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Title: A hydrogen peroxide electrochemical sensor based on silver nanoparticles decorated three-dimensional graphene

A facile strategy has been developed to synthesize sliver nanoparticles (Ag NPs) decorated three-dimensional graphene (3DG) through hydrothermal process. The AgNPs-3DG composites are directly fabricated into a free standing sensing electrode for electrochemical detection of hydrogen peroxide (H{sub 2}O{sub 2}) in phosphate buffered solutions. Various techniques equipments including scanning electron microscopy, X-ray diffraction, and Raman spectroscopy are used to characterize the morphology and structure of the as-prepared composite. The electrochemical experiments reveal the AgNPs-3DG based biosensor exhibits fast amperometric sensing, low detection limitation, wide linear responding range, and perfect selectivity for non-enzyme H{sub 2}O{sub 2} detection, indicating the well synergistic effect of Ag NPs high electrocatalytic activity and 3DG high conductivity and large surface area.
Authors:
; ; ; ;  [1] ; ;  [1] ;  [2]
  1. Key Laboratory for Organic Electronics and Information Displays (KLOEID), Nanjing University of Posts and Telecommunications, Nanjing 210023 (China)
  2. (IAM), Nanjing Tech University, 30 South Puzhu Road, Nanjing 211816 (China)
Publication Date:
OSTI Identifier:
22300264
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 104; Journal Issue: 24; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
77 NANOSCIENCE AND NANOTECHNOLOGY; AMPEROMETRY; BUFFERS; DETECTION; ELECTRIC CONDUCTIVITY; ELECTROCATALYSTS; ELECTROCHEMISTRY; GRAPHENE; HYDROGEN PEROXIDE; PHOSPHATES; RAMAN SPECTROSCOPY; SCANNING ELECTRON MICROSCOPY; SILVER; SOLUTIONS; SURFACE AREA; X-RAY DIFFRACTION NANOPARTICLES