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Title: Preparation of graphene–Ag composites and their application for electrochemical detection of chloride

Abstract

Highlights: ► Graphene–Ag composites were prepared in situ using ascorbic acid as green reducing agent. ► The morphology of Ag particles was irregular sheet and Ag particles homogeneously distributed on the graphene matrix. ► The surface-enhanced Raman scattering enhancement factor of D band is 5.85 for composites. ► The composites exhibited good sensitivity for the detection of chloride ions. -- Abstract: Graphene–Ag composites were prepared in situ using ascorbic acid as green reducing agent. The composites were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), high-resolution transmission electron microscopy (HRTEM), selected-area electronic diffraction (SAED), and Raman spectrometer. It was showed that Ag particles homogeneously distributed on the graphene matrix. The morphology of Ag particles was irregular sheet with (1 1 1) basal plane. The surface-enhanced Raman scattering (SERS) enhancement factor of D band is 5.85 for composites. The application of the composites for electrochemical detection of chloride was studied by cyclic voltammetry. The composites exhibited good sensitivity for the detection of chloride ions. The maximum peak current of cyclic voltammetry curve in 5 mM KCl was 0.80 mA. In the range of 500 μM to 50 mM for Cl{sup −}, the current response was proportionalmore » and linear to the Cl{sup −} concentration. The sensitivity to the detection for Cl{sup −} was 0.059 (mA/mM) and the detection limit was 61 μM for Cl{sup −}. It indicates graphene–Ag composites would be a competitive material for detection of halide.« less

Authors:
 [1]; ; ; ; ;  [1]
  1. School of Materials Science and Engineering, Beihang University, Beijing 100191 (China)
Publication Date:
OSTI Identifier:
22215554
Resource Type:
Journal Article
Journal Name:
Materials Research Bulletin
Additional Journal Information:
Journal Volume: 47; Journal Issue: 11; Other Information: Copyright (c) 2012 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0025-5408
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; 36 MATERIALS SCIENCE; ASCORBIC ACID; DETECTION; ELECTRON DIFFRACTION; GRAPHENE; POTASSIUM CHLORIDES; RAMAN EFFECT; RAMAN SPECTROSCOPY; REDUCING AGENTS; SCANNING ELECTRON MICROSCOPY; SENSITIVITY; SURFACES; SYNTHESIS; TRANSMISSION ELECTRON MICROSCOPY; VOLTAMETRY; X-RAY DIFFRACTION

Citation Formats

Yu, Mei, E-mail: yumei@buaa.edu.cn, Liu, Pengrui, Zhang, Shilu, Liu, Jianhua, An, Junwei, and Li, Songmei. Preparation of graphene–Ag composites and their application for electrochemical detection of chloride. United States: N. p., 2012. Web. doi:10.1016/J.MATERRESBULL.2012.08.013.
Yu, Mei, E-mail: yumei@buaa.edu.cn, Liu, Pengrui, Zhang, Shilu, Liu, Jianhua, An, Junwei, & Li, Songmei. Preparation of graphene–Ag composites and their application for electrochemical detection of chloride. United States. doi:10.1016/J.MATERRESBULL.2012.08.013.
Yu, Mei, E-mail: yumei@buaa.edu.cn, Liu, Pengrui, Zhang, Shilu, Liu, Jianhua, An, Junwei, and Li, Songmei. Thu . "Preparation of graphene–Ag composites and their application for electrochemical detection of chloride". United States. doi:10.1016/J.MATERRESBULL.2012.08.013.
@article{osti_22215554,
title = {Preparation of graphene–Ag composites and their application for electrochemical detection of chloride},
author = {Yu, Mei, E-mail: yumei@buaa.edu.cn and Liu, Pengrui and Zhang, Shilu and Liu, Jianhua and An, Junwei and Li, Songmei},
abstractNote = {Highlights: ► Graphene–Ag composites were prepared in situ using ascorbic acid as green reducing agent. ► The morphology of Ag particles was irregular sheet and Ag particles homogeneously distributed on the graphene matrix. ► The surface-enhanced Raman scattering enhancement factor of D band is 5.85 for composites. ► The composites exhibited good sensitivity for the detection of chloride ions. -- Abstract: Graphene–Ag composites were prepared in situ using ascorbic acid as green reducing agent. The composites were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), high-resolution transmission electron microscopy (HRTEM), selected-area electronic diffraction (SAED), and Raman spectrometer. It was showed that Ag particles homogeneously distributed on the graphene matrix. The morphology of Ag particles was irregular sheet with (1 1 1) basal plane. The surface-enhanced Raman scattering (SERS) enhancement factor of D band is 5.85 for composites. The application of the composites for electrochemical detection of chloride was studied by cyclic voltammetry. The composites exhibited good sensitivity for the detection of chloride ions. The maximum peak current of cyclic voltammetry curve in 5 mM KCl was 0.80 mA. In the range of 500 μM to 50 mM for Cl{sup −}, the current response was proportional and linear to the Cl{sup −} concentration. The sensitivity to the detection for Cl{sup −} was 0.059 (mA/mM) and the detection limit was 61 μM for Cl{sup −}. It indicates graphene–Ag composites would be a competitive material for detection of halide.},
doi = {10.1016/J.MATERRESBULL.2012.08.013},
journal = {Materials Research Bulletin},
issn = {0025-5408},
number = 11,
volume = 47,
place = {United States},
year = {2012},
month = {11}
}