coatings were prepared by thermal ring-opening polymerization of EP 147w, a commercial waterborne epoxy resin, in the presence of ACAT and/or GO with zinc dust (ZD). A synergistic effect was observed by replacing a significant amount of the ZD loading in the WETC by simultaneously incorporating a small amount of ACAT and GO. The electrochemical corrosion measurements of the as-prepared WETC coatings indicated that incorporating 5% w/w ACAT or 0.5% w/w GO separately replaced approximately 30% w/w or 15% w/w of the ZD, respectively. Moreover, the WETC coatings containing 5% w/w ACAT and 0.5% w/w GO simultaneously were found to replace 45% w/w of the ZD. A salt spray test based on ASTM B-117 also showed a consistent trend with the electrochemical results. Incorporating small amounts of ACAT and GO in WETC coatings instead of ZD not only maintains the anticorrosion performance but also enhances adhesion and abrasion resistance, as demonstrated by the adhesion and abrasion tests.
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Affiliation(s)
- Yun-Xiang Lan
- Department of Chemistry, Center for Nanotechnology at Chung Yuan Christian University, Chung Li 32023, Taiwan, China; (Y.-X.L.); (Y.-H.C.); (Y.-L.C.); (Y.-H.C.); (Y.-C.H.)
| | - Yun-Hsuan Chen
- Department of Chemistry, Center for Nanotechnology at Chung Yuan Christian University, Chung Li 32023, Taiwan, China; (Y.-X.L.); (Y.-H.C.); (Y.-L.C.); (Y.-H.C.); (Y.-C.H.)
| | - Ying-Lung Chao
- Department of Chemistry, Center for Nanotechnology at Chung Yuan Christian University, Chung Li 32023, Taiwan, China; (Y.-X.L.); (Y.-H.C.); (Y.-L.C.); (Y.-H.C.); (Y.-C.H.)
| | - Yu-Hsuan Chang
- Department of Chemistry, Center for Nanotechnology at Chung Yuan Christian University, Chung Li 32023, Taiwan, China; (Y.-X.L.); (Y.-H.C.); (Y.-L.C.); (Y.-H.C.); (Y.-C.H.)
| | - Yu-Chi Huang
- Department of Chemistry, Center for Nanotechnology at Chung Yuan Christian University, Chung Li 32023, Taiwan, China; (Y.-X.L.); (Y.-H.C.); (Y.-L.C.); (Y.-H.C.); (Y.-C.H.)
| | - Wei-Ren Liu
- Department of Chemical Engineering, R&D Center for Membrane Technology, Center for Circular Economy, Chung Yuan Christian University, Taoyuan City 32023, Taiwan, China
| | - Wei-Tsan Wong
- Shiny Chemical Industrial Co., Ltd., Kaohsiung 82841, Taiwan, China; (W.-T.W.); (A.C.-F.S.)
| | - Andrew Chi-Fa Sun
- Shiny Chemical Industrial Co., Ltd., Kaohsiung 82841, Taiwan, China; (W.-T.W.); (A.C.-F.S.)
| | - Karen S. Santiago
- Department of Chemistry, College of Science, Research Center for the Natural and Applied Sciences, University of Santo Tomas, Manila 1015, Philippines;
| | - Jui-Ming Yeh
- Department of Chemistry, Center for Nanotechnology at Chung Yuan Christian University, Chung Li 32023, Taiwan, China; (Y.-X.L.); (Y.-H.C.); (Y.-L.C.); (Y.-H.C.); (Y.-C.H.)
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2
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Ajmal S, Kumar A, Mushtaq MA, Tabish M, Zhao Y, Zhang W, Khan AS, Saad A, Yasin G, Zhao W. Uniting Synergistic Effect of Single-Ni Site and Electric Field of B- Bridged-N for Boosted Electrocatalytic Nitrate Reduction to Ammonia. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024:e2310082. [PMID: 38470193 DOI: 10.1002/smll.202310082] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/06/2023] [Revised: 02/19/2024] [Indexed: 03/13/2024]
Abstract
Electrochemical conversion of nitrate, a prevalent water pollutant, to ammonia (NH3 ) is a delocalized and green path for NH3 production. Despite the existence of different nitrate reduction pathways, selectively directing the reaction pathway on the road to NH3 is now hindered by the absence of efficient catalysts. Single-atom catalysts (SACs) are extensively investigated in a wide range of catalytic processes. However, their application in electrocatalytic nitrate reduction reaction (NO3 - RR) to NH3 is infrequent, mostly due to their pronounced inclination toward hydrogen evolution reaction (HER). Here, Ni single atoms on the electrochemically active carrier boron, nitrogen doped-graphene (BNG) matrix to modulate the atomic coordination structure through a boron-spanning strategy to enhance the performance of NO3 - RR is designed. Density functional theory (DFT) study proposes that BNG supports with ionic characteristics, offer a surplus electric field effect as compared to N-doped graphene, which can ease the nitrate adsorption. Consistent with the theoretical studies, the as-obtained NiSA@BNG shows higher catalytic activity with a maximal NH3 yield rate of 168 µg h-1 cm-2 along with Faradaic efficiency of 95% and promising electrochemical stability. This study reveals novel ways to rationally fabricate SACs' atomic coordination structure with tunable electronic properties to enhance electrocatalytic performance.
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Affiliation(s)
- Saira Ajmal
- Institute for Advanced Study, Shenzhen University, Shenzhen, Guangdong, 518060, China
| | - Anuj Kumar
- Nano-Technology Research Laboratory, Department of Chemistry, GLA University, Mathura, Uttar Pradesh, 281406, India
| | - Muhammad Asim Mushtaq
- Institute for Advanced Study, Shenzhen University, Shenzhen, Guangdong, 518060, China
| | - Mohammad Tabish
- College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Yulin Zhao
- School of Materials and Chemistry, Southwest University of Science and Technology, Mianyang, 621010, China
| | - Wenbin Zhang
- Institute for Advanced Study, Shenzhen University, Shenzhen, Guangdong, 518060, China
| | - Abdul Sammed Khan
- Institute for Advanced Study, Shenzhen University, Shenzhen, Guangdong, 518060, China
| | - Ali Saad
- Centre for Water Technology (WATEC) & Department of Biological and Chemical Engineering, Aarhus University, Universitetsbyen 36, Aarhus C, 8000, Denmark
| | - Ghulam Yasin
- Institute for Advanced Study, Shenzhen University, Shenzhen, Guangdong, 518060, China
| | - Wei Zhao
- Institute for Advanced Study, Shenzhen University, Shenzhen, Guangdong, 518060, China
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3
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Ranjan P, Abubakar Sadique M, Yadav S, Khan R, Kumar Srivastava A. Electrochemical Nanobiosensor of Ionic Liquid Functionalized MoO 3 -rGO for Sensitive Detection of Carcinoembryonic Antigen. Chempluschem 2024:e202300625. [PMID: 38321835 DOI: 10.1002/cplu.202300625] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2023] [Revised: 01/29/2024] [Accepted: 02/02/2024] [Indexed: 02/08/2024]
Abstract
Early diagnosis of cancer can be achieved by detecting associated biomarkers before the appearance of symptoms. Herein, we have developed an electrochemical immunosensor of ionic liquid tailored to molybdenum trioxide-reduced graphene oxide (MoO3 -rGO-IL) nanocomposite to detect carcinoembryonic antigen (CEA), a cancer biomarker. The MoO3 -rGO-IL nanocomposite has been synthesized in situ via the hydrothermal method. The functionalization of 1-butyl-3-methylimidazolium tetrafluoroborate IL with MoO3 -rGO synergistically improves the electrochemical and surface properties of the nanocomposite. The characterization studies revealed that the MoO3 -rGO-IL nanocomposite is a highly appropriate material for the construction of immunosensors. The material exhibits exceptional electrical conductivity, surface properties, stability, and a large electrochemical effective surface area (13.77×10-2 cm2 ) making it ideal for fabricating immunosensors. The quantitative outcome showed that the developed immunosensor (BSA/anti-CEA/MoO3 -rGO-IL/GCE) possesses excellent sensitivity, broad linearity from 25 fg mL-1 to 100 ng mL-1 , and a low detection limit of 1.19 fg mL-1 . Moreover, the remarkable selectivity, repeatability, and efficiency of detecting CEA in serum specimens demonstrated the feasibility of the immunosensor. Thus, the projected electrochemical immunosensor can potentially be utilized for the quantification of CEA in clinical specimens.
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Affiliation(s)
- Pushpesh Ranjan
- CSIR -, Advanced Materials and Processes Research Institute (AMPRI), Hoshangabad Road, 462026, Bhopal, India
- Academy of Scientific and Innovative Research (AcSIR), 201002, Ghaziabad, India
| | - Mohd Abubakar Sadique
- CSIR -, Advanced Materials and Processes Research Institute (AMPRI), Hoshangabad Road, 462026, Bhopal, India
- Academy of Scientific and Innovative Research (AcSIR), 201002, Ghaziabad, India
| | - Shalu Yadav
- CSIR -, Advanced Materials and Processes Research Institute (AMPRI), Hoshangabad Road, 462026, Bhopal, India
- Academy of Scientific and Innovative Research (AcSIR), 201002, Ghaziabad, India
| | - Raju Khan
- CSIR -, Advanced Materials and Processes Research Institute (AMPRI), Hoshangabad Road, 462026, Bhopal, India
- Academy of Scientific and Innovative Research (AcSIR), 201002, Ghaziabad, India
| | - Avanish Kumar Srivastava
- CSIR -, Advanced Materials and Processes Research Institute (AMPRI), Hoshangabad Road, 462026, Bhopal, India
- Academy of Scientific and Innovative Research (AcSIR), 201002, Ghaziabad, India
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4
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Yu X, Liu H, Ling S, Wu X, Lian C, Xu J. Microfluidic Printing of Vertically-Oriented Nanosheets/MOFs Hetero-Interface for Intensive Pseudocapacitive Storage. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024; 20:e2305396. [PMID: 37797184 DOI: 10.1002/smll.202305396] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/28/2023] [Revised: 09/16/2023] [Indexed: 10/07/2023]
Abstract
Efficient manufacture of electroactive vertically-oriented nanosheets with enhanced electrolyte mass diffusion and strong interfacial redox dynamics is critical for realizing high energy density of miniature supercapacitor (SC), but still challenging. Herein, microfluidic droplet printing is developed to controllably construct vertically-oriented graphene/ZIF-67 hetero-microsphere (VAGS/ZIF-67), where the ZIF-67 is coordinately grown on vertically-oriented graphene framework via Co─O─C bonds. The VAGS/ZIF-67 shows ordered porous channel, high electroactivity and strong interfacial interaction, providing rapid electrolyte diffusion dynamics and high faradaic capacitance in KOH solution (1674 F g-1 , 1004 C g-1 ), which are verified by computational fluid dynamics (CFD) and density functional theory (DFT). Moreover, the VAGS/ZIF-67 based SC exhibits large energy density (100 Wh kg-1 ), excellent durability (10 000 cycles and high/low temperature), and robust power-supply applications in portable electronics.
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Affiliation(s)
- Xude Yu
- The State Key Laboratory of Chemical Engineering, Department of Chemical Engineering, Tsinghua University, Beijing, 100084, P. R. China
| | - Hengyuan Liu
- The State Key Laboratory of Chemical Engineering, Department of Chemical Engineering, Tsinghua University, Beijing, 100084, P. R. China
| | - Sida Ling
- The State Key Laboratory of Chemical Engineering, Department of Chemical Engineering, Tsinghua University, Beijing, 100084, P. R. China
| | - Xingjiang Wu
- The State Key Laboratory of Chemical Engineering, Department of Chemical Engineering, Tsinghua University, Beijing, 100084, P. R. China
| | - Cheng Lian
- The State Key Laboratory of Chemical Engineering and Shanghai Engineering Research Center of Hierarchical Nanomaterials, School of Chemical Engineering, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai, 200237, China
| | - Jianhong Xu
- The State Key Laboratory of Chemical Engineering, Department of Chemical Engineering, Tsinghua University, Beijing, 100084, P. R. China
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5
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Amaral SI, Silva FALS, Costa-Almeida R, Timochenco L, Fernandes JR, Sarmento B, Gonçalves IC, Magalhães FD, Pinto AM. Pharmaceutical Formulations Containing Graphene and 5-Fluorouracil for Light-Emitting Diode-Based Photochemotherapy of Skin Cancer. ACS APPLIED MATERIALS & INTERFACES 2024; 16:4333-4347. [PMID: 38240200 DOI: 10.1021/acsami.3c13409] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/01/2024]
Abstract
Nonmelanoma skin cancer (NMSC) is the most common cancer worldwide, among which 80% is basal cell carcinoma (BCC). Current therapies' low efficacy, side effects, and high recurrence highlight the need for alternative treatments. In this work, a partially reduced nanographene oxide (p-rGOn) developed in our laboratory was used. It has been achieved through a controlled reduction of nanographene oxide via UV-C irradiation that yields small nanometric particles (below 200 nm) that preserve the original water stability while acquiring high light-to-heat conversion efficiency. The latter is explained by a loss of carbon-oxygen single bonds (C-O) and the re-establishment of sp2 carbon bonds. p-rGOn was incorporated into a Carbopol hydrogel together with the anticancer drug 5-fluorouracil (5-FU) to evaluate a possible combined PTT and chemotherapeutic effect. Carbopol/p-rGOn/5-FU hydrogels were considered noncytotoxic toward normal skin cells (HFF-1). However, when A-431 skin cancer cells were exposed to NIR irradiation for 30 min in the presence of Carbopol/p-rGOn/5-FU hydrogels, almost complete eradication was achieved after 72 h, with a 90% reduction in cell number and 80% cell death of the remaining cells after a single treatment. NIR irradiation was performed with a light-emitting diode (LED) system, developed in our laboratory, which allows adjustment of applied light doses to achieve a safe and selective treatment, instead of the standard laser systems that are associated with damages in the healthy tissues in the tumor surroundings. Those are the first graphene-based materials containing pharmaceutical formulations developed for BCC phototherapy.
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Affiliation(s)
- Sara I Amaral
- LEPABE─Laboratory for Process Engineering, Environment, Biotechnology and Energy, Faculdade de Engenharia, Universidade do Porto, Rua Dr. Roberto Frias s/n, 4200-180 Porto, Portugal
- ALiCE─Associate Laboratory in Chemical Engineering, Faculdade de Engenharia, Universidade do Porto, Rua Dr. Roberto Frias s/n, 4200-180 Porto, Portugal
- Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Rua Alfredo Allen, 208, 4200-180 Porto, Portugal
- INEB-Instituto de Engenharia Biomédica, Universidade do Porto, Rua Alfredo Allen, 208, 4200-180 Porto, Portugal
| | - Filipa A L S Silva
- LEPABE─Laboratory for Process Engineering, Environment, Biotechnology and Energy, Faculdade de Engenharia, Universidade do Porto, Rua Dr. Roberto Frias s/n, 4200-180 Porto, Portugal
- ALiCE─Associate Laboratory in Chemical Engineering, Faculdade de Engenharia, Universidade do Porto, Rua Dr. Roberto Frias s/n, 4200-180 Porto, Portugal
- Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Rua Alfredo Allen, 208, 4200-180 Porto, Portugal
- INEB-Instituto de Engenharia Biomédica, Universidade do Porto, Rua Alfredo Allen, 208, 4200-180 Porto, Portugal
| | - Raquel Costa-Almeida
- Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Rua Alfredo Allen, 208, 4200-180 Porto, Portugal
- INEB-Instituto de Engenharia Biomédica, Universidade do Porto, Rua Alfredo Allen, 208, 4200-180 Porto, Portugal
| | - Licínia Timochenco
- LEPABE─Laboratory for Process Engineering, Environment, Biotechnology and Energy, Faculdade de Engenharia, Universidade do Porto, Rua Dr. Roberto Frias s/n, 4200-180 Porto, Portugal
- ALiCE─Associate Laboratory in Chemical Engineering, Faculdade de Engenharia, Universidade do Porto, Rua Dr. Roberto Frias s/n, 4200-180 Porto, Portugal
- Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Rua Alfredo Allen, 208, 4200-180 Porto, Portugal
- INEB-Instituto de Engenharia Biomédica, Universidade do Porto, Rua Alfredo Allen, 208, 4200-180 Porto, Portugal
| | - José Ramiro Fernandes
- CQVR─Centro de Química Vila Real, Universidade de Trás-os-Montes e Alto Douro, 5000-801 Vila Real, Portugal
- Physical Department, University of Trás-os-Montes and Alto Douro, Quinta dos Prados, 5001-801 Vila Real, Portugal
| | - Bruno Sarmento
- ICBAS-Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto, Rua Jorge Viterbo Ferreira, 228, 4050-313 Porto, Portugal
- CESPU, IINFACTS-Institute for Research and Advanced Training in Health Sciences and Technologies, Rua Central de Gandra 1317, 4585-116 Gandra, Portugal
| | - Inês C Gonçalves
- Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Rua Alfredo Allen, 208, 4200-180 Porto, Portugal
- INEB-Instituto de Engenharia Biomédica, Universidade do Porto, Rua Alfredo Allen, 208, 4200-180 Porto, Portugal
| | - Fernão D Magalhães
- LEPABE─Laboratory for Process Engineering, Environment, Biotechnology and Energy, Faculdade de Engenharia, Universidade do Porto, Rua Dr. Roberto Frias s/n, 4200-180 Porto, Portugal
- ALiCE─Associate Laboratory in Chemical Engineering, Faculdade de Engenharia, Universidade do Porto, Rua Dr. Roberto Frias s/n, 4200-180 Porto, Portugal
| | - Artur M Pinto
- LEPABE─Laboratory for Process Engineering, Environment, Biotechnology and Energy, Faculdade de Engenharia, Universidade do Porto, Rua Dr. Roberto Frias s/n, 4200-180 Porto, Portugal
- ALiCE─Associate Laboratory in Chemical Engineering, Faculdade de Engenharia, Universidade do Porto, Rua Dr. Roberto Frias s/n, 4200-180 Porto, Portugal
- Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Rua Alfredo Allen, 208, 4200-180 Porto, Portugal
- INEB-Instituto de Engenharia Biomédica, Universidade do Porto, Rua Alfredo Allen, 208, 4200-180 Porto, Portugal
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6
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Peng Y, Bian Z, Wang F, Li S, Xu S, Wang H. Electrocatalytic degradation of p-nitrophenol on metal-free cathode: Superoxide radical (O 2•-) production via molecular oxygen activation. JOURNAL OF HAZARDOUS MATERIALS 2024; 462:132797. [PMID: 37865078 DOI: 10.1016/j.jhazmat.2023.132797] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/11/2023] [Revised: 10/10/2023] [Accepted: 10/15/2023] [Indexed: 10/23/2023]
Abstract
Although metal-free electrodes in molecular oxygen-activated Fenton-like wastewater treatment technologies have been developed, the reactive oxygen species (ROS) generation mechanisms are still not sufficiently clear. As a typical example of refractory phenolic wastewater, p-nitrophenol (PNP) has been widely studied. This study demonstrated the critical role of superoxide radicals (O2•-) in PNP degradation by metal-free electrodes through electron spin resonance (ESR), ROS quenching, and density functional theory (DFT) tests. The most superior metal-free electrode exhibited a mass activity of approximately 133.5 h-1 gcatalyst-1. Experimental and theoretical studies revealed the mechanism of O2•- generation via oxygen activation, including one- and three-electron transfer pathways, and found that O2•- mainly attacked the nitro group of PNP to degrade and transform the pollutant. This study enhances the mechanistic understanding of metal-free materials in the electrochemical degradation of refractory pollutants.
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Affiliation(s)
- Yiyin Peng
- College of Water Sciences, Beijing Normal University, Beijing 100875, PR China
| | - Zhaoyong Bian
- College of Water Sciences, Beijing Normal University, Beijing 100875, PR China.
| | - Feng Wang
- College of Water Sciences, Beijing Normal University, Beijing 100875, PR China
| | - Shunlin Li
- Beijing Key Lab for Source Control Technology of Water Pollution, College of Environmental Science and Engineering, Beijing Forestry University, Beijing 100083, PR China
| | - Shiwei Xu
- Beijing Capital Eco-Environment Protection Group Co., Ltd., Beijing 100044, PR China
| | - Hui Wang
- Beijing Key Lab for Source Control Technology of Water Pollution, College of Environmental Science and Engineering, Beijing Forestry University, Beijing 100083, PR China.
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7
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Uddin MM, Kabir MH, Ali MA, Hossain MM, Khandaker MU, Mandal S, Arifutzzaman A, Jana D. Graphene-like emerging 2D materials: recent progress, challenges and future outlook. RSC Adv 2023; 13:33336-33375. [PMID: 37964903 PMCID: PMC10641765 DOI: 10.1039/d3ra04456d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2023] [Accepted: 09/18/2023] [Indexed: 11/16/2023] Open
Abstract
Owing to the unique physical and chemical properties of 2D materials and the great success of graphene in various applications, the scientific community has been influenced to explore a new class of graphene-like 2D materials for next-generation technological applications. Consequently, many alternative layered and non-layered 2D materials, including h-BN, TMDs, and MXenes, have been synthesized recently for applications related to the 4th industrial revolution. In this review, recent progress in state-of-the-art research on 2D materials, including their synthesis routes, characterization and application-oriented properties, has been highlighted. The evolving applications of 2D materials in the areas of electronics, optoelectronics, spintronic devices, sensors, high-performance and transparent electrodes, energy conversion and storage, electromagnetic interference shielding, hydrogen evolution reaction (HER), oxygen evolution reaction (OER), and nanocomposites are discussed. In particular, the state-of-the-art applications, challenges, and outlook of every class of 2D material are also presented as concluding remarks to guide this fast-progressing class of 2D materials beyond graphene for scientific research into next-generation materials.
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Affiliation(s)
- Md Mohi Uddin
- Department of Physics, Chittagong University of Engineering and Technology Chattogram-4349 Bangladesh
| | - Mohammad Humaun Kabir
- Department of Physics, Chittagong University of Engineering and Technology Chattogram-4349 Bangladesh
| | - Md Ashraf Ali
- Department of Physics, Chittagong University of Engineering and Technology Chattogram-4349 Bangladesh
| | - Md Mukter Hossain
- Department of Physics, Chittagong University of Engineering and Technology Chattogram-4349 Bangladesh
| | - Mayeen Uddin Khandaker
- Faculty of Graduate Studies, Daffodil International University Daffodil Smart City, Birulia, Savar Dhaka 1216 Bangladesh
- Centre for Applied Physics and Radiation Technologies, School of Engineering and Technology, Sunway University 47500 Bandar Sunway Selangor Malaysia
| | - Sumit Mandal
- Vidyasagar College 39, Sankar Ghosh Lane Kolkata 700006 West Bengal India
| | - A Arifutzzaman
- Tyndall National Institute, University College Cork Lee Maltings Cork T12 R5CP Ireland
| | - Debnarayan Jana
- Department of Physics, University of Calcutta 92 A P C Road Kolkata 700009 West Bengal India
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8
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Yadav S, Sadique MA, Ranjan P, Khan R. Synergistically functionalized molybdenum disulfide-reduced graphene oxide nanohybrid based ultrasensitive electrochemical immunosensor for real sample analysis of COVID-19. Anal Chim Acta 2023; 1265:341326. [PMID: 37230571 DOI: 10.1016/j.aca.2023.341326] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2023] [Revised: 05/04/2023] [Accepted: 05/04/2023] [Indexed: 05/27/2023]
Abstract
Herein, we have proposed a straightforward and label-free electrochemical immunosensing strategy supported on a glassy carbon electrode (GCE) modified with a biocompatible and conducting biopolymer functionalized molybdenum disulfide-reduced graphene oxide (CS-MoS2/rGO) nanohybrid to investigate the SARS-CoV-2 virus. CS-MoS2/rGO nanohybrid-based immunosensor employs recombinant SARS-CoV-2 Spike RBD protein (rSP) that specifically identifies antibodies against the SARS-CoV-2 virus via differential pulse voltammetry (DPV). The antigen-antibody interaction diminishes the current responses of the immunosensor. The obtained results indicate that the fabricated immunosensor is extraordinarily capable of highly sensitive and specific detection of the corresponding SARS-CoV-2 antibodies with a LOD of 2.38 zg mL-1 in phosphate buffer saline (PBS) samples over a broad linear range between 10 zg mL-1-100 ng mL-1. In addition, the proposed immunosensor can detect attomolar concentrations in spiked human serum samples. The performance of this immunosensor is assessed using actual serum samples from COVID-19-infected patients. The proposed immunosensor can accurately and substantially differentiate between (+) positive and (-) negative samples. As a result, the nanohybrid can provide insight into the conception of Point-of-Care Testing (POCT) platforms for cutting-edge infectious disease diagnostic methods.
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Affiliation(s)
- Shalu Yadav
- CSIR - Advanced Materials and Processes Research Institute (AMPRI), Bhopal - 462026, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad - 201002, India
| | - Mohd Abubakar Sadique
- CSIR - Advanced Materials and Processes Research Institute (AMPRI), Bhopal - 462026, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad - 201002, India
| | - Pushpesh Ranjan
- CSIR - Advanced Materials and Processes Research Institute (AMPRI), Bhopal - 462026, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad - 201002, India
| | - Raju Khan
- CSIR - Advanced Materials and Processes Research Institute (AMPRI), Bhopal - 462026, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad - 201002, India.
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9
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Fernández K, Llanquileo A, Bustos M, Aedo V, Ruiz I, Carrasco S, Tapia M, Pereira M, Meléndrez MF, Aguayo C, Atanase LI. Self-Assembled CNF/rGO/Tannin Composite: Study of the Physicochemical and Wound Healing Properties. Polymers (Basel) 2023; 15:2752. [PMID: 37376399 DOI: 10.3390/polym15122752] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2023] [Revised: 05/26/2023] [Accepted: 06/06/2023] [Indexed: 06/29/2023] Open
Abstract
In this study, a conductive composite material, based on graphene oxide (GO), nanocellulose (CNF), and tannins (TA) from pine bark, reduced using polydopamine (PDA), was developed for wound dressing. The amount of CNF and TA was varied in the composite material, and a complete characterization including SEM, FTIR, XRD, XPS, and TGA was performed. Additionally, the conductivity, mechanical properties, cytotoxicity, and in vitro wound healing of the materials were evaluated. A successful physical interaction between CNF, TA, and GO was achieved. Increasing CNF amount in the composite reduced the thermal properties, surface charge, and conductivity, but its strength, cytotoxicity, and wound healing performance were improved. The TA incorporation slightly reduced the cell viability and migration, which may be associated with the doses used and the extract's chemical composition. However, the in-vitro-obtained results demonstrated that these composite materials can be suitable for wound healing.
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Affiliation(s)
- Katherina Fernández
- Laboratorio de Biomateriales, Departamento de Ingeniería Química, Facultad de Ingeniería, Universidad de Concepción, Concepción 4070386, Chile
| | - Aylen Llanquileo
- Laboratorio de Biomateriales, Departamento de Ingeniería Química, Facultad de Ingeniería, Universidad de Concepción, Concepción 4070386, Chile
| | - Monserrat Bustos
- Laboratorio de Biomateriales, Departamento de Ingeniería Química, Facultad de Ingeniería, Universidad de Concepción, Concepción 4070386, Chile
| | - Valentina Aedo
- Laboratorio de Biomateriales, Departamento de Ingeniería Química, Facultad de Ingeniería, Universidad de Concepción, Concepción 4070386, Chile
| | - Isleidy Ruiz
- Laboratorio de Biomateriales, Departamento de Ingeniería Química, Facultad de Ingeniería, Universidad de Concepción, Concepción 4070386, Chile
| | - Sebastián Carrasco
- Laboratorio de Biomateriales, Departamento de Ingeniería Química, Facultad de Ingeniería, Universidad de Concepción, Concepción 4070386, Chile
| | - Mauricio Tapia
- Laboratorio de Biomateriales, Departamento de Ingeniería Química, Facultad de Ingeniería, Universidad de Concepción, Concepción 4070386, Chile
| | - Miguel Pereira
- Laboratorio de Productos Forestales, Departamento de Ingeniería Química, Facultad de Ingeniería, Universidad de Concepción, Concepción 4070386, Chile
| | - Manuel F Meléndrez
- Grupo Interdisciplinario de Nanotecnología Aplicada (GINA), Laboratorio de Materiales Híbridos (HML), Departamento de Ingeniería de Materiales (DIMAT), Facultad de Ingeniería, Universidad de Concepción, Concepción 4070386, Chile
| | - Claudio Aguayo
- Departmento de Inmunología y Bioquímica Clínica, Facultad de Farmacia, Universidad de Concepción, Concepción 4070386, Chile
| | - Leonard I Atanase
- Faculty of Medical Dentistry, Apollonia University of Iasi, 700511 Iasi, Romania
- Academy of Romanian Scientists, 050045 Bucharest, Romania
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10
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Nagaraja P, Rao HS, Pamidi V, Umeshbabu E, Rao GR, Justin P. Mn 3O 4 nano-octahedrons embedded in nitrogen-doped graphene oxide as potent anode material for lithium-ion batteries. IONICS 2023; 29:1-12. [PMID: 37360247 PMCID: PMC10187504 DOI: 10.1007/s11581-023-05035-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/25/2022] [Revised: 04/03/2023] [Accepted: 05/05/2023] [Indexed: 06/28/2023]
Abstract
Mn3O4 nano-octahedrons embedded in N-doped graphene oxide (MNGO) nanosheets were synthesized using a simple, energy-efficient, and rapid microwave-digested hydrothermal route in a single step. The structural and morphological aspects of synthesized materials were evaluated by XRD, IR, Raman, FE-SEM, and HR-TEM techniques. Then, the composite MNGO was tested for its Li-ion storage properties and compared with reduced graphene oxide (rGO) and Mn3O4 materials. The MNGO composite exhibited superior reversible specific capacity, excellent cyclic stability, and outstanding structural integrity throughout the electrochemical studies. The MNGO composite showed a reversible capacity of 898 mA h g-1 after 100 cycles at 100 mA g-1 and Coulombic efficiency of 97.8%. Even at a higher current density of 500 mA g-1, it exhibits a higher specific capacity of 532 mA h g-1 (~1.5 times higher than commercial graphite anode). These results demonstrate that Mn3O4 nano-octahedrons embedded on N-doped GO are a highly durable and potent anode material for LIBs. Supplementary Information The online version contains supplementary material available at 10.1007/s11581-023-05035-6.
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Affiliation(s)
- Pernapati Nagaraja
- Department of Chemistry and DST-Solar Energy Harnessing Centre, Indian Institute of Technology Madras, Chennai, 600036 India
- Department of Chemistry, Rajiv Gandhi University of Knowledge Technologies, RK Valley, Kadapa, Andhra Pradesh 516330 India
| | - H. Seshagiri Rao
- Department of Chemistry and DST-Solar Energy Harnessing Centre, Indian Institute of Technology Madras, Chennai, 600036 India
- Department of Chemistry, Rajiv Gandhi University of Knowledge Technologies, RK Valley, Kadapa, Andhra Pradesh 516330 India
| | - Venkat Pamidi
- Helmholtz Institute Ulm (HIU) Electrochemical Energy Storage, Helmholtzstraße 11, 89081 Ulm, Germany
| | - Ediga Umeshbabu
- Helmholtz Institute Ulm (HIU) Electrochemical Energy Storage, Helmholtzstraße 11, 89081 Ulm, Germany
| | - G. Ranga Rao
- Department of Chemistry and DST-Solar Energy Harnessing Centre, Indian Institute of Technology Madras, Chennai, 600036 India
| | - Ponniah Justin
- Department of Chemistry, Rajiv Gandhi University of Knowledge Technologies, RK Valley, Kadapa, Andhra Pradesh 516330 India
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11
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Peng X, Du Y, Gu Z, Deng K, Liu X, Lv X, Tian W, Ji J. Rearrangement of GO nanosheets with inner and outer forces under high-speed spin for supercapacitor. J Colloid Interface Sci 2023; 644:167-176. [PMID: 37105040 DOI: 10.1016/j.jcis.2023.04.067] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2022] [Revised: 03/31/2023] [Accepted: 04/16/2023] [Indexed: 04/29/2023]
Abstract
The self-standing graphene membranes are considered as ideal electrode materials for supercapacitors. However, maintaining highly regularized and uniform graphene membranes with satisfied electrochemical performance is still a challenge. Herein, with the chelation of metal cation and the radial shear force introduced by high-speed spinning, the uniform interlayer channels and shrunken cracks between adjacent nanosheets can be achieved in the metal-intercalated graphene oxide (GO) membranes, thus realizing regularization both in normal and radial direction. With the promotion in electron transfer and electrolyte penetration, the iron cross-linked GO membrane with spin coating for 40 cycles exhibits a high specific capacitance (427 F g-1 at 1 A g-1) and rate capability (42.6% capacitance retention from 1 to 40 A g-1), as well as excellent cyclic capability (90.5% capacitance retention after 20,000 cycles). Particularly, a 21% increasement in capacitance can be achieved after high-speed spinning treatment. Moreover, the spin regularization strategy can be extended to GO membranes cross-linked by various multi-valence metal cations, the electrochemical performance of metal-cation cross-linked GO membrane electrodes after high-speed spinning treatment can also be improved obviously. Therefore, this paper provides a novel method to fabricate highly ordered GO membranes with promising electrochemical performance, which presents an immense potential application in membrane materials applied in energy storage, separation and catalysis.
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Affiliation(s)
- Xianqiang Peng
- School of Chemical Engineering, Sichuan University, Chengdu 610065, PR China
| | - Yuping Du
- School of Chemical Engineering, Sichuan University, Chengdu 610065, PR China
| | - Zheng Gu
- School of Chemical Engineering, Sichuan University, Chengdu 610065, PR China
| | - Kuan Deng
- School of Chemical Engineering, Sichuan University, Chengdu 610065, PR China
| | - Xuesong Liu
- School of Chemical Engineering, Sichuan University, Chengdu 610065, PR China
| | - Xingbin Lv
- College of Chemistry and Environment, Southwest Minzu University, Chengdu, Sichuan 610041, PR China.
| | - Wen Tian
- School of Chemical Engineering, Sichuan University, Chengdu 610065, PR China
| | - Junyi Ji
- School of Chemical Engineering, Sichuan University, Chengdu 610065, PR China; State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, PR China.
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12
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Elgamouz A, Kawde AN, Shehadi IA, Sayari S, Abdullah Mohammed SA, Abdelrazeq A, Nassab CN, AbdelHamid AA, Hasan K. Modified Graphite Pencil Electrode Based on Graphene Oxide-Modified Fe 3O 4 for Ferrocene-Mediated Electrochemical Detection of Hemoglobin. ACS OMEGA 2023; 8:11880-11888. [PMID: 37033858 PMCID: PMC10077451 DOI: 10.1021/acsomega.2c07023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/03/2022] [Accepted: 03/16/2023] [Indexed: 06/19/2023]
Abstract
This study describes the synthesis of graphene oxide-modified magnetite (rGO/Fe3O4) and its use as an electrochemical sensor for the quantitative detection of hemoglobin (Hb). rGO is characterized by a 2θ peak at 10.03° in its X-ray diffraction, 1353 and 1586 cm-1 vibrations in Raman spectroscopy, while scanning electron microscopy coupled with energy-dispersive spectroscopy of rGO and rGO/Fe3O4 revealed the presence of microplate structures in both materials and high presence of iron in rGO/Fe3O4 with 50 wt %. The modified graphite pencil electrode, GPE/rGO/Fe3O4, is characterized using cyclic voltammetry. Higher electrochemical surface area is obtained when the GPE is modified with rGO/Fe3O4. Linear scan voltammetry is used to quantify Hb at the surface of the sensor using ferrocene (FC) as an electrochemical amplifier. Linear response for Hb is obtained in the 0.1-1.8 μM range with a regression coefficient of 0.995, a lower limit of detection of 0.090 μM, and a limit of quantitation of 0.28 μM. The sensor was free from interferents and successfully used to sense Hb in human urine. Due to the above-stated qualities, the GPE/rGO/Fe3O4 electrode could be a potential competitive sensor for trace quantities of Hb in physiological media.
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13
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Flexible electrochemical sensor with Fe/Co bimetallic oxides for sensitive analysis of glucose in human tears. Anal Chim Acta 2023; 1243:340781. [PMID: 36697172 DOI: 10.1016/j.aca.2023.340781] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2022] [Revised: 12/09/2022] [Accepted: 01/01/2023] [Indexed: 01/09/2023]
Abstract
The construction of uniformly dispersed structure with abundant active sites is crucial for fast electron transport and advancing electrocatalytic reactions. Herein, FexCoyO4-rGO was prepared by depositing Fe and Co bimetallic oxides in-situ on reduced graphene oxide through a simple process combined hydrothermal reaction and calcination. Fe was elaborately introduced into the synthesis of metal oxides to alleviate the aggregation of cobalt oxides and obtain nanocomposites with homogeneously structured and abundant redox sites, and the bimetallic oxides nanomaterials had enhanced electrocatalysis under the synergistic effect. The flexible electrode prepared from FexCoyO4-rGO exhibited excellent detection performance for glucose with a detection limit down low to 0.07 μM and a sensitivity of 1510 μM cm-2 mA-1. The adoption of flexible substrates improved the wearability of the electrode and broadened its practicality for detecting biomarkers on the skin surface. The constructed sensor was successfully used in the dynamic analysis of glucose content in tears, and the results were highly consistent with the test outcome of a commercial test kit, demonstrating its application prospects in non-invasive epidermal diabetes mellitus diagnosis.
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14
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Deshwal N, Singh MB, Bahadur I, Kaushik N, Kaushik NK, Singh P, Kumari K. A review on recent advancements on removal of harmful metal/metal ions using graphene oxide: Experimental and theoretical approaches. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 858:159672. [PMID: 36306838 DOI: 10.1016/j.scitotenv.2022.159672] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2022] [Revised: 10/16/2022] [Accepted: 10/19/2022] [Indexed: 06/16/2023]
Abstract
Graphene oxide is a two-dimensional carbon nanomaterial and has gained huge popularity over the last decade. Because, the graphene oxide can be dispersed in water easily and it is one of the most researched two-dimensional materials in the current time. The extraordinary properties shown by graphene oxide (GO) are due to its unique chemical structure; includes various hydrophilic functional groups containing oxygen such as carboxyl, hydroxyl, carbonyl and tiny sp2 carbon domains surrounded by sp3 domains. These groups are very peculiar for various applications as they allow covalent functionalisation with a plethora of compounds. Large surface area, intrinsic fluorescence, excellent surface functionality, amphiphilicity, improved conductivity, high adsorption capacity and superior biocompatibility are some of the chemical properties have drawn research from various fields. Graphene oxide has various interactions such as coordination, chelation, hydrogen bonding, electrostatic interaction, hydrophobic effects, π-π interaction, acid base interaction etc., with various metal ions. This review is focused on the removal of metals and metal ions due to their interactions mentioned above. Further, potential of composites of graphene oxide in the removal of metal and metal ions is also discussed. Further, the current challenges in this field at industrial-scale are also discussed.
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Affiliation(s)
- Nidhi Deshwal
- Department of Chemistry, Atma Ram Sanatan Dharma College, University of Delhi, New Delhi, India
| | - Madhur Babu Singh
- Department of Chemistry, Atma Ram Sanatan Dharma College, University of Delhi, New Delhi, India
| | - Indra Bahadur
- Department of Chemistry, Faculty of Natural and Agricultural Sciences, North-West University, South Africa
| | - Neha Kaushik
- Department of Biotechnology, College of Engineering, The University of Suwon, Hwaseong 18323, South Korea
| | - Nagendra Kumar Kaushik
- Plasma Bioscience Research Center, Department of Electrical and Biological Physics, Kwangwoon University, Seoul 01897, South Korea.
| | - Prashant Singh
- Department of Chemistry, Atma Ram Sanatan Dharma College, University of Delhi, New Delhi, India.
| | - Kamlesh Kumari
- Department of Zoology, University of Delhi, Delhi, India.
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15
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Performance investigation of a novel interfacially polymerized poly(urea-co-urethane) thin film nanocomposite on PAN membranes for solvent-resistant nanofiltration membrane application. JOURNAL OF THE IRANIAN CHEMICAL SOCIETY 2023. [DOI: 10.1007/s13738-023-02748-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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16
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Zhang Y, Li L, Cao Y, Yang Y, Wang W, Wang J. High-strength, low infrared-emission nonmetallic films for highly efficient Joule/solar heating, electromagnetic interference shielding and thermal camouflage. MATERIALS HORIZONS 2023; 10:235-247. [PMID: 36367197 DOI: 10.1039/d2mh01073a] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
High-strength nonmetallic materials with low infrared (IR) emission are rare in nature, yet highly anticipated especially in military and aerospace fields for thermal camouflage, IR stealth, energy-saving heating. Here, we reported a high-strength (422 MPa) nonmetallic film with very low IR emissivity (12%), realized by constructing alternating multilayered structures consisting of successive MXene functionalized outer layers and continuous GO reinforced inner layers. This nonmetallic film is capable of competing with typical stainless steel (415 MPa, 15.5%), and exhibits remarkable thermal camouflage performance (ΔT = 335 °C), ultrahigh Joule heating capability (350 °C at 2 V), excellent solar-to-thermal conversion efficiency (70.2%), and ultrahigh specific electromagnetic interference shielding effectiveness (83 429 dB cm-1). Impressively, these functionalities can be maintained well after prolonged outdoor aging, and even after undergoing harsh application conditions including strong acid/alkali and boiling water immersion, and cryogenic (-196 °C) temperature.
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Affiliation(s)
- Yuxuan Zhang
- College of Materials Science and Engineering, Henan Key Laboratory of Advanced Nylon Materials and Application, Zhengzhou University, Zhengzhou, 450001, China.
| | - Lei Li
- College of Materials Science and Engineering, Henan Key Laboratory of Advanced Nylon Materials and Application, Zhengzhou University, Zhengzhou, 450001, China.
| | - Yanxia Cao
- College of Materials Science and Engineering, Henan Key Laboratory of Advanced Nylon Materials and Application, Zhengzhou University, Zhengzhou, 450001, China.
| | - Yanyu Yang
- College of Materials Science and Engineering, Henan Key Laboratory of Advanced Nylon Materials and Application, Zhengzhou University, Zhengzhou, 450001, China.
| | - Wanjie Wang
- College of Materials Science and Engineering, Henan Key Laboratory of Advanced Nylon Materials and Application, Zhengzhou University, Zhengzhou, 450001, China.
| | - Jianfeng Wang
- College of Materials Science and Engineering, Henan Key Laboratory of Advanced Nylon Materials and Application, Zhengzhou University, Zhengzhou, 450001, China.
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17
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Gričar E, Radić J, Genorio B, Kolar M. Highly Sensitive and Selective Graphene Nanoribbon Based Enzymatic Glucose Screen-Printed Electrochemical Sensor. SENSORS (BASEL, SWITZERLAND) 2022; 22:9590. [PMID: 36559958 PMCID: PMC9786066 DOI: 10.3390/s22249590] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/15/2022] [Revised: 11/29/2022] [Accepted: 12/04/2022] [Indexed: 06/17/2023]
Abstract
A simple, sensitive, cost effective, and reliable enzymatic glucose biosensor was developed and tested. Nitrogen-doped heat-treated graphene oxide nanoribbons (N-htGONR) were used for modification of commercially available screen-printed carbon electrodes (SPCEs), together with MnO2 and glucose oxidase. The resulting sensors were optimized and used to detect glucose in a wide linear range (0.05-5.0 mM) by a simple amperometric method, where the limit of detection was determined to be 0.008 mM. (lifetime), and reproducibility studies were also carried out and yielded favorable results. The sensor was then tested against potential interfering species present in food and beverage samples before its application to real matrix. Spiked beer samples were analyzed (with glucose recovery between 93.5 and 103.5%) to demonstrate the suitability of the developed sensor towards real food and beverage sample applications.
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Affiliation(s)
- Ema Gričar
- Department of Chemistry and Biochemistry, Faculty of Chemistry and Chemical Technology, University of Ljubljana, Večna pot 113, 1000 Ljubljana, Slovenia
| | - Josip Radić
- Department of Environmental Chemistry, Faculty of Chemistry and Technology, R. Boškovića 35, 21000 Split, Croatia
| | - Boštjan Genorio
- Department of Chemical Engineering and Technical Safety, Faculty of Chemistry and Chemical Technology, University of Ljubljana, Večna pot 113, 1000 Ljubljana, Slovenia
| | - Mitja Kolar
- Department of Chemistry and Biochemistry, Faculty of Chemistry and Chemical Technology, University of Ljubljana, Večna pot 113, 1000 Ljubljana, Slovenia
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18
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Magnetic field assisted synthesis of Janus Fe3C@ Enteromorpha doped graphene aerogels for simultaneous recovery of fresh water and salt in high salinity wastewater. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.122845] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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19
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Recent Advances in Graphene and Graphene‐Based Heterogeneous Nanocatalysts: C−C And C−Y Coupling Reactions in Liquid Phase. ChemistrySelect 2022. [DOI: 10.1002/slct.202202291] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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20
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Alabi A, Aubry C, Zou L. Graphene Oxide-alginate Hydrogel for Drawing Water through an Osmotic Membrane. ACS OMEGA 2022; 7:38337-38346. [PMID: 36340139 PMCID: PMC9631913 DOI: 10.1021/acsomega.2c03138] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/20/2022] [Accepted: 10/06/2022] [Indexed: 06/16/2023]
Abstract
We report the preparation and evaluation of graphene oxide (GO)-enhanced alginate hydrogels for drawing water across an osmotic desalination membrane. GO-incorporated calcium alginate hydrogels (GO-HG) and pure calcium alginate hydrogels (P-HG) were synthesized for this study. Environmental scanning electron microscopy, water contact angle, and water uptake tests showed both samples to be strongly hydrophilic. The synthesized hydrogels demonstrated the ability to successfully and continuously draw water through a selective osmotic membrane in experiments. This was driven by the surface energy gradient-induced negative pressure between the more hydrophilic hydrogel and less hydrophilic membrane surface. The GO-HG was found to draw 21.2% more water than the P-HG, owing to the flexible GO nanosheets, which can be easily incorporated into the hydrogel framework. The GO nanosheets not only offer more hydrophilic functional sites but also enhance the connectivity within the alginate hydrogel framework so as to enhance the water production performance. The average amount of water drawn through the membrane by the GO-HG and the P-HG is 23.4 ± 0.9 g and 19.3 ± 1.8 g, respectively. It was found that no external stimuli were needed as water flows through the hydrogel due to gravitational force. The GO-enhanced alginate hydrogel, combined with the osmotic membrane, is a promising surface energy gradient-driven functional material for water purification and desalination without applying external pressure.
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Affiliation(s)
- Adetunji Alabi
- Department
of Civil Infrastructure and Environmental Engineering, Khalifa University of Science and Technology, 127788Abu Dhabi, United Arab Emirates
| | - Cyril Aubry
- Department
of Research Laboratories Operations, Khalifa
University of Science and Technology, 127788Abu Dhabi, United Arab
Emirates
| | - Linda Zou
- Department
of Civil Infrastructure and Environmental Engineering, Khalifa University of Science and Technology, 127788Abu Dhabi, United Arab Emirates
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21
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Benzait Z, Trabzon L. Graphite Size Effect on Chemical Expansion and Graphene Oxide Properties. ACS OMEGA 2022; 7:37885-37895. [PMID: 36312385 PMCID: PMC9609075 DOI: 10.1021/acsomega.2c05059] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/08/2022] [Accepted: 09/29/2022] [Indexed: 06/16/2023]
Abstract
Does larger graphite flake size always lead to larger and better graphene oxide (GO)? Is there an optimum size to balance between the large building blocks needed and the defects generated during oxidation? In this study, the effect of using four different graphite flake sources on the size, structure, and properties of GO and reduced graphene oxide (rGO) was investigated. GO was mainly prepared by the enhanced synthesis method except for the smallest graphite size, which could not be expanded before oxidation. The effect of the flakes' lateral size and thickness on the expansion volume was also studied. Several characterization techniques were performed throughout this work, and their results provide evidence of how the graphite size changes not only the expansion volume of the chemically expanded graphite (CEG) as well as the final properties of GO or rGO but also the presence of organosulfate impurities, defects, wide size distribution, and the harsh oxidation reaction itself.
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Affiliation(s)
- Zineb Benzait
- Nanoscience
and Nanoengineering Department, Istanbul
Technical University, Maslak, Istanbul 34469, Turkey
| | - Levent Trabzon
- Nanoscience
and Nanoengineering Department, Istanbul
Technical University, Maslak, Istanbul 34469, Turkey
- Department
of Mechanical Engineering, Istanbul Technical
University, Istanbul 34437, Turkey
- MEMS
Research Center, Istanbul Technical University, Istanbul 34437, Turkey
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22
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Tarcan R, Handrea‐Dragan M, Leordean C, Cioban RC, Kiss G, Zaharie‐Butucel D, Farcau C, Vulpoi A, Simon S, Botiz I. Development of polymethylmethacrylate/reduced graphene oxide composite films as thermal interface materials. J Appl Polym Sci 2022. [DOI: 10.1002/app.53238] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Raluca Tarcan
- Interdisciplinary Research Institute in Bio‐Nano‐Sciences Babes‐Bolyai University Cluj‐Napoca Romania
- Faculty of Physics Babes‐Bolyai University Cluj‐Napoca Romania
| | - Madalina Handrea‐Dragan
- Interdisciplinary Research Institute in Bio‐Nano‐Sciences Babes‐Bolyai University Cluj‐Napoca Romania
- Faculty of Physics Babes‐Bolyai University Cluj‐Napoca Romania
| | | | | | | | | | - Cosmin Farcau
- Interdisciplinary Research Institute in Bio‐Nano‐Sciences Babes‐Bolyai University Cluj‐Napoca Romania
- National Institute for Research and Development of Isotopic and Molecular Technologies Cluj‐Napoca Romania
| | - Adriana Vulpoi
- Interdisciplinary Research Institute in Bio‐Nano‐Sciences Babes‐Bolyai University Cluj‐Napoca Romania
| | - Simion Simon
- Interdisciplinary Research Institute in Bio‐Nano‐Sciences Babes‐Bolyai University Cluj‐Napoca Romania
| | - Ioan Botiz
- Interdisciplinary Research Institute in Bio‐Nano‐Sciences Babes‐Bolyai University Cluj‐Napoca Romania
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23
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Mahanta S, Balaji U, Pradhan S, Suman S, Sankaran K. Towards High-quality graphite oxide from graphite – Systemization of the balance in oxidative and mechanical forces for yield enhancement. Chem Eng Sci 2022. [DOI: 10.1016/j.ces.2022.117815] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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24
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Nosan M, Pavko L, Finšgar M, Kolar M, Genorio B. Improving Electroactivity of N-Doped Graphene Derivatives with Electrical Induction Heating. ACS APPLIED ENERGY MATERIALS 2022; 5:9571-9580. [PMID: 36034758 PMCID: PMC9400296 DOI: 10.1021/acsaem.2c01184] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/20/2022] [Accepted: 07/14/2022] [Indexed: 06/15/2023]
Abstract
Graphene derivatives doped with nitrogen have already been identified as active non-noble metal materials for oxygen reduction reaction (ORR) in PEM and alkaline fuel cells. However, an efficient and scalable method to prepare active, stable, and high-surface-area non-noble metal catalysts remains a challenge. Therefore, an efficient, potentially scalable strategy to improve the specific surface area of N-doped graphene derivatives needs to be developed. Here, we report a novel, rapid, and scalable electrical induction heating method for the preparation of N-doped heat-treated graphene oxide derivatives (N-htGOD) with a high specific surface area. The application of the induction heating method has been shown to shorten the reaction time and improve the energy efficiency of the process. The materials synthesized by induction heating exhibited very high specific surface area and showed improved ORR activity compared to the conventional synthesis method. Moreover, we demonstrated that the temperature program of induction heating could fine-tune the concentration of nitrogen functionalities. In particular, the graphitic-N configuration increases with increasing final temperature, in parallel with the increasing ORR activity. The presented results will contribute to the understanding and development of nonmetal N-htGOD for energy storage and conversion applications.
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Affiliation(s)
- Miha Nosan
- Faculty
of Chemistry and Chemical Technology, University
of Ljubljana, Večna pot 113, Ljubljana SI-1000, Slovenia
| | - Luka Pavko
- Faculty
of Chemistry and Chemical Technology, University
of Ljubljana, Večna pot 113, Ljubljana SI-1000, Slovenia
- National
Institute of Chemistry, Hajdrihova 19, Ljubljana SI-1000, Slovenia
| | - Matjaž Finšgar
- Faculty
of Chemistry and Chemical Engineering, University
of Maribor, Smetanova ulica 17, Maribor SI-2000, Slovenia
| | - Mitja Kolar
- Faculty
of Chemistry and Chemical Technology, University
of Ljubljana, Večna pot 113, Ljubljana SI-1000, Slovenia
| | - Boštjan Genorio
- Faculty
of Chemistry and Chemical Technology, University
of Ljubljana, Večna pot 113, Ljubljana SI-1000, Slovenia
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25
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Cifuentes J, Muñoz-Camargo C, Cruz JC. Reduced Graphene Oxide-Extracellular Matrix Scaffolds as a Multifunctional and Highly Biocompatible Nanocomposite for Wound Healing: Insights into Characterization and Electroconductive Potential. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:2857. [PMID: 36014722 PMCID: PMC9415408 DOI: 10.3390/nano12162857] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/18/2022] [Revised: 07/29/2022] [Accepted: 08/10/2022] [Indexed: 06/15/2023]
Abstract
The development of novel regenerative technologies based on the implementation of natural extracellular matrix (ECM), or individual components of ECM combined with multifunctional nanomaterials such as graphene oxide and reduced graphene oxide, has demonstrated remarkable results in wound healing and tissue engineering. However, the synthesis of these nanocomposites involves great challenges related to maintaining the biocompatibility with a simultaneous improvement in their functionalities. Based on that, in this research we developed novel nanoengineered ECM-scaffolds formed by mixing small intestinal submucosa (SIS) with graphene oxide (GO)/reduced graphene oxide (rGO) to improve electrical conductivity while maintaining remarkable biocompatibility. For this, decellularized SIS was combined with GO to form the scaffold precursor for subsequent lyophilization, chemically crosslinking and in situ reduction. The obtained GO and rGO were characterized via Raman spectroscopy, Fourier transform infrared spectroscopy (FTIR), thermogravimetric analysis (TGA), X-ray diffraction (XRD), electrical conductivity testing and atomic force microscopy (AFM). The results confirm the suitable synthesis of GO, the effective reduction to rGO and the significant increase in the electrical conductivity (more than four orders of magnitude higher than bare GO). In addition, the graphene oxide/reduced graphene oxide-SIS scaffolds were characterized via Raman spectroscopy, FTIR, TGA, SEM, porosity assay (higher than 97.5% in all cases) and protein secondary structural analysis. Moreover, the biocompatibility of scaffolds was studied by standardized assays of hemolysis activity (less than 0.5%), platelet activation and deposition, and cell viability in Vero, HaCat and HFF-1 cells (higher than 90% for all evaluated cell lines on the different scaffolds). The obtained results confirm the remarkable biocompatibility, as supported by high hemocompatibility, low cytotoxicity and no negative impact on platelet activation and deposition. Finally, structural characteristics such as pore size and interconnectivity as well as superior cell attachment abilities also corroborated the potential of the developed nanoengineered ECM-scaffolds as a multifunctional nanoplatform for application in regenerative medicine and tissue engineering.
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Sadique M, Yadav S, Ranjan P, Khan R, Khan F, Kumar A, Biswas D. Highly Sensitive Electrochemical Immunosensor Platforms for Dual Detection of SARS-CoV-2 Antigen and Antibody based on Gold Nanoparticle Functionalized Graphene Oxide Nanocomposites. ACS APPLIED BIO MATERIALS 2022; 5:2421-2430. [PMID: 35522141 PMCID: PMC9113004 DOI: 10.1021/acsabm.2c00301] [Citation(s) in RCA: 31] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2022] [Accepted: 04/21/2022] [Indexed: 12/12/2022]
Abstract
In this work, we report a facile synthesis of graphene oxide-gold (GO-Au) nanocomposites by electrodeposition. The fabricated electrochemical immunosensors are utilized for the dual detection of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) antigen and SARS-CoV-2 antibody. The GO-Au nanocomposites has been characterized by UV-vis spectroscopy, X-ray diffraction (XRD), transmission electron microscopy (TEM), cyclic voltammetry (CV), differential pulse voltammetry (DPV), and electrochemical impedance spectroscopy (EIS) for its biosensing properties. The linear detection range of the SARS-CoV-2 antigen immunosensor is 10.0 ag mL-1 to 50.0 ng mL-1, whereas that for the antibody immunosensor ranges from 1.0 fg mL-1 to 1.0 ng mL-1. The calculated limit of detection (LOD) of the SARS-CoV-2 antigen immunosensor is 3.99 ag mL-1, and that for SARS-CoV-2 antibody immunosensor is 1.0 fg mL-1 with high sensitivity. The validation of the immunosensor has also been carried out on patient serum and patient swab samples from COVID-19 patients. The results suggest successful utilization of the immunosensors with a very low detection limit enabling its use in clinical samples. Further work is needed for the standardization of the results and translation in screen-printed electrodes for use in portable commercial applications.
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Affiliation(s)
- Mohd.
Abubakar Sadique
- Industrial
Waste Utilization, Nano and Biomaterials, CSIR - Advanced Materials and Processes Research Institute (AMPRI), Hoshangabad Road, Bhopal 462026, India
- Academy
of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Shalu Yadav
- Industrial
Waste Utilization, Nano and Biomaterials, CSIR - Advanced Materials and Processes Research Institute (AMPRI), Hoshangabad Road, Bhopal 462026, India
- Academy
of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Pushpesh Ranjan
- Industrial
Waste Utilization, Nano and Biomaterials, CSIR - Advanced Materials and Processes Research Institute (AMPRI), Hoshangabad Road, Bhopal 462026, India
- Academy
of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Raju Khan
- Industrial
Waste Utilization, Nano and Biomaterials, CSIR - Advanced Materials and Processes Research Institute (AMPRI), Hoshangabad Road, Bhopal 462026, India
- Academy
of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Firoz Khan
- Department
of Biochemistry, All India Institute of
Medical Sciences (AIIMS), Bhopal 462020, India
| | - Ashok Kumar
- Department
of Biochemistry, All India Institute of
Medical Sciences (AIIMS), Bhopal 462020, India
| | - Debasis Biswas
- Department
of Microbiology, All India Institute of
Medical Sciences (AIIMS), Bhopal 462020, India
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27
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Ranjan P, Abubakar Sadique M, Yadav S, Khan R. An Electrochemical Immunosensor Based on Gold-Graphene Oxide Nanocomposites with Ionic Liquid for Detecting the Breast Cancer CD44 Biomarker. ACS APPLIED MATERIALS & INTERFACES 2022; 14:20802-20812. [PMID: 35482593 DOI: 10.1021/acsami.2c03905] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
We develop a highly sensitive electrochemical immunosensor for the detection of a cluster of differentiation-44 (CD44) antigen, a breast cancer biomarker. The hybrid nanocomposite consists of graphene oxide, ionic liquid, and gold nanoparticles (GO-IL-AuNPs) immobilized on a glassy carbon electrode. GO favors the immobilization of antibodies because of the availability of oxygen functionalities. However, 1-butyl-3-methylimidazolium tetrafluoroborate (BMIM.BF4) and AuNPs facilitate electron transfer and increase the effective surface area, which enhances the performance of the immunosensor. Furthermore, UV-visible, fourier transform infrared and Raman spectroscopy, X-ray diffraction, field emission scanning electron microscopy, transmission electron microscopy, voltammetry, and electrochemical impedance spectroscopy characterization techniques have been employed to investigate the structural and chemical properties of the nanomaterials. The quantitative detection of CD44 antigen has been accomplished via differential pulse voltammetry and EIS detection techniques. It has been quantified that the proposed immunosensor offers excellent detection ability in both phosphate-buffered saline (PBS) and serum samples. Under optimum conditions, the linear detection range of the immunosensor for CD44 antigen is 5.0 fg mL-1 to 50.0 μg mL-1 and the limit of detection is 2.0 and 1.90 fg mL-1 as observed via DPV and EIS, respectively, in PBS. Additionally, the immunosensor has high sensitivity and specificity and can be successfully applied for the detection of CD44 antigen in clinical samples.
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Affiliation(s)
- Pushpesh Ranjan
- CSIR-Advanced Materials and Processes Research Institute (AMPRI), Hoshangabad Road, Bhopal 462026, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Mohd Abubakar Sadique
- CSIR-Advanced Materials and Processes Research Institute (AMPRI), Hoshangabad Road, Bhopal 462026, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Shalu Yadav
- CSIR-Advanced Materials and Processes Research Institute (AMPRI), Hoshangabad Road, Bhopal 462026, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Raju Khan
- CSIR-Advanced Materials and Processes Research Institute (AMPRI), Hoshangabad Road, Bhopal 462026, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
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28
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Omran B, Baek KH. Graphene-derived antibacterial nanocomposites for water disinfection: Current and future perspectives. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2022; 298:118836. [PMID: 35032599 DOI: 10.1016/j.envpol.2022.118836] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/04/2021] [Revised: 12/29/2021] [Accepted: 01/08/2022] [Indexed: 05/11/2023]
Abstract
Antimicrobial nanomaterials provide numerous opportunities for the synthesis of next-generation sustainable water disinfectants. Using the keywords graphene and water disinfection and graphene antibacterial activity, a detailed search of the Scopus database yielded 198 and 1433 studies on using graphene for water disinfection applications and graphene antibacterial activity in the last ten years, respectively. Graphene family nanomaterials (GFNs) have emerged as effective antibacterial agents. The current innovations in graphene-, graphene oxide (GO)-, reduced graphene oxide (rGO)-, and graphene quantum dot (GQD)-based nanocomposites for water disinfection, including their functionalization with semiconductor photocatalysts and metal and metal oxide nanoparticles, have been thoroughly discussed in this review. Furthermore, their novel application in the fabrication of 3D porous hydrogels, thin films, and membranes has been emphasized. The physicochemical and structural properties affecting their antibacterial efficiency, such as sheet size, layer number, shape, edges, smoothness/roughness, arrangement mode, aggregation, dispersibility, and surface functionalization have been highlighted. The various mechanisms involved in GFN antibacterial action have been reviewed, including the mechanisms of membrane stress, ROS-dependent and -independent oxidative stress, cell wrapping/trapping, charge transfer, and interaction with cellular components. For safe applications, the potential biosafety and biocompatibility of GFNs in aquatic environments are emphasized. Finally, the current limitations and future perspectives are discussed. This review may provide ideas for developing efficient and practical solutions using graphene-, GO-, rGO-, and GQD-based nanocomposites in water disinfection by rationally employing their unique properties.
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Affiliation(s)
- Basma Omran
- Department of Biotechnology, Yeungnam University, Gyeongbuk, Gyeongsan, 38541, Republic of Korea; Department of Processes Design & Development, Egyptian Petroleum Research Institute (EPRI), Nasr City, Cairo PO, 11727, Egypt
| | - Kwang-Hyun Baek
- Department of Biotechnology, Yeungnam University, Gyeongbuk, Gyeongsan, 38541, Republic of Korea.
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29
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Xiong Z, Dai L, Wang Y, Qu K, Xia Y, Lei L, Huang K, Xu Z. Two-dimensional sub-nanometer confinement channels enabled by functional carbon dots for ultra-permeable alcohol dehydration. J Memb Sci 2022. [DOI: 10.1016/j.memsci.2021.120069] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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30
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High Performance of PVA Nanocomposite Reinforced by Janus-like Asymmetrically Oxidized Graphene: Synergetic Effect of H-bonding Interaction and Interfacial Crystallization. CHINESE JOURNAL OF POLYMER SCIENCE 2022. [DOI: 10.1007/s10118-022-2664-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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31
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McCoy TM, Armstrong AJ, Moore JE, Holt SA, Tabor RF, Routh AF. Spontaneous surface adsorption of aqueous graphene oxide by synergy with surfactants. Phys Chem Chem Phys 2022; 24:797-806. [PMID: 34927644 DOI: 10.1039/d1cp04317j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The spontaneous adsorption of graphene oxide (GO) sheets at the air-water interface is explored using X-ray reflectivity (XRR) measurements. As a pure aqueous dispersion, GO sheets do not spontaneously adsorb at the air-water interface due to their high negative surface potential (-60 mV) and hydrophilic functionality. However, when incorporated with surfactant molecules at optimal ratios and loadings, GO sheets can spontaneously be driven to the surface. It is hypothesised that surfactant molecules experience favourable attractive interactions with the surfaces of GO sheets, resulting in co-assembly that serves to render the sheets surface active. The GO/surfactant composites then collectively adsorb at the air-water interface, with XRR analysis suggesting an interfacial structure comprising surfactant tailgroups in air and GO/surfactant headgroups in water for a combined thickness of 30-40 Å, depending on the surfactant used. Addition of too much surfactant appears to inhibit GO surface adsorption by saturating the interface, and low loadings of GO/surfactant composites (even at optimal ratios) do not show significant adsorption indicating a partitioning effect. Lastly, surfactant chemistry is also a key factor dictating adsorption capacity of GO. The zwitterionic surfactant oleyl amidopropyl betaine causes marked increases in GO surface activity even at very low concentrations (≤0.2 mM), whereas non-ionic surfactants such as Triton X-100 and hexaethyleneglycol monododecyl ether require higher concentrations (ca. 1 mM) in order to impart spontaneous adsorption of the sheets. Anionic surfactants do not enhance GO surface activity presumably due to like-charge repulsions that prevent co-assembly. This work provides useful insight into the synergy between GO sheets and molecular amphiphiles in aqueous systems for enhancing the surface activity of GO, and can be used to inform system formulation for developing water-friendly, surface active composites based around atomically thin materials.
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Affiliation(s)
- Thomas M McCoy
- Department of Chemical Engineering and Biotechnology and BP Institute, University of Cambridge, CB3 0EZ, UK. .,School of Chemistry, Monash University, Clayton 3800, VIC, Australia
| | - Alexander J Armstrong
- Department of Chemical Engineering and Biotechnology and BP Institute, University of Cambridge, CB3 0EZ, UK.
| | - Jackson E Moore
- School of Chemistry, Monash University, Clayton 3800, VIC, Australia
| | - Stephen A Holt
- Australian Centre for Neutron Scattering, ANSTO, Lucas, Heights 2234, NSW, Australia
| | - Rico F Tabor
- School of Chemistry, Monash University, Clayton 3800, VIC, Australia
| | - Alexander F Routh
- Department of Chemical Engineering and Biotechnology and BP Institute, University of Cambridge, CB3 0EZ, UK.
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32
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Fe3O4-carbon spheres core-shell supported palladium nanoparticles: A robust and recyclable catalyst for suzuki coupling reaction. Chin J Chem Eng 2022. [DOI: 10.1016/j.cjche.2021.11.024] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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33
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Gričar E, Kalcher K, Genorio B, Kolar M. Highly Sensitive Amperometric Detection of Hydrogen Peroxide in Saliva Based on N-Doped Graphene Nanoribbons and MnO 2 Modified Carbon Paste Electrodes. SENSORS 2021; 21:s21248301. [PMID: 34960395 PMCID: PMC8707399 DOI: 10.3390/s21248301] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/23/2021] [Revised: 12/06/2021] [Accepted: 12/10/2021] [Indexed: 11/27/2022]
Abstract
Four different graphene-based nanomaterials (htGO, N-htGO, htGONR, and N-htGONR) were synthesized, characterized, and used as a modifier of carbon paste electrode (CPE) in order to produce a reliable, precise, and highly sensitive non-enzymatic amperometric hydrogen peroxide sensor for complex matrices. CPE, with their robustness, reliability, and ease of modification, present a convenient starting point for the development of new sensors. Modification of CPE was optimized by systematically changing the type and concentration of materials in the modifier and studying the prepared electrode surface by cyclic voltammetry. N-htGONR in combination with manganese dioxide (1:1 ratio) proved to be the most appropriate material for detection of hydrogen peroxide in pharmaceutical and saliva matrices. The developed sensor exhibited a wide linear range (1.0–300 µM) and an excellent limit of detection (0.08 µM) and reproducibility, as well as high sensitivity and stability. The sensor was successfully applied to real sample analysis, where the recovery values for a commercially obtained pharmaceutical product were between 94.3% and 98.0%. Saliva samples of a user of the pharmaceutical product were also successfully analyzed.
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Affiliation(s)
- Ema Gričar
- Department of Chemistry and Biochemistry, Faculty of Chemistry and Chemical Technology, University of Ljubljana, Večna pot 113, 1000 Ljubljana, Slovenia;
| | - Kurt Kalcher
- Department of Analytical Chemistry, Insistute of Chemistry, University of Graz, Universitätsplatz 1, 8020 Graz, Austria;
| | - Boštjan Genorio
- Department of Chemical Engineering and Technical Safety, Faculty of Chemistry and Chemical Technology, University of Ljubljana, Večna pot 113, 1000 Ljubljana, Slovenia
- Correspondence: (B.G.); (M.K.)
| | - Mitja Kolar
- Department of Chemistry and Biochemistry, Faculty of Chemistry and Chemical Technology, University of Ljubljana, Večna pot 113, 1000 Ljubljana, Slovenia;
- Correspondence: (B.G.); (M.K.)
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34
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Roy O, Jana A, Pratihar B, Saha DS, De S. Graphene oxide wrapped Mix-valent cobalt phosphate hollow nanotubes as oxygen evolution catalyst with low overpotential. J Colloid Interface Sci 2021; 610:592-600. [PMID: 34848052 DOI: 10.1016/j.jcis.2021.11.112] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2021] [Revised: 11/03/2021] [Accepted: 11/19/2021] [Indexed: 11/26/2022]
Abstract
Development of an efficient, stable and inexpensive catalyst for oxygen evolution reaction (OER) is critical to electrochemical water splitting. In this regard, a precious-metal free electrocatalyst has been synthesized employing a hydrothermal route. The prepared graphene oxide wrapped cobalt phosphate nanotubes deposited on Ni foam electrode shows a low overpotential of 234 mV at a current density of 10 mA/cm2 for OER in 1(M) KOH, lower than a benchmarking electrocatalyst IrO2 at the same current density. The performance figures clearly defy the volcano limitations. The mixed-valency induced delocalization of charge satisfies Sabatier Principle for ideal catalysts and graphene oxide ensures improved charge transfer. Moreover, the designed electrocatalyst performs efficiently even on prolonged use under mass transfer limitation conditions.
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Affiliation(s)
- Omkar Roy
- Department of Chemical Engineering, Indian Institute of Technology Kharagpur, Kharagpur, West Bengal, 721302, India
| | - Animesh Jana
- Department of Chemical Engineering, Indian Institute of Technology Kharagpur, Kharagpur, West Bengal, 721302, India
| | - Bitan Pratihar
- Department of Chemical Engineering, Indian Institute of Technology Kharagpur, Kharagpur, West Bengal, 721302, India
| | - Dhriti S Saha
- Department of Chemical Engineering, Indian Institute of Technology Kharagpur, Kharagpur, West Bengal, 721302, India
| | - Sirshendu De
- Department of Chemical Engineering, Indian Institute of Technology Kharagpur, Kharagpur, West Bengal, 721302, India.
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35
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Liu D, Wang J, Gao X, Wang H, Ren H. Graphene oxide grafted with polydimethylsiloxane modified polyurethane. NANO SELECT 2021. [DOI: 10.1002/nano.202100063] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Affiliation(s)
- Danian Liu
- College of Materials Science and Technology Nanjing University of Aeronautics and Astronautics Nanjing PR China
| | - Jingwen Wang
- College of Materials Science and Technology Nanjing University of Aeronautics and Astronautics Nanjing PR China
| | - Xinhua Gao
- College of Materials Science and Technology Nanjing University of Aeronautics and Astronautics Nanjing PR China
| | - Houqing Wang
- College of Materials Science and Technology Nanjing University of Aeronautics and Astronautics Nanjing PR China
| | - Hua Ren
- Department of Materials Science and Engineering Nanjing University Nanjing PR China
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36
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Du C, Zhang Z, Tan S, Yu G, Chen H, Zhou L, Yu L, Su Y, Zhang Y, Deng F, Wang S. Construction of Z-scheme g-C 3N 4 / MnO 2 /GO ternary photocatalyst with enhanced photodegradation ability of tetracycline hydrochloride under visible light radiation. ENVIRONMENTAL RESEARCH 2021; 200:111427. [PMID: 34062202 DOI: 10.1016/j.envres.2021.111427] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/13/2021] [Revised: 05/17/2021] [Accepted: 05/24/2021] [Indexed: 05/27/2023]
Abstract
A facile wet-chemical method was adopted to synthesize g-C3N4/MnO2/GO heterojunction photocatalyst for visible-light photodegradation of tetracycline hydrochloride (TC). The addition of MnO2 and GO increased the absorption of visible light and the specific surface area of the photocatalyst. The results of photoluminescence, electrochemical impedance spectroscopy, and photocurrent response indicated that CMG-10 had the lowest electron-hole recombination probability, which was beneficial for the photocatalytic reaction. The ternary photocatalyst exhibited enhanced photoelectric performance and superior photocatalytic activity with 91.4% removal of TC (10 mg/L) under a mere 60 min visible light illumination, which showed enhanced photocatalytic degradation when compared with binary (CM, 77.95%; CG, 78.83%) and single (C3N4, 55.5%; MnO2, 36.41%) photocatalysts. A pH of 6 was optimal for the CMG-10 photocatalytic degradation of TC, and the optimal photocatalyst dosage was 0.5 g/L. Common coexisting ions influenced the removal of TC by influencing the production of active species. The catalyst is stable and reusable with only a 10% reduction in removal efficiency after four cycles. According to the active species analysis, the Z-scheme mechanism was a charge transfer behavior in the composite photocatalyst, which could prevent the recombination of photogenerated carriers. This study presents a photocatalytic approach to the effective removal of TC from water bodies, which provides practical implications to advance the use of photocatalytic technology in the restoration of aqueous environmental pollution.
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Affiliation(s)
- Chunyan Du
- School of Hydraulic Engineering, Changsha University of Science & Technology, Changsha, 410114, PR China; Key Laboratory of Dongting Lake Aquatic Eco-Environmental Control and Restoration of Hunan Province, Changsha, 410114, PR China; Engineering and Technical Center of Hunan Provincial Environmental Protection for River-Lake Dredging Pollution Control, Changsha, 410114, PR China
| | - Zhuo Zhang
- School of Hydraulic Engineering, Changsha University of Science & Technology, Changsha, 410114, PR China
| | - Shiyang Tan
- School of Hydraulic Engineering, Changsha University of Science & Technology, Changsha, 410114, PR China
| | - Guanlong Yu
- School of Hydraulic Engineering, Changsha University of Science & Technology, Changsha, 410114, PR China; Key Laboratory of Dongting Lake Aquatic Eco-Environmental Control and Restoration of Hunan Province, Changsha, 410114, PR China; Engineering and Technical Center of Hunan Provincial Environmental Protection for River-Lake Dredging Pollution Control, Changsha, 410114, PR China.
| | - Hong Chen
- School of Hydraulic Engineering, Changsha University of Science & Technology, Changsha, 410114, PR China; Key Laboratory of Dongting Lake Aquatic Eco-Environmental Control and Restoration of Hunan Province, Changsha, 410114, PR China; Engineering and Technical Center of Hunan Provincial Environmental Protection for River-Lake Dredging Pollution Control, Changsha, 410114, PR China
| | - Lu Zhou
- School of Hydraulic Engineering, Changsha University of Science & Technology, Changsha, 410114, PR China; Key Laboratory of Dongting Lake Aquatic Eco-Environmental Control and Restoration of Hunan Province, Changsha, 410114, PR China; Engineering and Technical Center of Hunan Provincial Environmental Protection for River-Lake Dredging Pollution Control, Changsha, 410114, PR China
| | - Lie Yu
- School of Hydraulic Engineering, Changsha University of Science & Technology, Changsha, 410114, PR China; Key Laboratory of Dongting Lake Aquatic Eco-Environmental Control and Restoration of Hunan Province, Changsha, 410114, PR China; Engineering and Technical Center of Hunan Provincial Environmental Protection for River-Lake Dredging Pollution Control, Changsha, 410114, PR China
| | - Yihai Su
- School of Hydraulic Engineering, Changsha University of Science & Technology, Changsha, 410114, PR China
| | - Yin Zhang
- School of Hydraulic Engineering, Changsha University of Science & Technology, Changsha, 410114, PR China
| | - Fangfang Deng
- School of Hydraulic Engineering, Changsha University of Science & Technology, Changsha, 410114, PR China
| | - Shitao Wang
- School of Hydraulic Engineering, Changsha University of Science & Technology, Changsha, 410114, PR China
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Shang J, Guo Y, He D, Qu W, Tang Y, Zhou L, Zhu R. A novel graphene oxide-dicationic ionic liquid composite for Cr(VI) adsorption from aqueous solutions. JOURNAL OF HAZARDOUS MATERIALS 2021; 416:125706. [PMID: 33813290 DOI: 10.1016/j.jhazmat.2021.125706] [Citation(s) in RCA: 41] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/11/2020] [Revised: 03/12/2021] [Accepted: 03/18/2021] [Indexed: 06/12/2023]
Abstract
A novel graphene oxide-dicationic ionic liquid composite (GO-DIL) was prepared by modifying graphene oxide (GO) with a dicationic ionic liquid (DIL), 3,3'-(butane-1,4-diyl) bis (1-methyl-1H-imidazol-3-ium) chloride ([C4(MIM)2]Cl2). GO and GO-DIL were characterized by SEM, BET, FTIR, and XPS, and the materials were used for Cr(VI) adsorption. Batch adsorption studies showed that adsorption reached equilibrium within 40 min, and the optimal pH was 3, where the electrostatic attraction between GO-DIL and Cr(VI) was maximized. The maximum theoretical Cr(VI) adsorption capacity (qm) was 271.08 mg g-1, and qm remained above 228.00 mg g-1 after five cycles. The adsorption data were fitted well by both the pseudo-first-order kinetic model and the Langmuir model. Furthermore, thermodynamics calculations revealed that adsorption was a spontaneous endothermic process. Importantly, electrostatic attraction between Cr(VI) and the protonated imidazole N+ of GO-DIL played a critical role in Cr(VI) adsorption, and Cr(VI) was reduced to Cr(III). Thus, GO-DIL is predicted to be an effective adsorbent for Cr(VI) and other heavy metal ions in wastewater.
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Affiliation(s)
- Jun Shang
- College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China
| | - Yanni Guo
- College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China
| | - Deliang He
- College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China.
| | - Wei Qu
- College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China
| | - Yining Tang
- College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China
| | - Lei Zhou
- College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China
| | - Rilong Zhu
- College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China
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38
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Abstract
Graphene oxide (GO) has been widely utilized as the precursor of graphene (GR) to fabricate GR-based hybrid photocatalysts for solar-to-chemical energy conversion. However, until now, the properties and roles that GO played in heterogeneous photocatalysis have remained relatively elusive. In this Review, we start with a brief discussion of synthesis and structure of GO. Then, the photocatalysis-related properties of GO, including electrical conductivity, surface chemistry, dispersibility, and semiconductor properties, are concisely summarized. In particular, we have highlighted the fundamental multifaceted roles of GO in heterogeneous photocatalysis, which contain the precursor of GR, cross-linked framework for constructing aerogel photocatalyst, macromolecular surfactant, two-dimensional growth template, and photocatalyst by itself. Furthermore, the future prospects and remaining challenges on developing effective GO-derived hybrid photocatalysts are presented, which is expected to inspire further research into this promising research domain.
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Affiliation(s)
- Kang-Qiang Lu
- College
of Materials, Metallurgical and Chemistry, Jiangxi University of Science and Technology, Ganzhou 341000, P. R. China,College
of Chemistry, State Key Laboratory of Photocatalysis on Energy and
Environment, Fuzhou University, Fuzhou 350116, P. R. China,
| | - Yue-Hua Li
- College
of Chemistry, State Key Laboratory of Photocatalysis on Energy and
Environment, Fuzhou University, Fuzhou 350116, P. R. China
| | - Zi-Rong Tang
- College
of Chemistry, State Key Laboratory of Photocatalysis on Energy and
Environment, Fuzhou University, Fuzhou 350116, P. R. China
| | - Yi-Jun Xu
- College
of Chemistry, State Key Laboratory of Photocatalysis on Energy and
Environment, Fuzhou University, Fuzhou 350116, P. R. China,
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Cakal Sarac E, Haghighi Poudeh L, Berktas I, Saner Okan B. Scalable fabrication of high‐performance graphene/polyamide 66 nanocomposites with controllable surface chemistry by melt compounding. J Appl Polym Sci 2021. [DOI: 10.1002/app.49972] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Elcin Cakal Sarac
- Kordsa Teknik Tekstil A.S. Teknopark Istanbul Istanbul Pendik Turkey
| | - Leila Haghighi Poudeh
- Sabanci University Integrated Manufacturing Technologies Research and Application Center & Composite Technologies Center of Excellence Teknopark Istanbul Istanbul Pendik Turkey
| | - Ilayda Berktas
- Sabanci University Integrated Manufacturing Technologies Research and Application Center & Composite Technologies Center of Excellence Teknopark Istanbul Istanbul Pendik Turkey
| | - Burcu Saner Okan
- Sabanci University Integrated Manufacturing Technologies Research and Application Center & Composite Technologies Center of Excellence Teknopark Istanbul Istanbul Pendik Turkey
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40
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Gorgieva S, Osmić A, Hribernik S, Božič M, Svete J, Hacker V, Wolf S, Genorio B. Efficient Chitosan/Nitrogen-Doped Reduced Graphene Oxide Composite Membranes for Direct Alkaline Ethanol Fuel Cells. Int J Mol Sci 2021; 22:1740. [PMID: 33572312 PMCID: PMC7916145 DOI: 10.3390/ijms22041740] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2021] [Revised: 02/02/2021] [Accepted: 02/03/2021] [Indexed: 01/28/2023] Open
Abstract
Herein, we prepared a series of nanocomposite membranes based on chitosan (CS) and three compositionally and structurally different N-doped graphene derivatives. Two-dimensional (2D) and quasi 1D N-doped reduced graphene oxides (N-rGO) and nanoribbons (N-rGONRs), as well as 3D porous N-doped graphitic polyenaminone particles (N-pEAO), were synthesized and characterized fully to confirm their graphitic structure, morphology, and nitrogen (pyridinic, pyrrolic, and quaternary or graphitic) group contents. The largest (0.07%) loading of N-doped graphene derivatives impacted the morphology of the CS membrane significantly, reducing the crystallinity, tensile properties, and the KOH uptake, and increasing (by almost 10-fold) the ethanol permeability. Within direct alkaline ethanol test cells, it was found that CS/N rGONRs (0.07 %) membrane (Pmax. = 3.7 mWcm-2) outperformed the pristine CS membrane significantly (Pmax. = 2.2 mWcm-2), suggesting the potential of the newly proposed membranes for application in direct ethanol fuel cells.
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Affiliation(s)
- Selestina Gorgieva
- Faculty of Mechanical Engineering, University of Maribor, Smetanova 17, 2000 Maribor, Slovenia; (S.G.); (S.H.)
- Faculty of Electrical Engineering and Computer Science, University of Maribor, Koroška cesta 46, 2000 Maribor, Slovenia;
| | - Azra Osmić
- Faculty of Electrical Engineering and Computer Science, University of Maribor, Koroška cesta 46, 2000 Maribor, Slovenia;
| | - Silvo Hribernik
- Faculty of Mechanical Engineering, University of Maribor, Smetanova 17, 2000 Maribor, Slovenia; (S.G.); (S.H.)
- Faculty of Electrical Engineering and Computer Science, University of Maribor, Koroška cesta 46, 2000 Maribor, Slovenia;
| | - Mojca Božič
- Dravske Elektrarne Maribor d.o.o., Obrežna ulica 170, 2000 Maribor, Slovenia;
| | - Jurij Svete
- Faculty of Chemistry and Chemical Technology, University of Ljubljana, Večna pot 113, 1000 Ljubljana, Slovenia;
| | - Viktor Hacker
- Institute of Chemical Engineering and Environmental Technology, Graz University of Technology, Stremayrgasse 9, 8010 Graz, Austria; (V.H.); (S.W.)
| | - Sigrid Wolf
- Institute of Chemical Engineering and Environmental Technology, Graz University of Technology, Stremayrgasse 9, 8010 Graz, Austria; (V.H.); (S.W.)
| | - Boštjan Genorio
- Faculty of Chemistry and Chemical Technology, University of Ljubljana, Večna pot 113, 1000 Ljubljana, Slovenia;
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41
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Hydrogen generation and hydrogenation reactions efficiently mediated by a thin film of reduced graphene oxide-grafted with carboxymethyl chitosan and Ag nanoparticles. J Colloid Interface Sci 2021; 583:626-641. [DOI: 10.1016/j.jcis.2020.09.033] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2020] [Revised: 08/24/2020] [Accepted: 09/11/2020] [Indexed: 01/12/2023]
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42
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Shi F, Sun J, Wang J, Liu M, Yan Z, Zhu B, Li Y, Cao X. MXene versus graphene oxide: Investigation on the effects of 2D nanosheets in mixed matrix membranes for CO2 separation. J Memb Sci 2021. [DOI: 10.1016/j.memsci.2020.118850] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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43
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Benzait Z, Chen P, Trabzon L. Enhanced synthesis method of graphene oxide. NANOSCALE ADVANCES 2021; 3:223-230. [PMID: 36131868 PMCID: PMC9419793 DOI: 10.1039/d0na00706d] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/24/2020] [Accepted: 11/07/2020] [Indexed: 06/14/2023]
Abstract
The synthesis of high quality graphene oxide (GO) in large quantities is a matter of great importance for both research institutes and industries. In the present study, we report an improvement in the so-called "improved method" reported by Tour et al., which had already improved the very famous "Hummers method" to a certain extent. Through an important pre-treatment step, GO with larger sheets, better structural integrity, and a higher yield of monolayers was obtained. Furthermore, both the oxidation time and temperature were reduced without reducing the degree of high oxidation. Even though a low temperature is known to be a prerequisite for obtaining less defective GO in its reduced form (rGO), we found through this research that the pre-treatment step minimizes the negative effect of the moderate temperature (35 °C) needed to enhance the reaction rate, without altering the basal graphitic plane, which was also preserved at a low temperature (<10 °C). Both the mechanical and electrical properties confirm the enhancement of the GO quality obtained through improving the improved method, and make the rGO films produced attractive for practical applications.
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Affiliation(s)
- Zineb Benzait
- Nanosicence and Nanoengineering Department, Istanbul Technical University Maslak Istanbul 34469 Turkey
| | - Pengwan Chen
- School of Mechatronic Engineering, Beijing Institute of Technology Beijing 100081 China
| | - Levent Trabzon
- Nanosicence and Nanoengineering Department, Istanbul Technical University Maslak Istanbul 34469 Turkey
- Department of Mechanical Engineering, Istanbul Technical University Istanbul 34437 Turkey
- Nanotechnology Research and Application Center - ITUnano, Istanbul Technical University Istanbul 34437 Turkey
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44
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Simply patterned reduced graphene oxide as an effective biosensor platform for glucose determination. J Electroanal Chem (Lausanne) 2021. [DOI: 10.1016/j.jelechem.2020.114801] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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45
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Pohan NA, Wahid MH, Zainal Z, Ibrahim NA. Pickering-emulsion-templated synthesis of 3D hollow graphene as an efficient oil absorbent. RSC Adv 2021; 11:3963-3971. [PMID: 35424351 PMCID: PMC8694193 DOI: 10.1039/d0ra09265g] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2020] [Revised: 09/17/2021] [Accepted: 12/16/2020] [Indexed: 01/15/2023] Open
Abstract
The preparation of graphene in three-dimensional mode represents an alternative method to maintain its characteristically large surface area, which, under normal circumstances, is diminished by the restacking of the individual sheets.
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Affiliation(s)
- Nurul Aqilah Pohan
- Department of Chemistry, Faculty of Science, Universiti Putra Malaysia, 43400 Serdang, Selangor, Malaysia
| | - Mohd Haniff Wahid
- Department of Chemistry, Faculty of Science, Universiti Putra Malaysia, 43400 Serdang, Selangor, Malaysia
| | - Zulkarnain Zainal
- Department of Chemistry, Faculty of Science, Universiti Putra Malaysia, 43400 Serdang, Selangor, Malaysia
- Material Synthesis Laboratory, Institute of Advanced Technology, Universiti Putra Malaysia, 43400 Serdang, Selangor, Malaysia
| | - Nor Azowa Ibrahim
- Department of Chemistry, Faculty of Science, Universiti Putra Malaysia, 43400 Serdang, Selangor, Malaysia
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46
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Kumar S, Kumar S, Sengar M, Kumari P. Gold-carbonaceous materials based heterostructures for gas sensing applications. RSC Adv 2021. [DOI: 10.1039/d1ra00361e] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Abstract
The carbon nanostructures such as carbon nanotubes and graphene decorated with gold nanoparticles exhibit promising gas sensing applications with enhanced sensitivity.
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Affiliation(s)
- Sanjay Kumar
- Department of Chemistry
- Deshbandhu College
- University of Delhi
- New Delhi-110019
- India
| | - Suneel Kumar
- Department of Chemistry
- Government Degree College Chamba
- India
| | - Manisha Sengar
- Department of Zoology
- Deshbandhu College
- University of Delhi
- New Delhi
- India
| | - Pratibha Kumari
- Department of Chemistry
- Deshbandhu College
- University of Delhi
- New Delhi-110019
- India
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47
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Dummy-surface molecularly imprinted polymers based on magnetic graphene oxide for selective extraction and quantification of pyrethroids pesticides in fruit juices. Microchem J 2020. [DOI: 10.1016/j.microc.2020.105411] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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48
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López-Diaz D, Merchán MD, Velázquez MM. The behavior of graphene oxide trapped at the air water interface. Adv Colloid Interface Sci 2020; 286:102312. [PMID: 33166724 DOI: 10.1016/j.cis.2020.102312] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2020] [Revised: 10/28/2020] [Accepted: 10/29/2020] [Indexed: 02/02/2023]
Abstract
Graphene oxide is a derivate of graphene obtained by oxidation of graphite and other carbonaceous materials. The more accepted structure consists in carbonyl and carboxyl groups located at the edge of the graphene network and hydroxyl and epoxy groups attached to the basal plane. The percentage of O-groups depends on the synthesis route and the material used as carbon source. In addition, highly oxidized fragments, called oxidative debris, OD, are produced during the oxidation process. These fragments are adsorbed onto the graphene oxide network and can be removed by alkaline washing. The purified material has lower O/C ratio than graphene oxide and its properties are also quite different. Due to its structure, graphene oxide can be adsorbed at the air-water interface of the aqueous solution by diffusion, Gibbs monolayers, or by spreading on a clean water subphase resulting in a Langmuir film. This review is intended to provide information on the importance of controlling the chemical composition, structure, size, and oxidative debris, on the manufacture of graphene oxide films. To this end the review shows the influence of the synthesis route and the starting material on the structure of graphene oxide and analyzes several examples of the behavior and properties of films prepared with different types of graphene oxides. The great variability of behaviors of graphene oxide films caused by the different structure of this material provides a great opportunity to fine-tune the properties of films according to the needs of different applications.
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Sroysee W, Suktha P, Kongsawatvoragul K, Vadivel S, Sawangphruk M. Graphene Aerogels with Ultrahigh Pore Volume for Organic Dye Adsorption and High-Energy Lithium Batteries. Ind Eng Chem Res 2020. [DOI: 10.1021/acs.iecr.0c04026] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Wongduan Sroysee
- Department of Chemical and Biomolecular Engineering, School of Energy Science and Engineering, Vidyasirimedhi Institute of Science and Technology, Rayong 21210, Thailand
- Centre of Excellence for Energy Storage Technology, Vidyasirimedhi Institute of Science and Technology, Rayong 21210, Thailand
| | - Phansiri Suktha
- Department of Chemical and Biomolecular Engineering, School of Energy Science and Engineering, Vidyasirimedhi Institute of Science and Technology, Rayong 21210, Thailand
- Centre of Excellence for Energy Storage Technology, Vidyasirimedhi Institute of Science and Technology, Rayong 21210, Thailand
| | - Ketsuda Kongsawatvoragul
- Department of Chemical and Biomolecular Engineering, School of Energy Science and Engineering, Vidyasirimedhi Institute of Science and Technology, Rayong 21210, Thailand
- Centre of Excellence for Energy Storage Technology, Vidyasirimedhi Institute of Science and Technology, Rayong 21210, Thailand
| | - Selvamani Vadivel
- Department of Chemical and Biomolecular Engineering, School of Energy Science and Engineering, Vidyasirimedhi Institute of Science and Technology, Rayong 21210, Thailand
- Centre of Excellence for Energy Storage Technology, Vidyasirimedhi Institute of Science and Technology, Rayong 21210, Thailand
| | - Montree Sawangphruk
- Department of Chemical and Biomolecular Engineering, School of Energy Science and Engineering, Vidyasirimedhi Institute of Science and Technology, Rayong 21210, Thailand
- Centre of Excellence for Energy Storage Technology, Vidyasirimedhi Institute of Science and Technology, Rayong 21210, Thailand
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50
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Zhang ZT, Dong RY, Qiao DS, Cao BY. Tuning the thermal conductivity of nanoparticle suspensions by electric field. NANOTECHNOLOGY 2020; 31:465403. [PMID: 32857731 DOI: 10.1088/1361-6528/abae30] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Active thermal management is essential for the operation of modern technologies like electronic circuits and spacecraft systems to deal with the complex control and conversion of thermal energy. One basic requirement for the materials is its tunable and reversible thermal properties. Here, we try to provide a systematic investigation of the thermal smart materials composed of low-dimensional solid particles suspended in liquid media, whose structures and properties can be tuned by external field. A two-step theoretical model, which takes into account the effects from particle aggregation and orientational variation, was proposed and obtained reasonable agreement with both literature and our own experimental results. Graphene nanosheets/Mg-Al layered double hydroxides (GNS/LDH) were fabricated and their silicone oil suspension shows reversible thermal conductivity switching under DC electric field due to the formation/break-up of chain-like structures with a maximum switching ratio around 1.35×. This study reveals the underlying mechanism of thermal conductivity enhancement in nanoparticle suspensions, and provides a preliminary example to design and fabricate responsive thermal materials for the next generation technologies.
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Affiliation(s)
- Zi-Tong Zhang
- Key Laboratory for Thermal Science and Power Engineering of Ministry of Education, Department of Engineering Mechanics, Tsinghua University, Beijing 100084, People's Republic of China
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