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题名: Enhanced sulfur dioxide electrooxidation performance on a modified XC-72 carbon catalyst
作者: Zhao, Qing1, 2;  Hou, Ming1;  Jiang, Shangfeng1, 2;  Ai, Jun1;  Zheng, Limin1;  Shao, Zhigang1
关键词: Modified XC-72 ;  Pyridinic N ;  SO2 electrooxidation ;  Pyrolysis ;  Optimized pore structure
刊名: JOURNAL OF SOLID STATE ELECTROCHEMISTRY
发表日期: 2017-11-01
DOI: 10.1007/s10008-017-3633-0
卷: 21, 期:11, 页:3113-3120
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: Vulcan XC-72 is a carbon catalyst that is widely used in electrochemistry. The electrooxidation of SO2 plays a significant role in the domain of environmental protection. In this work, successive thermal and pyrolytic processes were applied to Vulcan XC-72 in order to obtain a modified catalyst that promotes SO2 electrooxidation to a much greater degree than Vulcan XC-72 does. The preparation of this modified XC-72 involved three steps: doping, pore creation, and carbonization. These modification processes were shown to greatly increase the catalytic activity of the modified XC-72 during SO2 electrooxidation. The catalytic performance of the modified XC-72 towards SO2 electrooxidation was characterized via linear sweep voltammograms and cyclic voltammograms; the results showed that the onset potential and the E (imax/2) obtained with the modified XC-72 were 60 mV and 128 mV lower, respectively, than attained with Vulcan XC-72. The structural and physical properties of the modified XC-72 were characterized using TEM, XPS, and BET. The increased surface area and optimized pore structure of the modified XC-72, as well as the presence of pyridinic N constituents in this material, are believed to contribute to its enhanced capacity to catalyze the electrooxidation of SO2.
关键词[WOS]: MEMBRANE FUEL-CELLS ;  ACIDIC MEDIA ;  ELECTROCHEMICAL-BEHAVIOR ;  SO2 ADSORPTION ;  AQUEOUS SO2 ;  HYDROGEN-PRODUCTION ;  ACTIVATED CARBONS ;  GOLD ELECTRODES ;  OXIDATION ;  ELECTROCATALYSTS
语种: 英语
WOS记录号: WOS:000413763100005
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/149706
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, Fuel Cell Syst & Engn Lab, 457 Zhongshan Rd, Dalian 116023, Peoples R China
2.Univ Chinese Acad Sci, 19A Yuquan Rd, Beijing 100049, Peoples R China

Recommended Citation:
Zhao, Qing,Hou, Ming,Jiang, Shangfeng,et al. Enhanced sulfur dioxide electrooxidation performance on a modified XC-72 carbon catalyst[J]. JOURNAL OF SOLID STATE ELECTROCHEMISTRY,2017,21(11):3113-3120.
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