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题名: Facile synthesis of silver nanoparticles supported on three dimensional graphene oxide/carbon black composite and its application for oxygen reduction reaction
作者: Yuan, Lizhi1, 2;  Jiang, Luhua1;  Liu, Jing1, 2;  Xia, Zhangxun1, 2;  Wang, Suli1;  Sun, Gongquan1
关键词: Silver ;  graphene oxide ;  Carbon black ;  Oxygen reduction reaction ;  Electrocatalyst
刊名: ELECTROCHIMICA ACTA
发表日期: 2014-07-20
DOI: 10.1016/j.electacta.2014.04.137
卷: 135, 页:168-174
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Electrochemistry
研究领域[WOS]: Electrochemistry
英文摘要: A 3D graphene oxide/carbon sphere supported silver composite (Ag/GO/C) was synthesized using graphene oxide as the reducing agent. The reducing process of Ag+ was monitored by the ultra violet-visible (UV-vis) absorption spectrometer and the physical properties of the Ag/GO/C composite were characterized by Fourier transform infrared spectrometer (FTIR), transmission electron microscopy (TEM), X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS). The results demonstrated that the dispersive Ag nanoparticles are anchored uniformly on the surface of GO sheets with a mean size of about 6.9 nm. With introducing carbon black, the Ag nanoparticles aggregated slightly. Compared with its counterpart Ag/GO, the Ag/GO/C composite showed a significantly enhanced activity towards the oxygen reduction reaction in alkaline media. The enhancement can be ascribed to the 3D composite support, which not only improves the electrical conductivity, but also enforces the mass transport in the catalyst layer facilitating the reactants access to the active sites. Moreover, the Ag/GO/C composite exhibits good tolerance to alcohols, carbonates and tetramethylammonium hydroxide. This work is expected to open a new pathway to use GO as a reducing agent to synthesize electrocatalysts without surfactants. Crown Copyright (C) 2014 Published by Elsevier Ltd. All rights reserved.
关键词[WOS]: METAL-FREE ELECTROCATALYSTS ;  MEMBRANE FUEL-CELLS ;  ALKALINE MEDIA ;  AG NANOPARTICLES ;  CATHODE ELECTROCATALYST ;  POLYCRYSTALLINE SILVER ;  CATALYTIC-ACTIVITY ;  CARBON ;  OXIDE ;  PERFORMANCE
语种: 英语
WOS记录号: WOS:000339692600023
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/145601
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian Natl Lab Clean Energy, Div Fuel Cell & Battery, Dalian 116023, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100039, Peoples R China

Recommended Citation:
Yuan, Lizhi,Jiang, Luhua,Liu, Jing,et al. Facile synthesis of silver nanoparticles supported on three dimensional graphene oxide/carbon black composite and its application for oxygen reduction reaction[J]. ELECTROCHIMICA ACTA,2014,135:168-174.
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