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Zhang M, Ren J, Li R, Zhang W, Li Y, Yang W. Multifunctional sodium lignosulfonate/xanthan gum/sodium alginate/polyacrylamide ionic hydrogels composite as a high-performance wearable strain sensor. Int J Biol Macromol 2024; 261:129718. [PMID: 38296129 DOI: 10.1016/j.ijbiomac.2024.129718] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2023] [Revised: 01/13/2024] [Accepted: 01/22/2024] [Indexed: 02/06/2024]
Abstract
Recently, conductive hydrogels have shown great promise in flexible electronics and are ideal materials for the preparation of wearable strain sensors. However, developing a simple method to produce conductive hydrogels with excellent mechanical properties, self-adhesion, transparency, anti-freezing, and UV resistance remains a significant challenge. A novel sodium lignosulfonate/xanthan gum/sodium alginate/polyacrylamide/Zn2+/DMSO (SLS/XG/SA/PAM/Zn2+/DMSO) ionic conductive hydrogel was developed using a one-pot method. The resulting ionic conductive hydrogels have excellent mechanical properties (stress: 0.13 MPa, strain: 1629 %), high anti-fatigue properties, self-adhesion properties (iron: 7.37 kPa, pigskin: 4.74 kPa), anti-freezing (freezing point: -33.49 °C) and UV resistance by constructing a chemical and physical hybrid cross-linking network. In particular, the conductivity of G hydrogel reached 6.02 S/m at room temperature and 5.52 S/m at -20 °C. Thus, the hydrogel was assembled into a flexible sensor that could distinguish a variety of large and small scales human movements, such as joint bending, swallowing and speaking in real time with high stability and sensitivity. Moreover, the hydrogel could be used as electronic skin just like human skin and touch screen pen to write.
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Affiliation(s)
- Minmin Zhang
- Chemistry & Chemical Engineering College, Northwest Normal University, Key Lab of Polymer Materials of Ministry of Education of Ecological Environment, Key Lab of Bioelectrochemistry & Environmental Analysis of Gansu, Lanzhou 730070, PR China
| | - Jie Ren
- Chemistry & Chemical Engineering College, Northwest Normal University, Key Lab of Polymer Materials of Ministry of Education of Ecological Environment, Key Lab of Bioelectrochemistry & Environmental Analysis of Gansu, Lanzhou 730070, PR China.
| | - Ruirui Li
- Chemistry & Chemical Engineering College, Northwest Normal University, Key Lab of Polymer Materials of Ministry of Education of Ecological Environment, Key Lab of Bioelectrochemistry & Environmental Analysis of Gansu, Lanzhou 730070, PR China
| | - Wenjing Zhang
- Chemistry & Chemical Engineering College, Northwest Normal University, Key Lab of Polymer Materials of Ministry of Education of Ecological Environment, Key Lab of Bioelectrochemistry & Environmental Analysis of Gansu, Lanzhou 730070, PR China
| | - Yan Li
- Chemistry & Chemical Engineering College, Northwest Normal University, Key Lab of Polymer Materials of Ministry of Education of Ecological Environment, Key Lab of Bioelectrochemistry & Environmental Analysis of Gansu, Lanzhou 730070, PR China
| | - Wu Yang
- Chemistry & Chemical Engineering College, Northwest Normal University, Key Lab of Polymer Materials of Ministry of Education of Ecological Environment, Key Lab of Bioelectrochemistry & Environmental Analysis of Gansu, Lanzhou 730070, PR China
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2
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Chi M, Zhao J, Ke J, Liu Y, Wang R, Wang C, Hung SF, Lee TJ, Geng Z, Zeng J. Bipyridine-Confined Silver Single-Atom Catalysts Facilitate In-Plane C-O Coupling for Propylene Electrooxidation. NANO LETTERS 2024; 24:1801-1807. [PMID: 38277670 DOI: 10.1021/acs.nanolett.3c04978] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/28/2024]
Abstract
The electrooxidation of propylene presents a promising route for the production of 1,2-propylene glycol (PG) under ambient conditions. However, the C-O coupling process remains a challenge owing to the high energy barrier. In this work, we developed a highly efficient electrocatalyst of bipyridine-confined Ag single atoms on UiO-bpy substrates (Ag SAs/UiO-bpy), which exposed two in-plane coordination vacancies during reaction for the co-adsorption of key intermediates. Detailed structure and electronic property analyses demonstrate that CH3CHCH2OH* and *OH could stably co-adsorb in a square planar configuration, which then accelerates the charge transfer between them. The combination of stable co-adsorption and efficient charge transfer facilitates the C-O coupling process, thus significantly lowering its energy barrier. At 2.4 V versus a reversible hydrogen electrode, Ag SAs/UiO-bpy achieved a record-high activity of 61.9 gPG m-2 h-1. Our work not only presents a robust electrocatalyst but also advances a new perspective on catalyst design for propylene electrooxidation.
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Affiliation(s)
- Mingfang Chi
- Hefei National Research Center for Physical Sciences at the Microscale, CAS Key Laboratory of Strongly-Coupled Quantum Matter Physics, Key Laboratory of Surface and Interface Chemistry and Energy Catalysis of Anhui Higher Education Institutes, Department of Chemical Physics, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
| | - Jiankang Zhao
- Hefei National Research Center for Physical Sciences at the Microscale, CAS Key Laboratory of Strongly-Coupled Quantum Matter Physics, Key Laboratory of Surface and Interface Chemistry and Energy Catalysis of Anhui Higher Education Institutes, Department of Chemical Physics, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
| | - Jingwen Ke
- Hefei National Research Center for Physical Sciences at the Microscale, CAS Key Laboratory of Strongly-Coupled Quantum Matter Physics, Key Laboratory of Surface and Interface Chemistry and Energy Catalysis of Anhui Higher Education Institutes, Department of Chemical Physics, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
| | - Yan Liu
- Hefei National Research Center for Physical Sciences at the Microscale, CAS Key Laboratory of Strongly-Coupled Quantum Matter Physics, Key Laboratory of Surface and Interface Chemistry and Energy Catalysis of Anhui Higher Education Institutes, Department of Chemical Physics, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
| | - Ruyang Wang
- Hefei National Research Center for Physical Sciences at the Microscale, CAS Key Laboratory of Strongly-Coupled Quantum Matter Physics, Key Laboratory of Surface and Interface Chemistry and Energy Catalysis of Anhui Higher Education Institutes, Department of Chemical Physics, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
| | - Chuanhao Wang
- Hefei National Research Center for Physical Sciences at the Microscale, CAS Key Laboratory of Strongly-Coupled Quantum Matter Physics, Key Laboratory of Surface and Interface Chemistry and Energy Catalysis of Anhui Higher Education Institutes, Department of Chemical Physics, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
| | - Sung-Fu Hung
- Department of Applied Chemistry, National Yang Ming Chiao Tung University, Hsinchu 300, Taiwan
| | - Tsung-Ju Lee
- Department of Applied Chemistry, National Yang Ming Chiao Tung University, Hsinchu 300, Taiwan
| | - Zhigang Geng
- Hefei National Research Center for Physical Sciences at the Microscale, CAS Key Laboratory of Strongly-Coupled Quantum Matter Physics, Key Laboratory of Surface and Interface Chemistry and Energy Catalysis of Anhui Higher Education Institutes, Department of Chemical Physics, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
| | - Jie Zeng
- Hefei National Research Center for Physical Sciences at the Microscale, CAS Key Laboratory of Strongly-Coupled Quantum Matter Physics, Key Laboratory of Surface and Interface Chemistry and Energy Catalysis of Anhui Higher Education Institutes, Department of Chemical Physics, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
- School of Chemistry & Chemical Engineering, Anhui University of Technology, Ma'anshan, Anhui 243002, P. R. China
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3
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Zhang X, Fan A, Shu Z, Ma W, Zhang X. Surface-enhanced Raman database of 24 metabolites: Stable measurement of spectra, extraction and analysis of the main features. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2024; 306:123587. [PMID: 37918093 DOI: 10.1016/j.saa.2023.123587] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/06/2023] [Revised: 10/26/2023] [Accepted: 10/27/2023] [Indexed: 11/04/2023]
Abstract
Surface-enhanced Raman spectroscopy (SERS) has been used in Raman-based metabolomics to provide abundant molecular fingerprint information in situ with extremely high sensitivity, without damaging the sample. However, poor reproducibility, caused by the randomness of the adsorption sites, and the short-range effect of SERS have hindered the development of SERS in metabolomics, resulting in very few SERS reference databases for small-molecule metabolites. In this work, our previously proposed large laser spot-swift mapping SERS method was adopted for the measurement of 24 commercially available metabolite standards, to provide reproducible and reliable references for Raman-based metabolomics study. Among these 24 metabolites, 22 contained no Raman data in PubChem. Other than the SERS spectra data, we extracted and explained the molecular vibration information of these metabolites, and combined with the density functional theory (DFT) calculations, we provided a new possibility for the fast Raman recognition of small-molecule metabolites. Accordingly, a large laser spot-swift mapping SERS database of metabolites in human serum was initially established, which contained not only the original spectral data but also other detailed feature information regarding the Raman peaks. With continuous accumulation, this database could play a promising role in Raman-based metabolomics and other Raman-related research.
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Affiliation(s)
- Xiaoyu Zhang
- Key Laboratory for Thermal Science and Power Engineering of Ministry of Education, Department of Engineering Mechanics, Tsinghua University, Beijing, 100084, China
| | - Aoran Fan
- Key Laboratory for Thermal Science and Power Engineering of Ministry of Education, Department of Engineering Mechanics, Tsinghua University, Beijing, 100084, China
| | - Zixin Shu
- Key Laboratory for Thermal Science and Power Engineering of Ministry of Education, Department of Engineering Mechanics, Tsinghua University, Beijing, 100084, China
| | - Weigang Ma
- Key Laboratory for Thermal Science and Power Engineering of Ministry of Education, Department of Engineering Mechanics, Tsinghua University, Beijing, 100084, China
| | - Xing Zhang
- Key Laboratory for Thermal Science and Power Engineering of Ministry of Education, Department of Engineering Mechanics, Tsinghua University, Beijing, 100084, China.
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4
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Strapasson GB, de C Flach E, Assis M, Corrêa SA, Longo E, Machado G, Santos JFL, Weibel DE. Eco-friendly Synthesis of Silver Nanoparticles and its Application in Hydrogen Photogeneration and Nanoplasmonic Biosensing. Chemphyschem 2023; 24:e202300002. [PMID: 37535823 DOI: 10.1002/cphc.202300002] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2023] [Revised: 07/31/2023] [Accepted: 08/02/2023] [Indexed: 08/05/2023]
Abstract
Environmentally friendly methods for silver nanoparticles (AgNPs) synthesis without the use of hazardous chemicals have recently drawn attention. In this work, AgNPs have been synthesized by microwave irradiation using only honey solutions or aqueous fresh pink radish extracts. The concentrations of honey, radish extract, AgNO3 and pH were varied. AgNPs presented mean sizes between 7.0 and 12.8 nm and were stable up to 120 days. The AgNPs were employed as co-catalyst (TiO2 @AgNPs) to increase the hydrogen photogeneration under UV-vis and only visible light irradiation, when compared to pristine TiO2 NPs. The prepared photocatalyst also showed hydrogen generation under visible light. Additionally, AgNPs were used to assemble a nanoplasmonic biosensor for the biodetection of extremely low concentrations of streptavidin, owing to its specific binding to biotin. It is shown here that green AgNPs are versatile nanomaterials, thus being potential candidates for hydrogen photogeneration and biosensing applications.
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Affiliation(s)
- Guilherme B Strapasson
- Institute of Chemistry, Universidade Federal do Rio Grande do Sul, UFRGS, Av. Bento Gonçalves 9500, P.O.Box 15003, 91501-970, Porto Alegre, RS, Brazil
| | - Eduarda de C Flach
- Institute of Chemistry, Universidade Federal do Rio Grande do Sul, UFRGS, Av. Bento Gonçalves 9500, P.O.Box 15003, 91501-970, Porto Alegre, RS, Brazil
| | - Marcelo Assis
- Department of Analytical and Physical Chemistry, University Jaume I (UJI), Castelló, 12071, Spain
| | - Silma A Corrêa
- Institute of Chemistry, Universidade Federal do Rio Grande do Sul, UFRGS, Av. Bento Gonçalves 9500, P.O.Box 15003, 91501-970, Porto Alegre, RS, Brazil
| | - Elson Longo
- CDMF, Federal University of Sao Carlos - UFSCar, P.O. Box 676, 13565e905, São Carlos, São Paulo, Brazil
| | - Giovanna Machado
- Centro de Tecnologias Estratégicas do Nordeste (CETENE), Av. Prof. Luís Freire, n° 01 - CidadeUniversitária, Recife/PE, 50.740-545, Brazil
- Current Adress: Institute of Chemistry, University of Campinas, UNICAMP, Campinas, 13083-970, São Paulo, Brazil
| | - Jacqueline F L Santos
- Institute of Chemistry, Universidade Federal do Rio Grande do Sul, UFRGS, Av. Bento Gonçalves 9500, P.O.Box 15003, 91501-970, Porto Alegre, RS, Brazil
| | - Daniel E Weibel
- Institute of Chemistry, Universidade Federal do Rio Grande do Sul, UFRGS, Av. Bento Gonçalves 9500, P.O.Box 15003, 91501-970, Porto Alegre, RS, Brazil
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5
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Yao G, Fang S, Yin P, Li A, Yang W, Wang H, Tan W. A colorimetric and fluorometric dual-mode probe for Cu 2+detection based on functionalized silver nanoparticles. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023:10.1007/s11356-023-29343-6. [PMID: 37589853 DOI: 10.1007/s11356-023-29343-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Subscribe] [Scholar Register] [Received: 05/23/2023] [Accepted: 08/10/2023] [Indexed: 08/18/2023]
Abstract
A novel colorimetric/fluorescent probe (AgNPs-GSH-Rh6G2) was prepared by linking silver nanoparticles (AgNPs) with rhodamine 6G derivative (Rh6G2) using glutathione (GSH) as a linker molecule. The prepared probe showed obvious fluorescence change and colorimetric response after adding copper ions. Based on this phenomenon, a colorimetric/fluorescence dual-mode detection method was constructed to recognize copper ions. The linear ranges of fluorescence detection and colorimetric detection were 0.10 to 0.45 mM and 0.15 to 0.65 mM, respectively, and the limit of detection were 0.18 μM and 24.90 μΜ. In addition, the dual-mode probe has achieved satisfactory results in the detection of copper ions in sediment samples. The successful construction of AgNPs-GSH-Rh6G2 not only provide a reliable tool for the detection of copper ions, but also shed light on a new idea for the multi-mode development of the detection platform.
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Affiliation(s)
- Guixiang Yao
- Key Laboratory of Resource Clean Conversion in Ethnic Regions, Education Department of Yunnan, Key Laboratory of Environmental Functional Materials of Yunnan Province Education Department, School of Chemistry and Environment, Yunnan Minzu University, Kunming, 650500, People's Republic of China
| | - Shuju Fang
- Key Laboratory of Resource Clean Conversion in Ethnic Regions, Education Department of Yunnan, Key Laboratory of Environmental Functional Materials of Yunnan Province Education Department, School of Chemistry and Environment, Yunnan Minzu University, Kunming, 650500, People's Republic of China
| | - Pengyuan Yin
- Key Laboratory of Resource Clean Conversion in Ethnic Regions, Education Department of Yunnan, Key Laboratory of Environmental Functional Materials of Yunnan Province Education Department, School of Chemistry and Environment, Yunnan Minzu University, Kunming, 650500, People's Republic of China
| | - Ailing Li
- Key Laboratory of Resource Clean Conversion in Ethnic Regions, Education Department of Yunnan, Key Laboratory of Environmental Functional Materials of Yunnan Province Education Department, School of Chemistry and Environment, Yunnan Minzu University, Kunming, 650500, People's Republic of China
| | - Wenrong Yang
- Centre for Chemistry and Biotechnology, School of Life and Environmental Sciences, Deakin University, Waurn Ponds, Victoria, 3216, Australia
| | - Hongbin Wang
- Key Laboratory of Resource Clean Conversion in Ethnic Regions, Education Department of Yunnan, Key Laboratory of Environmental Functional Materials of Yunnan Province Education Department, School of Chemistry and Environment, Yunnan Minzu University, Kunming, 650500, People's Republic of China
| | - Wei Tan
- Key Laboratory of Resource Clean Conversion in Ethnic Regions, Education Department of Yunnan, Key Laboratory of Environmental Functional Materials of Yunnan Province Education Department, School of Chemistry and Environment, Yunnan Minzu University, Kunming, 650500, People's Republic of China.
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6
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Liu J, Qi P, Chen F, Li X, Zhang J, Qian L, Gu X, Sun J, Zhang S. Improving the hygroscopicity and flame retardancy of polyamide 6 fabrics by surface coating with β-FeOOH and sulfamic acid. CHEMOSPHERE 2023:139115. [PMID: 37270037 DOI: 10.1016/j.chemosphere.2023.139115] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/12/2023] [Revised: 04/06/2023] [Accepted: 06/01/2023] [Indexed: 06/05/2023]
Abstract
The combustion of polyamide 6 (PA6) fabrics releases toxic smoke, which will pollute the environment and threaten human life and health. Herein, a novel eco-friendly flame-retardant coating was constructed and applied to PA6 fabrics. Needle-like β-FeOOH with a high surface area was firstly constructed onto the surface of PA6 fabrics by the hydrolysis of Fe3+, sulfamic acid (SA) was then introduced by a facile dipping and nipping method. The growth of β-FeOOH also endowed the PA6 fabrics with certain hydrophilicity and moisture permeability, resulting in improved comfortability. The limiting oxygen index (LOI) of the prepared PA6/Fe/6SA sample was increased to 27.2% from 18.5% of control PA6 sample, and the damaged length was reduced to only 6.0 cm from 12.0 cm of control PA6 sample. Meanwhile, the melt dripping was also eliminated. The heat release rate and total heat release values of the PA6/Fe/6SA sample were decreased to 318.5 kW/m2 and 17.0 MJ/m2, respectively, compared with those of control PA6 (494.7 kW/m2 and 21.4 MJ/m2). The analysis results indicated that nonflammable gases diluted flammable gases. The observation of char residues demonstrated that the stable char layer was formed, which effectively inhibited the transfer of heat and oxygen. The organic solvent-free coating does not contain any conventional halogens/phosphorus elements, which provides a useful methodology to produce environmentally friendly flame-retardant fabrics.
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Affiliation(s)
- Jian Liu
- State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Peng Qi
- State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Feng Chen
- State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Xiaobei Li
- State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Jingfan Zhang
- State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Lijun Qian
- Engineering Laboratory of Non-halogen Flame Retardants for Polymers, Beijing Technology and Business University, Beijing, 100048, China
| | - Xiaoyu Gu
- State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Jun Sun
- State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing, 100029, China; Beijing Key Laboratory of Advanced Functional Polymer Composites, Beijing University of Chemical Technology, Beijing, 100029, China.
| | - Sheng Zhang
- State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing, 100029, China; Beijing Key Laboratory of Advanced Functional Polymer Composites, Beijing University of Chemical Technology, Beijing, 100029, China.
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7
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Kumar N, Maiti N, Thomas S. Insights into Plasmon-Induced Dimerization of Rhodanine-A Surface-Enhanced Raman Scattering Study. J Phys Chem A 2023; 127:4429-4439. [PMID: 37184576 DOI: 10.1021/acs.jpca.3c00902] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
Plasmon-mediated chemical reactions (PMCRs) have attracted considerable interest in recent times. The PMCR initiated by hot carriers is known to be influenced by the type of metals and the excitation wavelength. Herein, we have carried out the surface-enhanced Raman scattering (SERS) investigation of rhodanine (Rd), an important pharmacologically active heterocyclic compound, adsorbed on silver and gold nanoparticles (AgNP and AuNP) using 514.5 and 632.8 nm lasers. The prominent Raman band at 1566 cm-1 observed in the SERS spectra is attributed to the characteristic ν(C═C) stretching vibration of the Rd dimer and not of Rd tautomers. The chemical transformation of Rd to Rd dimer on metal surfaces is plausibly triggered by the indirect transfer of energetic hot electrons generated during the non-radiative decay of plasmon. The mechanism involved in the dimerization of Rd via the indirect transfer of hot electrons is also presented. The effect of wavelength on the dimerization of Rd is also observed on the AgNP surface, which indicates that the dimerization occurs more efficiently on the AgNP surface with excitation at 514.5 nm wavelength.
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Affiliation(s)
- Naveen Kumar
- Infrared Laser Spectroscopy Section, Bhabha Atomic Research Centre, Trombay, Mumbai 400085, India
| | - Nandita Maiti
- Radiation & Photochemistry Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400085, India
- Homi Bhabha National Institute, Anushaktinagar, Mumbai 400094, India
| | - Susy Thomas
- High Pressure & Synchrotron Radiation Physics Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400085, India
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Li X, He X, Ling Y, Bai Z, Liu C, Liu X, Jia K. In-situ growth of silver nanoparticles on sulfonated polyarylene ether nitrile nanofibers as super-wetting antibacterial oil/water separation membranes. J Memb Sci 2023. [DOI: 10.1016/j.memsci.2023.121539] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/05/2023]
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9
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Kanioura A, Geka G, Kochylas I, Likodimos V, Gardelis S, Dimitriou A, Papanikolaou N, Kakabakos S, Petrou P. SERS Determination of Oxidative Stress Markers in Saliva Using Substrates with Silver Nanoparticle-Decorated Silicon Nanowires. BIOSENSORS 2023; 13:273. [PMID: 36832039 PMCID: PMC9953924 DOI: 10.3390/bios13020273] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/06/2023] [Revised: 02/11/2023] [Accepted: 02/13/2023] [Indexed: 06/18/2023]
Abstract
Glutathione and malondialdehyde are two compounds commonly used to evaluate the oxidative stress status of an organism. Although their determination is usually performed in blood serum, saliva is gaining ground as the biological fluid of choice for oxidative stress determination at the point of need. For this purpose, surface-enhanced Raman spectroscopy (SERS), which is a highly sensitive method for the detection of biomolecules, could offer additional advantages regarding the analysis of biological fluids at the point of need. In this work, silicon nanowires decorated with silver nanoparticles made by metal-assisted chemical etching were evaluated as substrates for the SERS determination of glutathione and malondialdehyde in water and saliva. In particular, glutathione was determined by monitoring the reduction in the Raman signal obtained from substrates modified with crystal violet upon incubation with aqueous glutathione solutions. On the other hand, malondialdehyde was detected after a reaction with thiobarbituric acid to produce a derivative with a strong Raman signal. The detection limits achieved after optimization of several assay parameters were 50 and 3.2 nM for aqueous solutions of glutathione and malondialdehyde, respectively. In artificial saliva, however, the detection limits were 2.0 and 0.32 μM for glutathione and malondialdehyde, respectively, which are, nonetheless, adequate for the determination of these two markers in saliva.
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Affiliation(s)
- Anastasia Kanioura
- Immunoassays/Immunosensors Laboratory, Institute of Nuclear & Radiological Sciences & Technology, Energy & Safety, NCSR “Demokritos”, 15341 Aghia Paraskevi, Greece
| | - Georgia Geka
- Immunoassays/Immunosensors Laboratory, Institute of Nuclear & Radiological Sciences & Technology, Energy & Safety, NCSR “Demokritos”, 15341 Aghia Paraskevi, Greece
| | - Ioannis Kochylas
- Section of Condensed Matter Physics, Department of Physics, National and Kapodistrian University of Athens, University Campus, 15784 Athens, Greece
| | - Vlassis Likodimos
- Section of Condensed Matter Physics, Department of Physics, National and Kapodistrian University of Athens, University Campus, 15784 Athens, Greece
| | - Spiros Gardelis
- Section of Condensed Matter Physics, Department of Physics, National and Kapodistrian University of Athens, University Campus, 15784 Athens, Greece
| | - Anastasios Dimitriou
- Institute of Nanoscience & Nanotechnology, NCSR “Demokritos”, 15341 Aghia Paraskevi, Greece
| | - Nikolaos Papanikolaou
- Institute of Nanoscience & Nanotechnology, NCSR “Demokritos”, 15341 Aghia Paraskevi, Greece
| | - Sotirios Kakabakos
- Immunoassays/Immunosensors Laboratory, Institute of Nuclear & Radiological Sciences & Technology, Energy & Safety, NCSR “Demokritos”, 15341 Aghia Paraskevi, Greece
| | - Panagiota Petrou
- Immunoassays/Immunosensors Laboratory, Institute of Nuclear & Radiological Sciences & Technology, Energy & Safety, NCSR “Demokritos”, 15341 Aghia Paraskevi, Greece
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10
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Rather AH, Khan RS, Wani TU, Rafiq M, Jadhav AH, Srinivasappa PM, Abdal-Hay A, Sultan P, Rather SU, Macossay J, Sheikh FA. Polyurethane and cellulose acetate micro-nanofibers containing rosemary essential oil, and decorated with silver nanoparticles for wound healing application. Int J Biol Macromol 2023; 226:690-705. [PMID: 36513179 DOI: 10.1016/j.ijbiomac.2022.12.048] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2022] [Revised: 12/03/2022] [Accepted: 12/05/2022] [Indexed: 12/14/2022]
Abstract
In this study, polyurethane (PU) and cellulose acetate (CA) electrospun fibers encapsulating rosemary essential oil (REO) and adsorbed silver (Ag) nanoparticles (NPs) were fabricated. The biologically inspired materials were analyzed for physicochemical characteristics using scanning electron microscopy, X-ray diffractometer, Fourier transform infrared, thermal gravimetric analysis, X-ray photoelectron spectroscopy, water contact angle, and water uptake studies. Results confirmed the presence of CA and Ag NPs on the PU micro-nanofibers increased the hydrophilicity from 107.1 ± 0.36o to 26.35 ± 1.06o. The water absorption potential increased from 0.07 ± 0.04 for pristine PU fibers to 12.43 ± 0.49 % for fibers with 7 wt% of CA, REO, and Ag NPs. The diffractometer confirmed the 2θ of 38.01°, 44.13o, and 64.33o, corresponding to the diffraction planes of Ag on the fibers. The X-ray photoelectron spectroscopy confirmed microfibers interfacial chemical interaction and surface changes due to CA, REO, and Ag presence. The inhibition tests on Staphylococcus aureus and Escherichia coli indicated that composites are antibacterial in activity. Moreover, synergistic interactions of REO and Ag NPs resulted in superior antibacterial activity. The cell viability and attachment assay showed improved hydrophilicity of the fibers, which resulted in better attachment of cells to the micro-nanofibers, similar to the natural extracellular matrix in the human body.
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Affiliation(s)
- Anjum Hamid Rather
- Nanostructured and Biomimetic Lab, Department of Nanotechnology, University of Kashmir Hazratbal, Srinagar 190006, Jammu and Kashmir, India
| | - Rumysa Saleem Khan
- Nanostructured and Biomimetic Lab, Department of Nanotechnology, University of Kashmir Hazratbal, Srinagar 190006, Jammu and Kashmir, India
| | - Taha Umair Wani
- Nanostructured and Biomimetic Lab, Department of Nanotechnology, University of Kashmir Hazratbal, Srinagar 190006, Jammu and Kashmir, India
| | - Muheeb Rafiq
- Nanostructured and Biomimetic Lab, Department of Nanotechnology, University of Kashmir Hazratbal, Srinagar 190006, Jammu and Kashmir, India
| | - Arvind H Jadhav
- Centre for Nano and Material Science (CNMS), Jain University, Jain Global Campus, Bangalore 562112, Karnataka, India
| | - Puneethkumar M Srinivasappa
- Centre for Nano and Material Science (CNMS), Jain University, Jain Global Campus, Bangalore 562112, Karnataka, India
| | - Abdalla Abdal-Hay
- Department of Mechanical Engineering, Faculty of Engineering, South Valley University, Qena 83523, Egypt; The University of Queensland, School of Dentistry, Oral Health Centre Herston, 288 Herston Road, Herston, QLD 4006, Australia
| | - Phalisteen Sultan
- Department of Cellular and Molecular Biotechnology, CSIR-Indian Institute of Integrative Medicine, Sanantnagar, Srinagar 190005, Jammu and Kashmir, India
| | - Sami-Ullah Rather
- Department of Chemical and Materials Engineering, King Abdulaziz University, Jeddah 21589, Saudi Arabia
| | - Javier Macossay
- Department of Chemistry, The University of Texas Rio Grande Valley, 1201 W. University Dr., Edinburg, TX 78539, United States of America
| | - Faheem A Sheikh
- Nanostructured and Biomimetic Lab, Department of Nanotechnology, University of Kashmir Hazratbal, Srinagar 190006, Jammu and Kashmir, India.
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11
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Hu QH, Gao X, Shi YZ, Liang RP, Zhang L, Lin S, Qiu JD. Tailor-Made Multiple Interpenetrated Metal–Organic Framework for Selective Detection and Adsorption of ReO 4–. Anal Chem 2022; 94:16864-16870. [DOI: 10.1021/acs.analchem.2c03983] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Affiliation(s)
- Qing-Hua Hu
- College of Chemistry, Nanchang University, Nanchang 330031, China
| | - Xin Gao
- College of Chemistry, Nanchang University, Nanchang 330031, China
| | - Yu-Zhen Shi
- College of Chemistry, Nanchang University, Nanchang 330031, China
| | - Ru-Ping Liang
- College of Chemistry, Nanchang University, Nanchang 330031, China
| | - Li Zhang
- College of Chemistry, Nanchang University, Nanchang 330031, China
| | - Sen Lin
- College of Chemistry, Nanchang University, Nanchang 330031, China
| | - Jian-Ding Qiu
- College of Chemistry, Nanchang University, Nanchang 330031, China
- State Key Laboratory of Nuclear Resources and Environment, East China University of Technology, Nanchang 330013, China
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12
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Ding S, Wang D, Wang X. Hierarchically structural layered double oxides with stretchable nanopores for highly effective removal of protein-bound uremic toxins. Sep Purif Technol 2022; 301:122033. [PMID: 36071792 PMCID: PMC9436783 DOI: 10.1016/j.seppur.2022.122033] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2022] [Revised: 08/08/2022] [Accepted: 08/26/2022] [Indexed: 12/02/2022]
Abstract
The global outbreak and prevalence of coronavirus disease 2019 (COVID-19) has triggered an urgent demand for family hemodialysis equipment. It is particularly vital to design and apply superior adsorbents to adsorb toxins for reducing the usage of dialysate. In this work, hierarchically structural MgAl layered double oxides (LDO) with stretchable nanopores were exploited through a facile one-pot trisodium citrate (TSC) assistant hydrothermal reaction followed by calcination treatment for effectively adsorbing protein-bound uremic toxins such as hippuric acid (HA) or indoxyl sulfate (IS). The optimized MgAl LDO possessed flower-like spherical morphology, ultrahigh specific surface area (187.3 m2/g) and uniquely stretchable nanopores, which were more conducive to incorporating anions due to their unique memory effect endowing them with promising adsorption capacities for HA or IS. And the adsorption data could be better conformed to pseudo-second-order kinetic model and Langmuir isotherm determining that the maximum adsorption capacity of HA and IS was 129.8 mg/g and 63.1 mg/g, respectively. Furthermore, the computation of molecular size paired with the analysis of adsorption mechanism accurately revealed that high-efficiency toxin capture was mainly attributed to electrostatic interaction for internal intercalation and surface adsorption. Therefore, the application of such delicate LDO as new premium adsorbent would facilitate the development and popularization of family hemodialysis equipment.
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Affiliation(s)
- Siping Ding
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, PR China
| | - Dong Wang
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, PR China
| | - Xuefen Wang
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, PR China
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13
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Muniz-Miranda F, Pedone A, Menziani MC, Muniz-Miranda M. DFT and TD-DFT Study of the Chemical Effect in the SERS Spectra of Piperidine Adsorbed on Silver Colloidal Nanoparticles. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:2907. [PMID: 36079945 PMCID: PMC9458020 DOI: 10.3390/nano12172907] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/28/2022] [Revised: 08/17/2022] [Accepted: 08/20/2022] [Indexed: 06/15/2023]
Abstract
The surface-enhanced Raman scattering (SERS) spectra of piperidine adsorbed on silver/chloride colloids were studied by a combined density functional theory (DFT)/time dependent DFT (TD-DFT) approach. The mechanism of chemical enhancement on the Raman signals is due to at least two contributions: the first comes from the changes in the molecular force constants and the dynamic polarizabilities of the normal modes, when the molecule is chemisorbed. DFT calculations satisfactorily reproduce the SERS spectra of piperidine adsorbed on silver, showing that the species formed on the silver particle is a complex formed by a deprotonated piperidine linked to a silver cation. A second contribution to the SERS chemical enhancement is due to a resonance Raman effect occurring when the wavelength of the Raman excitation falls within the electronic excitation band of the molecule/metal complex. Actually, the SERS spectra of piperidine show a significant dependence on the wavelength of the laser excitation, with a marked enhancement in the green-light region. TD-DFT calculations on the most-probable complex explain this behavior, because a strong excitation band of the complex is calculated in the green spectral region. This pinpoints that a resonance between the exciting radiation and the absorption band of this complex is responsible for this enhancement effect.
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Affiliation(s)
- Francesco Muniz-Miranda
- Department and Geological Sciences (DSCG), University of Modena and Reggio Emilia, Via Campi 103, 41125 Modena, Italy
| | - Alfonso Pedone
- Department and Geological Sciences (DSCG), University of Modena and Reggio Emilia, Via Campi 103, 41125 Modena, Italy
| | - Maria Cristina Menziani
- Department and Geological Sciences (DSCG), University of Modena and Reggio Emilia, Via Campi 103, 41125 Modena, Italy
| | - Maurizio Muniz-Miranda
- Department of Chemistry “Ugo Schiff” (DiCUS), University of Florence, Via Lastruccia 3, 50019 Sesto Fiorentino, Italy
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14
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An Y, Sedinkin SL, Venditti V. Solution NMR methods for structural and thermodynamic investigation of nanoparticle adsorption equilibria. NANOSCALE ADVANCES 2022; 4:2583-2607. [PMID: 35769933 PMCID: PMC9195484 DOI: 10.1039/d2na00099g] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/13/2022] [Accepted: 05/07/2022] [Indexed: 05/09/2023]
Abstract
Characterization of dynamic processes occurring at the nanoparticle (NP) surface is crucial for developing new and more efficient NP catalysts and materials. Thus, a vast amount of research has been dedicated to developing techniques to characterize sorption equilibria. Over recent years, solution NMR spectroscopy has emerged as a preferred tool for investigating ligand-NP interactions. Indeed, due to its ability to probe exchange dynamics over a wide range of timescales with atomic resolution, solution NMR can provide structural, kinetic, and thermodynamic information on sorption equilibria involving multiple adsorbed species and intermediate states. In this contribution, we review solution NMR methods for characterizing ligand-NP interactions, and provide examples of practical applications using these methods as standalone techniques. In addition, we illustrate how the integrated analysis of several NMR datasets was employed to elucidate the role played by support-substrate interactions in mediating the phenol hydrogenation reaction catalyzed by ceria-supported Pd nanoparticles.
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Affiliation(s)
- Yeongseo An
- Department of Chemistry, Iowa State University Hach Hall, 2438 Pammel Drive Ames Iowa 50011 USA +1-515-294-7550 +1-515-294-1044
| | - Sergey L Sedinkin
- Department of Chemistry, Iowa State University Hach Hall, 2438 Pammel Drive Ames Iowa 50011 USA +1-515-294-7550 +1-515-294-1044
| | - Vincenzo Venditti
- Department of Chemistry, Iowa State University Hach Hall, 2438 Pammel Drive Ames Iowa 50011 USA +1-515-294-7550 +1-515-294-1044
- Roy J. Carver Department of Biochemistry, Biophysics and Molecular Biology, Iowa State University Ames Iowa 50011 USA
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15
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Silver nanoparticle decorated γ-cyclodextrin with 1,5-dihydroxy naphthalene inclusion complex; as a sensitive fluorescence probe for dual metal ion sensing employing spectrum techniques. Chem Phys Lett 2022. [DOI: 10.1016/j.cplett.2022.139537] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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16
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Lee DU, Kim DW, Lee SY, Choi DY, Choi SY, Moon KS, Shon MY, Moon MJ. Amino acid-mediated negatively charged surface improve antifouling and tribological characteristics for medical applications. Colloids Surf B Biointerfaces 2022; 211:112314. [PMID: 35033790 DOI: 10.1016/j.colsurfb.2021.112314] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2021] [Revised: 12/23/2021] [Accepted: 12/30/2021] [Indexed: 11/18/2022]
Abstract
To prevent infections associated with biomedical catheters, various antimicrobial coatings have been investigated. However, those materials do not provide consistent antibacterial effects or biocompatibility, generally, due to degradation of the coating materials, in vivo. Additionally, biomedical catheters must have low surface friction to reduce tribological damage. In this study, we developed an antifouling surface composed of biocompatible amino acids (leucine, taurine, and aspartic acid) on polyimide, via modification using a series of facile immersion steps with waterborne reactions. The naturally derived amino acid could be formed highly biostable amide bonds on the polyimide surface like peptides. The amino acid-modified surface formed a water layer with antifouling performance through the hydrophilic properties of amino acids. Amino acid-mediated modification reduced adhesion up to 84.45% and 94.81% against Escherichia coli and Staphylococcus epidermidis, respectively, and exhibited an excellent prevention to adhesion against the proteins, albumin and fibrinogen. Evaluation of the surface friction of the catheter revealed a dramatic reduction in the tribological force after amino acid modification on polyimide that of 0.81 N to aspartic acid of 0.44 N. These results clearly demonstrate a reduced occurrence of infections, thrombi and tribological damage following the relatively facile surface modification of catheters. The proposed modification method can be used in a continuous manufacturing process via using the same time of modification steps for the easy producing the product. Moreover, the method uses biocompatible naturally derived materials and can be applied to medical equipment that requires biocompatibility and biofunctionality with polyimide surfaces.
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Affiliation(s)
- Dong Uk Lee
- Department of Industrial Chemistry, Pukyong National University, Busan 48513, Republic of Korea
| | - Dong Won Kim
- Research Institute for Green Energy Convergence Technology, Gyeongsang National University, Jinju, Gyeongnam 52828, Republic of Korea
| | - Seung Yeup Lee
- Department of Applied Bioscience, Dong-A University, Busan 49315, Republic of Korea
| | - Dong Yun Choi
- Biomedical Manufacturing Technology Center, Korea Institute of Industrial Technology, Yeongcheon, Gyeongbuk 38822, Republic of Korea
| | - Seung Yong Choi
- Department of Industrial Chemistry, Pukyong National University, Busan 48513, Republic of Korea
| | - Kyoung-Seok Moon
- Department of Materials Engineering and Convergence Technology, School of materials Science and Engineering, Gyeongsang National University, Jinju, Gyeongnam 52828, Republic of Korea
| | - Min Young Shon
- Department of Industrial Chemistry, Pukyong National University, Busan 48513, Republic of Korea.
| | - Myung Jun Moon
- Department of Industrial Chemistry, Pukyong National University, Busan 48513, Republic of Korea.
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17
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Investigation of the protolytic equilibrium of a highly Brønsted acidic ionic liquid and residual water using Raman spectroscopy. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2021.117796] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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18
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Evaluation of Antibacterial Effects of Matrix-Induced Silver Ions against Antibiotic-Resistant ESKAPE Pathogens. Pharmaceuticals (Basel) 2021; 14:ph14111094. [PMID: 34832878 PMCID: PMC8621581 DOI: 10.3390/ph14111094] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2021] [Revised: 10/23/2021] [Accepted: 10/25/2021] [Indexed: 12/15/2022] Open
Abstract
Recently, drug-resistant bacterial infections, especially ESKAPE pathogens (Enterococcus faecium, Staphylococcus aureus, Klebsiella pneumoniae, Acinetobacter baumannii, Pseudomonas aeruginosa, and Enterobacter spp.), have become a critical health issue worldwide, highlighting the emerging need for novel antibacterial agents. In this study, silver nanoparticles were extracted from silver-containing mesoporous bioactive glass (MBG-Ag) using four different matrixes, including water, phosphate buffer saline (PBS), tryptic soy broth (TSB), and taurine (Tau). The inductively coupled plasma-mass spectrometer (ICP-MS) results demonstrated that the silver concentration of Tau-Ag was the highest among the four matrixes. The Tau-Ag was also observed to have 87.35% silver ions in its X-ray photoelectron spectrometer (XPS) spectra. The micrograph of transmission electron microscope (TEM) displayed a uniform distribution of silver nanoparticles, which was confined in a smaller size compared to that in TSB-Ag. Moreover, the peak shifts observed in the Fourier-transform infrared spectrometer (FTIR) spectrum implied that the -SO32− and -NH groups in taurine may interact with silver. A low cytotoxicity was noted for Tau-Ag, with approximately 70% of cells surviving at 0.63 mg/mL. Compared to the other three matrix-induced silver agents, Tau-Ag represented a better antibacterial effect against methicillin-resistant Staphylococcus aureus, with a minimum inhibitory concentration (MIC) value of 0.63 mg/mL and a postponed growth of 0.31 mg/mL observed. Further antibacterial examinations illustrated the presence of remarkable antibacterial activities against vancomycin-resistant Enterococcus feacium, carbapenem-resistant Klebsiella pneumoniae, carbapenem-resistant Acinetobacter baumannii, and carbapenem-resistant Pseudomonas aeruginosa. Given our observations and multiple bioactive functions of taurine (prevent patients from inflammation and oxidative-stress injuries), we anticipate that taurine matrix-induced silver ions would be a biomedical material with a high potential for combatting drug-resistant ESKAPE pathogens.
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19
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Zhen Y, Liu D, Zhou M, Lin Z, Jin S, Chen S, Hu D, Zhu M. Polystyrene Microspheres Decorated with Au
4
Cu
5
Nanoclusters and their Application in Catalytic Reduction of 4‐Nitrophenol. ChemistrySelect 2021. [DOI: 10.1002/slct.202102193] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Yaru Zhen
- Department of Chemistry and Centre for Atomic Engineering of Advanced Materials Anhui Province Key Laboratory of Chemistry for Inorganic/ Organic Hybrid Functionalized Materials Anhui University Hefei Anhui People's Republic of China
- Key Laboratory of Structure and Functional Regulation of Hybrid Materials Anhui University, Ministry of Education Hefei Anhui People's Republic of China
| | - Danyu Liu
- Department of Chemistry and Centre for Atomic Engineering of Advanced Materials Anhui Province Key Laboratory of Chemistry for Inorganic/ Organic Hybrid Functionalized Materials Anhui University Hefei Anhui People's Republic of China
- Key Laboratory of Structure and Functional Regulation of Hybrid Materials Anhui University, Ministry of Education Hefei Anhui People's Republic of China
| | - Manman Zhou
- Department of Chemistry and Centre for Atomic Engineering of Advanced Materials Anhui Province Key Laboratory of Chemistry for Inorganic/ Organic Hybrid Functionalized Materials Anhui University Hefei Anhui People's Republic of China
- Key Laboratory of Structure and Functional Regulation of Hybrid Materials Anhui University, Ministry of Education Hefei Anhui People's Republic of China
| | - Zhenzhen Lin
- Department of Chemistry and Centre for Atomic Engineering of Advanced Materials Anhui Province Key Laboratory of Chemistry for Inorganic/ Organic Hybrid Functionalized Materials Anhui University Hefei Anhui People's Republic of China
- Key Laboratory of Structure and Functional Regulation of Hybrid Materials Anhui University, Ministry of Education Hefei Anhui People's Republic of China
| | - Shan Jin
- Institutes of Physical Science and Information Technology Anhui University Hefei Anhui 230601 People's Republic of China
| | - Shuang Chen
- Institutes of Physical Science and Information Technology Anhui University Hefei Anhui 230601 People's Republic of China
| | - Daqiao Hu
- Department of Chemistry and Centre for Atomic Engineering of Advanced Materials Anhui Province Key Laboratory of Chemistry for Inorganic/ Organic Hybrid Functionalized Materials Anhui University Hefei Anhui People's Republic of China
- Key Laboratory of Structure and Functional Regulation of Hybrid Materials Anhui University, Ministry of Education Hefei Anhui People's Republic of China
| | - Manzhou Zhu
- Department of Chemistry and Centre for Atomic Engineering of Advanced Materials Anhui Province Key Laboratory of Chemistry for Inorganic/ Organic Hybrid Functionalized Materials Anhui University Hefei Anhui People's Republic of China
- Key Laboratory of Structure and Functional Regulation of Hybrid Materials Anhui University, Ministry of Education Hefei Anhui People's Republic of China
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20
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Hosny M, Fawzy M. Instantaneous phytosynthesis of gold nanoparticles via Persicaria salicifolia leaf extract, and their medical applications. ADV POWDER TECHNOL 2021. [DOI: 10.1016/j.apt.2021.06.004] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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21
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Elastic Properties of Taurine Single Crystals Studied by Brillouin Spectroscopy. Int J Mol Sci 2021; 22:ijms22137116. [PMID: 34281169 PMCID: PMC8267836 DOI: 10.3390/ijms22137116] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2021] [Revised: 06/28/2021] [Accepted: 06/28/2021] [Indexed: 11/24/2022] Open
Abstract
The inelastic interaction between the incident photons and acoustic phonons in the taurine single crystal was investigated by using Brillouin spectroscopy. Three acoustic phonons propagating along the crystallographic b-axis were investigated over a temperature range of −185 to 175 °C. The temperature dependences of the sound velocity, the acoustic absorption coefficient, and the elastic constants were determined for the first time. The elastic behaviors could be explained based on normal lattice anharmonicity. No evidence for the structural phase transition was observed, consistent with previous structural studies. The birefringence in the ac-plane indirectly estimated from the split longitudinal acoustic modes was consistent with one theoretical calculation by using the extrapolation of the measured dielectric functions in the infrared range.
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22
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Panáček D, Hochvaldová L, Bakandritsos A, Malina T, Langer M, Belza J, Martincová J, Večeřová R, Lazar P, Poláková K, Kolařík J, Válková L, Kolář M, Otyepka M, Panáček A, Zbořil R. Silver Covalently Bound to Cyanographene Overcomes Bacterial Resistance to Silver Nanoparticles and Antibiotics. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2021; 8:2003090. [PMID: 34194925 PMCID: PMC8224420 DOI: 10.1002/advs.202003090] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/12/2020] [Revised: 02/22/2021] [Indexed: 05/26/2023]
Abstract
The ability of bacteria to develop resistance to antibiotics is threatening one of the pillars of modern medicine. It was recently understood that bacteria can develop resistance even to silver nanoparticles by starting to produce flagellin, a protein which induces their aggregation and deactivation. This study shows that silver covalently bound to cyanographene (GCN/Ag) kills silver-nanoparticle-resistant bacteria at concentrations 30 times lower than silver nanoparticles, a challenge which has been so far unmet. Tested also against multidrug resistant strains, the antibacterial activity of GCN/Ag is systematically found as potent as that of free ionic silver or 10 nm colloidal silver nanoparticles. Owing to the strong and multiple dative bonds between the nitrile groups of cyanographene and silver, as theory and experiments confirm, there is marginal silver ion leaching, even after six months of storage, and thus very high cytocompatibility to human cells. Molecular dynamics simulations suggest strong interaction of GCN/Ag with the bacterial membrane, and as corroborated by experiments, the antibacterial activity does not rely on the release of silver nanoparticles or ions. Endowed with these properties, GCN/Ag shows that rigid supports selectively and densely functionalized with potent silver-binding ligands, such as cyanographene, may open new avenues against microbial resistance.
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Affiliation(s)
- David Panáček
- Regional Centre of Advanced Technologies and MaterialsCzech Advanced Technology and Research InstitutePalacký University OlomoucKřížkovského 511/8Olomouc779 00Czech Republic
- Department of Physical ChemistryFaculty of SciencePalacký University Olomouc17. listopadu 1192/12Olomouc771 46Czech Republic
| | - Lucie Hochvaldová
- Department of Physical ChemistryFaculty of SciencePalacký University Olomouc17. listopadu 1192/12Olomouc771 46Czech Republic
- Regional Centre of Advanced Technologies and MaterialsPalacký University OlomoucŠlechtitelů 27Olomouc783 71Czech Republic
| | - Aristides Bakandritsos
- Regional Centre of Advanced Technologies and MaterialsPalacký University OlomoucŠlechtitelů 27Olomouc783 71Czech Republic
- Nanotechnology CentreCentre of Energy and Environmental TechnologiesVŠB–Technical University of Ostrava17. listopadu 2172/15Ostrava‐Poruba708 00Czech Republic
| | - Tomáš Malina
- Department of Physical ChemistryFaculty of SciencePalacký University Olomouc17. listopadu 1192/12Olomouc771 46Czech Republic
- Regional Centre of Advanced Technologies and MaterialsPalacký University OlomoucŠlechtitelů 27Olomouc783 71Czech Republic
| | - Michal Langer
- Regional Centre of Advanced Technologies and MaterialsCzech Advanced Technology and Research InstitutePalacký University OlomoucKřížkovského 511/8Olomouc779 00Czech Republic
- Department of Physical ChemistryFaculty of SciencePalacký University Olomouc17. listopadu 1192/12Olomouc771 46Czech Republic
| | - Jan Belza
- Department of Physical ChemistryFaculty of SciencePalacký University Olomouc17. listopadu 1192/12Olomouc771 46Czech Republic
- Regional Centre of Advanced Technologies and MaterialsPalacký University OlomoucŠlechtitelů 27Olomouc783 71Czech Republic
| | - Jana Martincová
- Department of Physical ChemistryFaculty of SciencePalacký University Olomouc17. listopadu 1192/12Olomouc771 46Czech Republic
- Regional Centre of Advanced Technologies and MaterialsPalacký University OlomoucŠlechtitelů 27Olomouc783 71Czech Republic
| | - Renata Večeřová
- Department of MicrobiologyFaculty of Medicine and DentistryPalacký University OlomoucHněvotínská 3Olomouc775 15Czech Republic
| | - Petr Lazar
- Regional Centre of Advanced Technologies and MaterialsPalacký University OlomoucŠlechtitelů 27Olomouc783 71Czech Republic
| | - Kateřina Poláková
- Regional Centre of Advanced Technologies and MaterialsCzech Advanced Technology and Research InstitutePalacký University OlomoucKřížkovského 511/8Olomouc779 00Czech Republic
| | - Jan Kolařík
- Regional Centre of Advanced Technologies and MaterialsPalacký University OlomoucŠlechtitelů 27Olomouc783 71Czech Republic
| | - Lucie Válková
- Regional Centre of Advanced Technologies and MaterialsPalacký University OlomoucŠlechtitelů 27Olomouc783 71Czech Republic
| | - Milan Kolář
- Department of MicrobiologyFaculty of Medicine and DentistryPalacký University OlomoucHněvotínská 3Olomouc775 15Czech Republic
| | - Michal Otyepka
- Regional Centre of Advanced Technologies and MaterialsCzech Advanced Technology and Research InstitutePalacký University OlomoucKřížkovského 511/8Olomouc779 00Czech Republic
- Regional Centre of Advanced Technologies and MaterialsPalacký University OlomoucŠlechtitelů 27Olomouc783 71Czech Republic
| | - Aleš Panáček
- Department of Physical ChemistryFaculty of SciencePalacký University Olomouc17. listopadu 1192/12Olomouc771 46Czech Republic
- Regional Centre of Advanced Technologies and MaterialsPalacký University OlomoucŠlechtitelů 27Olomouc783 71Czech Republic
| | - Radek Zbořil
- Regional Centre of Advanced Technologies and MaterialsCzech Advanced Technology and Research InstitutePalacký University OlomoucKřížkovského 511/8Olomouc779 00Czech Republic
- Nanotechnology CentreCentre of Energy and Environmental TechnologiesVŠB–Technical University of Ostrava17. listopadu 2172/15Ostrava‐Poruba708 00Czech Republic
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23
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Sabat MJ, Wiśniewska-Becker AM, Markiewicz M, Marzec KM, Dybas J, Furso J, Pabisz P, Duda M, Pawlak AM. Tauroursodeoxycholic Acid (TUDCA)-Lipid Interactions and Antioxidant Properties of TUDCA Studied in Model of Photoreceptor Membranes. MEMBRANES 2021; 11:327. [PMID: 33946822 PMCID: PMC8146903 DOI: 10.3390/membranes11050327] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/08/2021] [Revised: 04/25/2021] [Accepted: 04/27/2021] [Indexed: 12/16/2022]
Abstract
Tauroursodeoxycholic acid (TUDCA), a hydrophilic bile acid containing taurine conjugated with the ursodeoxycholic acid (UDCA), has been known and used from ancient times as a therapeutic compound in traditional Chinese medicine. TUDCA has recently been gaining significant interest as a neuroprotective agent, also exploited in the visual disorders. Among several mechanisms of TUDCA's protective action, its antioxidant activity and stabilizing effect on mitochondrial and plasma membranes are considered. In this work we investigated antioxidant activity of TUDCA and its impact on structural properties of model membranes of different composition using electron paramagnetic resonance spectroscopy and the spin labeling technique. Localization of TUDCA molecules in a pure POPC bilayer has been studied using a molecular dynamics simulation (MD). The obtained results indicate that TUDCA is not an efficient singlet oxygen (1O2 (1Δg)) quencher, and the determined rate constant of its interaction with 1O2 (1Δg) is only 1.9 × 105 M-1s-1. However, in lipid oxidation process induced by a Fenton reaction, TUDCA reveals substantial antioxidant activity significantly decreasing the rate of oxygen consumption in the system studied. In addition, TUDCA induces slight, but noticeable changes in the polarity and fluidity of the investigated model membranes. The results of performed MD simulation correspond very well with the experimental results.
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Affiliation(s)
- Michał J. Sabat
- Department of Biophysics, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, 30-387 Krakow, Poland; (M.J.S.); (A.M.W.-B.); (J.F.); (P.P.); (M.D.)
| | - Anna M. Wiśniewska-Becker
- Department of Biophysics, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, 30-387 Krakow, Poland; (M.J.S.); (A.M.W.-B.); (J.F.); (P.P.); (M.D.)
| | - Michał Markiewicz
- Department of Computational Biophysics and Bioinformatics, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, 30-387 Krakow, Poland;
| | - Katarzyna M. Marzec
- Jagiellonian Centre for Experimental Therapeutics, Jagiellonian University, 30-348 Krakow, Poland; (K.M.M.); (J.D.)
| | - Jakub Dybas
- Jagiellonian Centre for Experimental Therapeutics, Jagiellonian University, 30-348 Krakow, Poland; (K.M.M.); (J.D.)
| | - Justyna Furso
- Department of Biophysics, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, 30-387 Krakow, Poland; (M.J.S.); (A.M.W.-B.); (J.F.); (P.P.); (M.D.)
| | - Paweł Pabisz
- Department of Biophysics, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, 30-387 Krakow, Poland; (M.J.S.); (A.M.W.-B.); (J.F.); (P.P.); (M.D.)
| | - Mariusz Duda
- Department of Biophysics, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, 30-387 Krakow, Poland; (M.J.S.); (A.M.W.-B.); (J.F.); (P.P.); (M.D.)
| | - Anna M. Pawlak
- Department of Biophysics, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, 30-387 Krakow, Poland; (M.J.S.); (A.M.W.-B.); (J.F.); (P.P.); (M.D.)
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Li J, Song B, An D, Ren Y, Hah J, Wang X, Zhang R, Moon K, Wong C. Comparison of two high temperature treatment methods on preparing electrically conductive polysulfide/Ag composites for aerospace sealant applications. J Appl Polym Sci 2021. [DOI: 10.1002/app.50121] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Jiaxiong Li
- School of Materials Science and Engineering Georgia Institute of Technology Atlanta Georgia USA
| | - Bo Song
- School of Materials Science and Engineering Georgia Institute of Technology Atlanta Georgia USA
| | - Dong An
- Shanxi Key Laboratory of Nano‐functional Composite Materials North University of China Taiyuan Shanxi China
| | - Yanjuan Ren
- Department of Materials Science and Engineering CAPT/ HEDPS/LTCS, Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, College of Engineering, Peking University Beijing China
| | - Jinho Hah
- School of Materials Science and Engineering Georgia Institute of Technology Atlanta Georgia USA
| | - Xueqiao Wang
- School of Materials Science and Engineering Georgia Institute of Technology Atlanta Georgia USA
| | - Rong Zhang
- Hubei Provincial Key Laboratory of Green Materials for Light Industry Hubei University of Technology Wuhan Hubei China
| | - Kyoung‐sik Moon
- School of Materials Science and Engineering Georgia Institute of Technology Atlanta Georgia USA
| | - Ching‐Ping Wong
- School of Materials Science and Engineering Georgia Institute of Technology Atlanta Georgia USA
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Lee SB, Paek SM, Oh JM. Porous Hybrids Structure between Silver Nanoparticle and Layered Double Hydroxide for Surface-Enhanced Raman Spectroscopy. NANOMATERIALS 2021; 11:nano11020447. [PMID: 33578775 PMCID: PMC7916476 DOI: 10.3390/nano11020447] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/31/2020] [Revised: 02/05/2021] [Accepted: 02/07/2021] [Indexed: 12/13/2022]
Abstract
Silver nanoparticle (AgNP), in terms of antibacterial, catalytic, electronic, and optical applications, is an attractive material. Especially, when prepared to furnish sharp edge and systematic particle orientation on the substrate, AgNPs can take advantage of surface-enhanced Raman spectroscopy (SERS). In this research, we suggested a synthetic method to immobilize the AgNP on metal oxide by utilizing Ag-thiolate and layered double hydroxide (LDH) as precursor and template, respectively. The layer-by-layer structure of LDH and Ag-thiolate transformed through reductive calcination to metal oxide and AgNP array. Physicochemical characterization, including powder X-ray diffraction, N2 adsorption–desorption, microscopies, and X-ray photoelectron spectroscopy, revealed that the AgNP with sufficient crystallinity and particle gap was obtained at relatively high calcination temperature, ~600 °C. UV-vis diffusion reflectance spectroscopy showed that the calcination temperature affected particle size and electronic structure of AgNP. The prepared materials were subjected to SERS tests toward 4-nitrothiophenol (4-NTP). The sample obtained at 600 °C exhibited 50 times higher substrate enhancement factor (SEF) than the one obtained at 400 °C, suggesting that the calcination temperature was a determining parameter to enhance SERS activity in current synthetic condition.
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Affiliation(s)
- Su-Bin Lee
- Department of Energy and Materials Engineering, Dongguk University-Seoul, Seoul 04620, Korea;
| | - Seung-Min Paek
- Department of Chemistry, Kyungpook National University, Daegu 41566, Korea
- Correspondence: (S.-M.P.); (J.-M.O.); Tel.: +82-53-950-5335 (S.-M.P.); +82-2-2260-4977 (J.-M.O.)
| | - Jae-Min Oh
- Department of Energy and Materials Engineering, Dongguk University-Seoul, Seoul 04620, Korea;
- Correspondence: (S.-M.P.); (J.-M.O.); Tel.: +82-53-950-5335 (S.-M.P.); +82-2-2260-4977 (J.-M.O.)
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Zienkiewicz-Strzałka M, Deryło-Marczewska A. Small AgNP in the Biopolymer Nanocomposite System. Int J Mol Sci 2020; 21:ijms21249388. [PMID: 33317218 PMCID: PMC7763337 DOI: 10.3390/ijms21249388] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2020] [Revised: 12/06/2020] [Accepted: 12/07/2020] [Indexed: 12/25/2022] Open
Abstract
In this work, ultra-small and stable silver nanoparticles (AgNP) on chitosan biopolymer (BP/AgP) were prepared by in situ reduction of the diamminesilver(I) complex ([Ag(NH3)2]+) to create a biostatic membrane system. The small AgNP (3 nm) as a stable source of silver ions, their crystal form, and homogeneous distribution in the whole solid membrane were confirmed by transmission electron microscopy (TEM), scanning electron microscopy (SEM), and atomic force microscopy (AFM). The X-ray photoelectron spectroscopy (XPS) and Auger analysis were applied to investigate the elemental composition, concentration, and chemical state of surface atoms. It was found that ultra-small metallic nanoparticles might form a steady source of silver ions and enhance the biostatic properties of solid membranes. Ultra-small AgNP with disturbed electronic structure and plasmonic properties may generate interaction between amine groups of the biopolymer for improving the homogeneity of the nanometallic layer. In this work, the significant differences between the typical way (deposition of ex-situ-prepared AgNP) and the proposed in-situ synthesis approach were determined. The improved thermal stability (by thermogravimetry and differential scanning calorimetry (TG/DSC) analysis) for BP/AgP was observed and explained by the presence of the protective layer of a low-molecular silver phase. Finally, the antibacterial activity of the BP/AgP nanocomposite was tested using selected bacteria biofilms. The grafted membrane showed clear inhibition properties by destruction and multiple damages of bacteria cells. The possible mechanisms of biocidal activity were discussed, and the investigation of the AgNP influence on the bacteria body was illustrated by AFM measurements. The results obtained concluded that the biopolymer membrane properties were significantly improved by the integration with ultra-small Ag nanoparticles, which added value to its applications as a biostatic membrane system for filtration and separation issues.
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Pryshchepa O, Pomastowski P, Buszewski B. Silver nanoparticles: Synthesis, investigation techniques, and properties. Adv Colloid Interface Sci 2020; 284:102246. [PMID: 32977142 DOI: 10.1016/j.cis.2020.102246] [Citation(s) in RCA: 85] [Impact Index Per Article: 21.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2020] [Revised: 08/15/2020] [Accepted: 08/18/2020] [Indexed: 12/19/2022]
Abstract
The unique silver properties, especially in the form of nanoparticles (NPs), allow to utilize them in numerous applications. For instance, Ag NPs can be utilized for the production of electronic and solar energy harvesting devices, in advanced analytical techniques (NALDI, SERS), catalysis and photocatalysis. Moreover, the Ag NPs can be useful in medicine for bioimaging, biosensing as well as in antibacterial and anticancer therapies. The Ag NPs utilization requires comprehensive knowledge about their features regarding the synthesis approaches as well as exploitation conditions. Unfortunately, a large number of scientific articles provide only restricted information according to the objects under investigation. Additionally, the results could be affected by artifacts introduced with exploited equipment, the utilized technique or sample preparation stages. However, it is rather difficult to get information about problems, which may occur during the studies. Thus, the review provides information about novel trends in the Ag NPs synthesis, among which the physical, chemical, and biological approaches can be found. Basic information about approaches for the control of critical parameters of NPs, i.e. size and shape, was also revealed. It was shown, that the reducing agent, stabilizer, the synthesis environment, including trace ions, have a direct impact on the Ag NPs properties. Further, the capabilities of modern analytical techniques for Ag NPs and nanocomposites investigations were shown, among other microscopic (optical, TEM, SEM, STEM, AFM), spectroscopic (UV-Vis, IR, Raman, NMR, electron spectroscopy, XRD), spectrometric (MALDI-TOF MS, SIMS, ICP-MS), and separation (CE, FFF, gel electrophoresis) techniques were described. The limitations and possible artifacts of the techniques were mentioned. A large number of presented techniques is a distinguishing feature, which makes the review different from others. Finally, the physicochemical and biological properties of Ag NPs were demonstrated. It was shown, that Ag NPs features are dependent on their basic parameters, such as size, shape, chemical composition, etc. At the end of the review, the modern theories of the Ag NPs toxic mechanism were shown in a way that has never been presented before. The review should be helpful for scientists in their own studies, as it can help to prepare experiments more carefully.
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28
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Cho HI, Yi S, Hwang JS, Seo JH, Lee JS. Roles of zwitterionic charges in polymers on synthesis of Ag seeds with anisotropic growth properties. J IND ENG CHEM 2020. [DOI: 10.1016/j.jiec.2020.05.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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29
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Agarwal RA. Nanoparticles fabrication from as-synthesized two dimensional Zn(II) coordination polymer. Polyhedron 2020. [DOI: 10.1016/j.poly.2020.114673] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Lee HK, Koh CS, Lo WS, Liu Y, Phang IY, Sim HY, Lee YH, Phan-Quang GC, Han X, Tsung CK, Ling XY. Applying a Nanoparticle@MOF Interface To Activate an Unconventional Regioselectivity of an Inert Reaction at Ambient Conditions. J Am Chem Soc 2020; 142:11521-11527. [PMID: 32508093 DOI: 10.1021/jacs.0c04144] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Here we design an interface between a metal nanoparticle (NP) and a metal-organic framework (MOF) to activate an inert CO2 carboxylation reaction and in situ monitor its unconventional regioselectivity at the molecular level. Using a Kolbe-Schmitt reaction as model, our strategy exploits the NP@MOF interface to create a pseudo high-pressure CO2 microenvironment over the phenolic substrate to drive its direct C-H carboxylation at ambient conditions. Conversely, Kolbe-Schmitt reactions usually demand high reaction temperature (>125 °C) and pressure (>80 atm). Notably, we observe an unprecedented CO2 meta-carboxylation of an arene that was previously deemed impossible in traditional Kolbe-Schmitt reactions. While the phenolic substrate in this study is fixed at the NP@MOF interface to facilitate spectroscopic investigations, free reactants could be activated the same way by the local pressurized CO2 microenvironment. These valuable insights create enormous opportunities in diverse applications including synthetic chemistry, gas valorization, and greenhouse gas remediation.
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Affiliation(s)
- Hiang Kwee Lee
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore 637371
| | - Charlynn Sher Koh
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore 637371
| | - Wei-Shang Lo
- Department of Chemistry, Merkert Chemistry Center, Boston College, Chestnut Hill, Massachusetts 02467, United States
| | - Yejing Liu
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore 637371
| | - In Yee Phang
- Institute of Materials Research and Engineering, Agency for Science, Technology and Research (A*STAR), 2 Fusionopolis Way, Innovis, #08-03, Singapore 138634
| | - Howard Yi Sim
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore 637371
| | - Yih Hong Lee
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore 637371
| | - Gia Chuong Phan-Quang
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore 637371
| | - Xuemei Han
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore 637371
| | - Chia-Kuang Tsung
- Department of Chemistry, Merkert Chemistry Center, Boston College, Chestnut Hill, Massachusetts 02467, United States
| | - Xing Yi Ling
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore 637371
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Kadian S, Manik G, Das N, Nehra P, Chauhan RP, Roy P. Synthesis, characterization and investigation of synergistic antibacterial activity and cell viability of silver-sulfur doped graphene quantum dot (Ag@S-GQDs) nanocomposites. J Mater Chem B 2020; 8:3028-3037. [PMID: 32186305 DOI: 10.1039/c9tb02823d] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The excessive use of traditional antibiotic and antibacterial agents has globally increased the growth of antibiotic-resistant bacteria that poses serious health risks. Therefore, the development of new generation antibacterial or antimicrobial agents for effective inhibition of bacterial growth is highly desired. In this study, we report a facile one-step synthesis approach for the preparation of a nanocomposite composed of silver nanoparticles (AgNPs) decorated with sulfur-doped graphene quantum dots (S-GQDs). The nanocomposite was comprehensively characterized using transmission electron microscopy (TEM), X-ray diffraction (XRD), UV-vis absorption spectra, Fourier transform infrared (FTIR) spectroscopy and X-ray photoelectron spectroscopy (XPS). The characterization results demonstrated that the AgNPs were closely and uniformly surrounded by the S-GQDs, and consequently, this ensured the dispersion and stability of the so formed nanocomposite (Ag@S-GQDs). Further, the antibacterial activity of the Ag@S-GQDs nanocomposite was investigated and compared with bare S-GQDs and AgNPs against Gram-positive S. aureus (MTCC 737) and Gram-negative P. aeruginosa (MTCC 424) bacteria using macrodilution and agar well diffusion methods. Minimum inhibitory concentration (MIC) values of 70 and 35 μg mL-1 of the Ag@S-GQDs nanocomposite were found to be sufficient to hinder the growth of P. aeruginosa and S. aureus. A fractional inhibition concentration (FIC) index below 0.5 confirmed the existence of a synergistic effect between AgNPs and S-GQDs in the Ag@S-GQDs nanocomposite. In addition, the cytotoxicity of the Ag@S-GQDs nanocomposite, AgNPs and S-GQDs was also investigated using HEK 293 cell lines. Interestingly, the Ag@S-GQDs nanocomposite exhibited superior cell viability as compared to AgNPs and S-GQDs. These improved antibacterial and biocompatibility data demonstrate that the Ag@S-GQDs nanocomposite can serve as a promising antibacterial agent for industry to fabricate next-generation self-sterile textiles, antibacterial coatings and useful health care products supporting cell viability.
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Affiliation(s)
- Sachin Kadian
- Department of Polymer and Process Engineering, Indian Institute of Technology Roorkee, Uttarakhand, India.
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Lee H, Jang HS, Cho DH, Lee J, Seong B, Kang G, Park YS, Nam KT, Lee YS, Byun D. Redox-Active Tyrosine-Mediated Peptide Template for Large-Scale Single-Crystalline Two-Dimensional Silver Nanosheets. ACS NANO 2020; 14:1738-1744. [PMID: 31999426 DOI: 10.1021/acsnano.9b07392] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Although self-assembly of various peptides has been widely applied, it is challenging to obtain single-crystalline and layer-by-layered nanostructures in a two-dimensional system. Here, we report a method for controlling the morphology and crystal growth at room temperature by a redox-active peptide template that can specifically co-assemble with metal ions. During the crystal growth, a silver ion-coordinated α-helical peptide (+3HN-YYACAYY-COO-) induces long-range atomic ordering at the air/water interface, which leads to multilayered single-crystalline silver nanosheets without an additional annealing process. Furthermore, this peptide template can facilitate efficient electron transfer between the independent metal nanosheets to improve electrochemical properties. We expect that this peptide template-based single-crystal growth method can be extended to synthesize other materials.
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Affiliation(s)
- Hyungdong Lee
- Department of Mechanical Engineering , Sungkyunkwan University , Jangan-gu, Suwon-si , Gyeonggi-do , Republic of Korea 16419
| | - Hyung-Seok Jang
- ZTI Biosciences, Inc. , Gangnam-gu, Seoul , Republic of Korea 06325
| | - Dae-Hyun Cho
- Department of Mechatronics , Gyeongnam National University of Science and Technology , Jinju-si , Gyeongsangnam-do , Republic of Korea 52725
| | - Jaehyun Lee
- Department of Mechanical Engineering , Sungkyunkwan University , Jangan-gu, Suwon-si , Gyeonggi-do , Republic of Korea 16419
| | - Baekhoon Seong
- Department of Mechanical Engineering , Sungkyunkwan University , Jangan-gu, Suwon-si , Gyeonggi-do , Republic of Korea 16419
| | - Giho Kang
- Department of Mechanical Engineering , Sungkyunkwan University , Jangan-gu, Suwon-si , Gyeonggi-do , Republic of Korea 16419
| | - Yong-Sun Park
- ZTI Biosciences, Inc. , Gangnam-gu, Seoul , Republic of Korea 06325
- Department of Material Science and Engineering , Seoul National University , Gwanak-gu, Seoul , Republic of Korea 08826
| | - Ki Tae Nam
- Department of Material Science and Engineering , Seoul National University , Gwanak-gu, Seoul , Republic of Korea 08826
| | - Yoon-Sik Lee
- School of Chemical and Biological Engineering , Seoul National University , Gwanak-gu, Seoul , Republic of Korea 08826
| | - Doyoung Byun
- Department of Mechanical Engineering , Sungkyunkwan University , Jangan-gu, Suwon-si , Gyeonggi-do , Republic of Korea 16419
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Shu M, He F, Li Z, Zhu X, Ma Y, Zhou Z, Yang Z, Gao F, Zeng M. Biosynthesis and Antibacterial Activity of Silver Nanoparticles Using Yeast Extract as Reducing and Capping Agents. NANOSCALE RESEARCH LETTERS 2020; 15:14. [PMID: 31950291 PMCID: PMC6965552 DOI: 10.1186/s11671-019-3244-z] [Citation(s) in RCA: 64] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/15/2019] [Accepted: 12/27/2019] [Indexed: 05/05/2023]
Abstract
Biosynthesis for the preparation of antimicrobial silver nanoparticles (Ag NPs) is a green method without the use of cytotoxic reducing and surfactant agents. Herein, shape-controlled and well-dispersed Ag NPs were biosynthesized using yeast extract as reducing and capping agents. The synthesized Ag NPs exhibited a uniform spherical shape and fine size, with an average size of 13.8 nm. The biomolecules of reductive amino acids, alpha-linolenic acid, and carbohydrates in yeast extract have a significant role in the formation of Ag NPs, which was proved by the Fourier transform infrared spectroscopy analysis. In addition, amino acids on the surface of Ag NPs carry net negative charges which maximize the electrostatic repulsion interactions in alkaline solution, providing favorable stability for more than a year without precipitation. The Ag NPs in combination treatment with ampicillin reversed the resistance in ampicillin-resistant E. coli cells. These monodispersed Ag NPs could be a promising alternative for the disinfection of multidrug-resistant bacterial strains, and they showed negligible cytotoxicity and good biocompatibility toward Cos-7 cells.
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Affiliation(s)
| | | | - Zhaohui Li
- Key Laboratory of Thin Film and Microfabrication (Ministry of Education), Department of Micro/Nano Electronics, School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai, 200240, People's Republic of China
| | - Xingzhong Zhu
- Key Laboratory of Thin Film and Microfabrication (Ministry of Education), Department of Micro/Nano Electronics, School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai, 200240, People's Republic of China
| | - Yujie Ma
- Key Laboratory of Thin Film and Microfabrication (Ministry of Education), Department of Micro/Nano Electronics, School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai, 200240, People's Republic of China
| | - Zhihua Zhou
- Key Laboratory of Thin Film and Microfabrication (Ministry of Education), Department of Micro/Nano Electronics, School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai, 200240, People's Republic of China
| | - Zhi Yang
- Key Laboratory of Thin Film and Microfabrication (Ministry of Education), Department of Micro/Nano Electronics, School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai, 200240, People's Republic of China.
| | - Feng Gao
- Key Laboratory of Thin Film and Microfabrication (Ministry of Education), Department of Micro/Nano Electronics, School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai, 200240, People's Republic of China.
| | - Min Zeng
- Key Laboratory of Thin Film and Microfabrication (Ministry of Education), Department of Micro/Nano Electronics, School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai, 200240, People's Republic of China.
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Kumar A, Das N, Satija NK, Mandrah K, Roy SK, Rayavarapu RG. A Novel Approach towards Synthesis and Characterization of Non-Cytotoxic Gold Nanoparticles Using Taurine as Capping Agent. NANOMATERIALS 2019; 10:nano10010045. [PMID: 31878144 PMCID: PMC7023053 DOI: 10.3390/nano10010045] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/22/2019] [Revised: 12/11/2019] [Accepted: 12/13/2019] [Indexed: 11/16/2022]
Abstract
Metal gold nanoparticles are of great interest due to their unique physico-chemical properties and their potential to be used as nano-probes in biosensors, drug delivery, and therapeutic applications. Currently, many capping agents are used for metal gold nanoparticles, such as cetyltrimethylammonium bromide (CTAB) and tri-sodium citrate that have been reported to be toxic and hinders biological applications. To address this issue, we report, for the first time, the use of taurine as a stable non-cytotoxic capping agent for synthesizing gold nanoparticles by using an in situ wet-chemical method. This facile method resulted in monodisperse gold nanospheres with a high yield and stability. Monodisperse gold nanospheres with average diameters of 6.9 nm and 46 nm were synthesized at a high yield with controlled morphology. Temperature played a critical role in determining the size of the taurine-capped gold nanoparticles. The subtle changes in the reaction parameters had a tremendous effect on the final size of nanoparticles and their stability. The synthesized nanoparticles were characterized by using optical spectroscopy, a ZetaSizer, a NanoSight, Fourier Transform Infrared (FTIR) spectroscopy, X-ray Diffraction (XRD), X-ray Photon Spectroscopy (XPS) and Electron Microscopy to understand their physico-chemical properties. Taurine was explored as a capping and stabilizing agent for gold nanospheres, which were evaluated for their toxicity responses towards human liver carcinoma cells (HepG2) via MTT assay.
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Affiliation(s)
- Akash Kumar
- Nanomaterial Toxicology Laboratory, Nanomaterial Toxicology Group, CSIR-Indian Institute of Toxicology Research (CSIR-IITR), Vishvigyan Bhawan, 31 Mahatma Gandhi Marg, Lucknow 226001, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Nabojit Das
- Nanomaterial Toxicology Laboratory, Nanomaterial Toxicology Group, CSIR-Indian Institute of Toxicology Research (CSIR-IITR), Vishvigyan Bhawan, 31 Mahatma Gandhi Marg, Lucknow 226001, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Neeraj Kumar Satija
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
- Developmental Toxicology Laboratory, Systems Toxicology & Health Risk Assessment Group, CSIR-Indian Institute of Toxicology Research (CSIR-IITR), Vishvigyan Bhawan, 31 Mahatma Gandhi Marg, Lucknow 226001, India
| | - Kapil Mandrah
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
- Analytical Chemistry Laboratory, Regulatory Toxicology Group, CSIR-Indian Institute of Toxicology Research (CSIR-IITR), Vishvigyan Bhawan, 31 Mahatma Gandhi Marg, Lucknow 226001, India
| | - Somendu Kumar Roy
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
- Analytical Chemistry Laboratory, Regulatory Toxicology Group, CSIR-Indian Institute of Toxicology Research (CSIR-IITR), Vishvigyan Bhawan, 31 Mahatma Gandhi Marg, Lucknow 226001, India
| | - Raja Gopal Rayavarapu
- Nanomaterial Toxicology Laboratory, Nanomaterial Toxicology Group, CSIR-Indian Institute of Toxicology Research (CSIR-IITR), Vishvigyan Bhawan, 31 Mahatma Gandhi Marg, Lucknow 226001, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
- Correspondence:
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Kumar N, Thomas S, Rao R, Maiti N, Kshirsagar RJ. Plasmon-Induced Dimerization of Thiazolidine-2,4-dione on Silver Nanoparticles: Revealed by Surface-Enhanced Raman Scattering Study. J Phys Chem A 2019; 123:9770-9780. [PMID: 31633920 DOI: 10.1021/acs.jpca.9b07367] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Surface-enhanced Raman scattering (SERS) study carried on thiazolidine-2,4-dione (TZD), a pharmacologically active heterocyclic compound, points to the presence of TZD dimer formed by plasmon-induced dimerization reaction of TZD on the surface of silver nanoparticles (Ag NP) at TZD concentrations of 10-3 M and above. The evidence for the presence of dimer was obtained from the appearance of a prominent band at 1566 cm-1 corresponding to the ν(C═C) band (a characteristic vibrational band observed for the Knoevenagel condensation reaction products) which is absent in the normal Raman scattering (NRS) spectra of TZD solid/solution. The observed spectrum compares well with the calculated spectrum of dimer obtained using density functional theory (DFT) calculations. The dimerization reaction is plausibly induced by the transfer of hot electrons generated by the nonradiative plasmon decay of Ag NP, and the proposed reaction mechanism is discussed. However, at lower concentrations (10-4-10-6 M), the characteristic dimer peak (1566 cm-1) is absent and the SERS spectra resemble more the NRS spectrum of TZD with a few changes. The spectral analysis supported by DFT calculations showed that TZD molecules undergo deprotonation and get adsorbed on the Ag NP surface as enolate forms. The proximity of TZD molecules on the surface of Ag NP is a necessary factor for the dimerization to occur. At lower concentrations, most molecules lie apart and reactions between molecules become less feasible, and they remain as monomers on the surface, while at higher concentrations the molecules are closer to each other on the Ag NP surface favoring the dimerization reaction to take place, leading to the formation of the dimer.
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Affiliation(s)
- Naveen Kumar
- Homi Bhabha National Institute , Anushaktinagar, Mumbai , 400 094 , India
| | | | - Rekha Rao
- Homi Bhabha National Institute , Anushaktinagar, Mumbai , 400 094 , India
| | - N Maiti
- Homi Bhabha National Institute , Anushaktinagar, Mumbai , 400 094 , India
| | - R J Kshirsagar
- Homi Bhabha National Institute , Anushaktinagar, Mumbai , 400 094 , India
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Wood Protection through Plasma Powder Deposition—An Alternative Coating Process. FORESTS 2019. [DOI: 10.3390/f10100898] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
In contrast to conventional coating processes such as varnishing, plasma powder deposition by means of an atmospheric pressure plasma jet on wood is not yet widely used. A key advantage of this process is that volatile organic compounds and organic solvents are avoided. In the present work, European beech (Fagus sylvatica L.) and pine sapwood (Pinus sylvestris L.) were coated with polymer (polyester), metal (aluminum coated silver) or metal oxide (bismuth oxide) particles. Furthermore, a layer system consisting of polyester and metal or metal oxide was investigated. The layer thickness and topography were analyzed with a laser scanning microscope and scanning electron microscope, revealing thicknesses of 2–22 µm depending on the coating material. In general, the chemical composition of the layers was determined using X-ray photoelectron spectroscopy and Fourier-transform infrared spectroscopy measurements. The coatings consisting of metal and metal oxide showed a band gap and plasmon resonance in the range of 540 and 450 nm. Through this absorption, the wood may be protected against ultraviolet (UV) radiation. In the water uptake and release tests, the polyester layers exhibited a reduction of water vapor absorption after 24 h in 100% relative humidity (RH) by 53%–66%, whereas the pure metal oxide layers indicated the best desorption performance. The combination of metal oxide and polyester in the one-layer system combines the protection properties of the single coatings against water vapor and UV radiation.
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Muniz-Miranda F, Pedone A, Muniz-Miranda M. Raman and Computational Study on the Adsorption of Xanthine on Silver Nanocolloids. ACS OMEGA 2018; 3:13530-13537. [PMID: 31458060 PMCID: PMC6644810 DOI: 10.1021/acsomega.8b02174] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/26/2018] [Accepted: 10/08/2018] [Indexed: 06/09/2023]
Abstract
Xanthine is a nucleobase, deriving from adenine and guanine by deamination and oxidation processes, which may deposit in the human body causing diseases, similar to uric acid. Here, we have investigated the adsorption of xanthine on silver colloidal nanoparticles by means of surface-enhanced Raman scattering (SERS) with an exciting radiation in the near-infrared spectral region, where interference due to fluorescence does not occur, along with density functional theory calculations of molecule/metal model systems. By adopting a combined experimental and computational approach, we have identified the "marker" SERS bands of xanthine and the tautomer that preferentially binds the silver particles, as well as the molecular group involved in the interaction with metal. This investigation allows using the FT-SERS spectroscopy for biosensory and diagnostic purposes in body fluids, detecting abnormal levels of xanthine, and preventing metabolic diseases.
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Affiliation(s)
- Francesco Muniz-Miranda
- Department
of Chemical and Geological Sciences (DSCG), University of Modena and Reggio Emilia (UniMORE), Via Campi 103, 41125 Modena, Italy
| | - Alfonso Pedone
- Department
of Chemical and Geological Sciences (DSCG), University of Modena and Reggio Emilia (UniMORE), Via Campi 103, 41125 Modena, Italy
| | - Maurizio Muniz-Miranda
- Department
of Chemistry “Ugo Schiff”, University of Florence (UniFI), Via della Lastruccia 3, 50019 Sesto Fiorentino, Italy
- Institute
of Complex Systems (CNR), Via Madonna del Piano 10, 50019 Sesto Fiorentino, Italy
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Gellini C, Muniz-Miranda F, Pedone A, Muniz-Miranda M. SERS active Ag-SiO 2 nanoparticles obtained by laser ablation of silver in colloidal silica. BEILSTEIN JOURNAL OF NANOTECHNOLOGY 2018; 9:2396-2404. [PMID: 30254834 PMCID: PMC6142779 DOI: 10.3762/bjnano.9.224] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/19/2018] [Accepted: 08/21/2018] [Indexed: 06/08/2023]
Abstract
Highly stable Ag-SiO2 nanoparticle composites were first obtained by laser ablation of a silver target in an aqueous colloidal dispersion of silica and examined by UV-vis absorption spectroscopy, transmission electron microscopy and Raman spectroscopy. The surface enhanced Raman scattering (SERS) activity of these nanocomposites was tested using 2,2'-bipyridine as a molecular reporter and excitation in the visible and near-IR spectral regions. The computational DFT approach provided evidence of ligand adsorption on positively charged adatoms of the silver nanostructured surface, in a very similar way to the metal/molecule interaction occurring in the corresponding Ag(I) coordination compound.
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Affiliation(s)
- Cristina Gellini
- Department of Chemistry “Ugo Schiff”, University of Florence, Via della Lastruccia 3, 50019 Sesto Fiorentino, Italy
| | - Francesco Muniz-Miranda
- Department of Chemical and Geological Sciences, University of Modena and Reggio Emilia, Via Campi 103, 41125 Modena, Italy
- Center for Molecular Modeling, Ghent University, Technologiepark 903, 9052 Zwijnaarde, Belgium
| | - Alfonso Pedone
- Department of Chemical and Geological Sciences, University of Modena and Reggio Emilia, Via Campi 103, 41125 Modena, Italy
| | - Maurizio Muniz-Miranda
- Department of Chemistry “Ugo Schiff”, University of Florence, Via della Lastruccia 3, 50019 Sesto Fiorentino, Italy
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Mourdikoudis S, Pallares RM, Thanh NTK. Characterization techniques for nanoparticles: comparison and complementarity upon studying nanoparticle properties. NANOSCALE 2018; 10:12871-12934. [PMID: 29926865 DOI: 10.1039/c8nr02278j] [Citation(s) in RCA: 537] [Impact Index Per Article: 89.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Nanostructures have attracted huge interest as a rapidly growing class of materials for many applications. Several techniques have been used to characterize the size, crystal structure, elemental composition and a variety of other physical properties of nanoparticles. In several cases, there are physical properties that can be evaluated by more than one technique. Different strengths and limitations of each technique complicate the choice of the most suitable method, while often a combinatorial characterization approach is needed. In addition, given that the significance of nanoparticles in basic research and applications is constantly increasing, it is necessary that researchers from separate fields overcome the challenges in the reproducible and reliable characterization of nanomaterials, after their synthesis and further process (e.g. annealing) stages. The principal objective of this review is to summarize the present knowledge on the use, advances, advantages and weaknesses of a large number of experimental techniques that are available for the characterization of nanoparticles. Different characterization techniques are classified according to the concept/group of the technique used, the information they can provide, or the materials that they are destined for. We describe the main characteristics of the techniques and their operation principles and we give various examples of their use, presenting them in a comparative mode, when possible, in relation to the property studied in each case.
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Affiliation(s)
- Stefanos Mourdikoudis
- Biophysics Group, Department of Physics and Astronomy, University College London, London, WC1E 6BT, UK.
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Moreira RL, Lobo RPSM, Dias A. Infrared dispersion analysis and Raman scattering spectra of taurine single crystals. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2018; 188:276-284. [PMID: 28732285 DOI: 10.1016/j.saa.2017.07.017] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/25/2017] [Revised: 07/11/2017] [Accepted: 07/12/2017] [Indexed: 06/07/2023]
Abstract
A comprehensive set of optical vibrational modes of monoclinic taurine crystals was determined by Raman scattering, and infrared reflectivity and transmission spectroscopies. By using appropriate scattering/reflection geometries, the vibrational modes were resolved by polarization and the most relevant modes of the crystal could be assigned. In particular, we were able to review the symmetry of the gerade modes and to resolve ambiguities in the literature. Owing to the non-orthogonal character of Bu modes in monoclinic crystals (lying on the optic axial plane), we carried out a generalized Lorentz dispersion analysis consisting of simultaneous adjust of infrared-reflectivity spectra at various light polarization angles. The Au modes (parallel to the C2-axis) were treated within the classical Lorentz model. The behavior of off-diagonal and diagonal terms of the complex dielectric tensors and the presence of anomalous dispersion were discussed as consequences of the low symmetry of the crystal.
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Affiliation(s)
- Roberto L Moreira
- Departamento de Física, ICEx, Universidade Federal de Minas Gerais, C.P. 702, Belo Horizonte, MG 30123-970, Brazil.
| | - Ricardo P S M Lobo
- LPEM, ESPCI Paris, PSL Research University, CNRS, F-75005 Paris, France; Sorbonne Universités, Univ. Paris 6, CNRS, LPEM, F-75005 Paris, France
| | - Anderson Dias
- Departamento de Química, Universidade Federal de Ouro Preto, Campus Morro do Cruzeiro, ICEB II, Ouro Preto, MG 35400-000, Brazil
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Zhou W, Lu L, Chen D, Wang Z, Zhai J, Wang R, Tan G, Mao J, Yu P, Ning C. Construction of high surface potential polypyrrole nanorods with enhanced antibacterial properties. J Mater Chem B 2018; 6:3128-3135. [DOI: 10.1039/c7tb03085a] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
High surface potential polypyrrole nanorods with enhanced antibacterial properties.
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Maheswari N, Muralidharan G. Ag-Incorporated CeO2 nano cauliflowers for high-performance supercapacitor devices. NEW J CHEM 2017. [DOI: 10.1039/c7nj00817a] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This cauliflower-like morphological structures significantly inflate the electrochemical nature of the material.
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Affiliation(s)
- Nallappan Maheswari
- Department of Physics
- Gandhigram Rural Institute – Deemed University
- Dindigul
- India
| | - Gopalan Muralidharan
- Department of Physics
- Gandhigram Rural Institute – Deemed University
- Dindigul
- India
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