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Fabrication of Ag NPs decorated on electrospun PVA/PEI nanofibers as SERS substrate for detection of enrofloxacin. JOURNAL OF FOOD MEASUREMENT AND CHARACTERIZATION 2022. [DOI: 10.1007/s11694-022-01299-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Nair AK, Sukumaran Nair KM, Thomas S, Rouxel D, Alwarappan S, Kalarikkal N. In Situ Synthesis of Silver Nanospheres, Nanocubes, and Nanowires over Boron-Doped Graphene Sheets for Surface-Enhanced Raman Scattering Application and Enzyme-Free Detection of Hydrogen Peroxide. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:13603-13614. [PMID: 30350693 DOI: 10.1021/acs.langmuir.8b02005] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
An effective in situ synthesis strategy is demonstrated for the preparation of silver nanostructures (nanospheres (NSs), nanocubes (NCs), and nanowires (NWs)) on the surface of boron-doped graphene (BG). Further, these functional nanomaterials are employed for the surface-enhanced Raman scattering (SERS) and non-enzymatic electrochemical detection of H2O2. The results confirm the superior performance of BG-Ag nanostructures as SERS platform. Among various geometries of silver nanoparticles studied in this work, we find that the AgNCs over BG (BG-AgNC) present outstanding SERS performance for detecting 4-mercaptobenzoic acid, with a limit of detection of 1.0 × 10-13 M. Furthermore, BG-AgNC exhibits excellent capability to detect melamine as low as 1.0 × 10-9 M. Electrochemical results confirm that the BG-AgNW-based platform exhibits a superior biosensing performance toward H2O2 detection. The enhanced performance is due to the presence of graphene, which improves the conductivity and provides more active sites. The synthesis of doped graphene with metallic nanoparticles described in this work is expected to be a key strategy for the development of an efficient SERS and electrochemical sensor that offers simplicity, cost-effectiveness, long-term stability, and better reproducibility.
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Affiliation(s)
- Anju K Nair
- International and Inter University Centre for Nanoscience and Nanotechnology , Mahatma Gandhi University , Kottayam - 686 560 , Kerala , India
- Department of Physics , St Teresas's College Ernakulam - 682011 , Kerala , India
| | | | - Sabu Thomas
- International and Inter University Centre for Nanoscience and Nanotechnology , Mahatma Gandhi University , Kottayam - 686 560 , Kerala , India
- School of Chemical Sciences , Mahatma Gandhi University , Kottayam - 686 560 , Kerala , India
| | - Didier Rouxel
- UMR CNRS 7198, Facult́e des Sciences et Techniques , Institut Jean Lamour , Campus Victor Grignard , BP 70239, 54506 , Vandoeuvre-les-Nancy Cedex , France
| | - Subbiah Alwarappan
- CSIR - Central Electrochemical Research Institute (CSIR-CECRI) Karaikudi - 630 003 , Tamil Nadu , India
| | - Nandakumar Kalarikkal
- International and Inter University Centre for Nanoscience and Nanotechnology , Mahatma Gandhi University , Kottayam - 686 560 , Kerala , India
- School of Pure and Applied Physics , Mahatma Gandhi University , Kottayam - 686 560 , Kerala India
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Ji H, Zhao R, Li Y, Sun B, Li Y, Zhang N, Qiu J, Li X, Wang C. Robust and durable superhydrophobic electrospun nanofibrous mats via a simple Cu nanocluster immobilization for oil-water contamination. Colloids Surf A Physicochem Eng Asp 2018. [DOI: 10.1016/j.colsurfa.2017.10.064] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Hu W, Cao X. Monitoring Reaction Paths Using Vibrational Spectroscopies: The Case of the Dehydrogenation of Propane toward Propylene on Pd-Doped Cu(111) Surface. Molecules 2018; 23:E126. [PMID: 29320428 PMCID: PMC6017320 DOI: 10.3390/molecules23010126] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2017] [Revised: 01/04/2018] [Accepted: 01/05/2018] [Indexed: 11/16/2022] Open
Abstract
Monitoring reaction paths is not only a fundamental scientific issue but also helps us to understand and optimize the catalytic process. Infrared (IR) and Raman spectroscopies are powerful tools for detecting particular molecules or intermediate products as a result of their ability to provide the molecular "finger-print". However, theoretical modeling for the vibrational spectra of molecular adsorbates on metallic surfaces is a long-standing challenge, because accurate descriptions of the electronic structure for both the metallic substrates and adsorbates are required. In the present work, we applied a quasi-analytical IR and Raman simulation method to monitor the dehydrogenation of propane towards propylene on a Pd-doped Cu(111) surface in real-time. Different Pd ensembles were used to construct the single-atom catalyst (SAC). We found that the number of sublayer Pd atoms could only affect the intensity of the peak rather than the peak position on the vibrational spectra. However, with the dehydrogenation reaction proceeding, both IR and Raman spectra were changed greatly, which indicates that every reaction step can be distinguished from the point of view of vibrational spectroscopies. Additionally, we found that the catalytic process, which starts from different initial states, shows different spectral profiles. The present results suggest that the vibrational spectroscopies obtained by the high-precision simulations pave the way for identifying different catalytic reaction paths.
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Affiliation(s)
- Wei Hu
- School of Chemistry and Materials Science, University of Science and Technology of China, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), Hefei 230026, China.
| | - Xinrui Cao
- Department of Physics and Institute of Theoretical Physics and Astrophysics, Xiamen University, Xiamen 361005, China.
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Liu Z, Jia L, Yan Z, Bai L. Plasma-treated electrospun nanofibers as a template for the electrostatic assembly of silver nanoparticles. NEW J CHEM 2018. [DOI: 10.1039/c8nj01151f] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Silver nanoparticles assembled on a plasma treated electrospun nanofiber membrane could show excellent SERS effect.
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Affiliation(s)
- Zhicheng Liu
- School of Materials Science and Engineering
- North University of China
- Taiyuan 030051
- China
- Department of Mechanical Engineering
| | - Lu Jia
- School of Materials Science and Engineering
- North University of China
- Taiyuan 030051
- China
| | - Zhaodong Yan
- School of Materials Science and Engineering
- North University of China
- Taiyuan 030051
- China
| | - Lu Bai
- School of Chemical Engineering and Technology
- North University of China
- Taiyuan 030051
- China
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Gulina LB, Tolstoy VP, Tolstobrov EV. Facile synthesis of 2D silver nanocrystals by a gas–solution interface technique. MENDELEEV COMMUNICATIONS 2017. [DOI: 10.1016/j.mencom.2017.11.033] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Liang X, Zhang H, Xu C, Cao D, Gao Q, Cheng S. Condensation effect-induced improved sensitivity for SERS trace detection on a superhydrophobic plasmonic nanofibrous mat. RSC Adv 2017. [DOI: 10.1039/c7ra09194j] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Superhydrophobic PAN/noble metal nanofibrous mats prove to be highly SERS-sensitive substrates for the trace detection of analyte molecules due to the condensation effect.
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Affiliation(s)
- Xiaohong Liang
- College of Chemistry, Chemical Engineering and Materials Science
- Soochow University
- Suzhou
- China
| | - Han Zhang
- College of Chemistry, Chemical Engineering and Materials Science
- Soochow University
- Suzhou
- China
| | - Cheng Xu
- College of Chemistry, Chemical Engineering and Materials Science
- Soochow University
- Suzhou
- China
| | - Ding Cao
- College of Chemistry, Chemical Engineering and Materials Science
- Soochow University
- Suzhou
- China
| | - Qiang Gao
- Key Laboratory of Eco-Textiles
- Ministry of Education
- Jiangnan University
- Wuxi 214122
- China
| | - Si Cheng
- College of Chemistry, Chemical Engineering and Materials Science
- Soochow University
- Suzhou
- China
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Geng Y, Zhang P, Wang Q, Liu Y, Pan K. Novel PAN/PVP Janus ultrafine fiber membrane and its application for biphasic drug release. J Mater Chem B 2017; 5:5390-5396. [DOI: 10.1039/c7tb00929a] [Citation(s) in RCA: 58] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Materials with Janus structures have attracted significant attention in recent years.
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Affiliation(s)
- Yuting Geng
- Beijing University of Chemical Technology
- Materials Science and Engineering
- Beijing
- China
| | - Pan Zhang
- Beijing University of Chemical Technology
- Materials Science and Engineering
- Beijing
- China
| | - Qiutong Wang
- Beijing University of Chemical Technology
- Materials Science and Engineering
- Beijing
- China
| | - Yangxiu Liu
- Beijing University of Chemical Technology
- Materials Science and Engineering
- Beijing
- China
| | - Kai Pan
- Beijing University of Chemical Technology
- Materials Science and Engineering
- Beijing
- China
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Ji C, Ma L, Yin M, Yang W, Pan K. A Cyanine Dye Encapsulated Porous Fibrous Mat for Naked-Eye Ammonia Sensing. Chem Asian J 2016; 11:2316-21. [DOI: 10.1002/asia.201600818] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2016] [Indexed: 11/08/2022]
Affiliation(s)
- Chendong Ji
- State Key Laboratory of Chemical Resource Engineering; Key Laboratory of Carbon Fiber and Functional Polymers of Ministry of Education; Beijing Laboratory of Biomedical Materials; Beijing University of Chemical Technology; Beijing 100029 China
| | - Lijing Ma
- State Key Laboratory of Chemical Resource Engineering; Key Laboratory of Carbon Fiber and Functional Polymers of Ministry of Education; Beijing Laboratory of Biomedical Materials; Beijing University of Chemical Technology; Beijing 100029 China
| | - Meizhen Yin
- State Key Laboratory of Chemical Resource Engineering; Key Laboratory of Carbon Fiber and Functional Polymers of Ministry of Education; Beijing Laboratory of Biomedical Materials; Beijing University of Chemical Technology; Beijing 100029 China
| | - Wantai Yang
- State Key Laboratory of Chemical Resource Engineering; Key Laboratory of Carbon Fiber and Functional Polymers of Ministry of Education; Beijing Laboratory of Biomedical Materials; Beijing University of Chemical Technology; Beijing 100029 China
| | - Kai Pan
- State Key Laboratory of Chemical Resource Engineering; Key Laboratory of Carbon Fiber and Functional Polymers of Ministry of Education; Beijing Laboratory of Biomedical Materials; Beijing University of Chemical Technology; Beijing 100029 China
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