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题名: Synthesis of Fe/Fe3C nanoparticles encapsulated in nitrogen-doped carbon with single-source molecular precursor for the oxygen reduction reaction
作者: Wang, Jing1, 2;  Wang, Guoxiong1;  Miao, Shu3;  Jiang, Xiaole1, 2;  Li, Jiayuan1, 2;  Bao, Xinhe1, 3
刊名: CARBON
发表日期: 2014-08-01
DOI: 10.1016/j.carbon.2014.04.017
卷: 75, 页:381-389
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences ;  Technology
类目[WOS]: Chemistry, Physical ;  Materials Science, Multidisciplinary
研究领域[WOS]: Chemistry ;  Materials Science
英文摘要: Ammonium ferric citrate (AFC) was used as a single-source molecular precursor to prepare Fe/Fe3C nanoparticles encapsulated in nitrogen-doped carbon by pyrolysis in Ar atmosphere followed by acid-leaching. Comparative studies, using citric acid and ferric citrate as the precursors, indicated that the ammonia and ferric ion in AFC and the pyrolysis temperature affected the composition of iron species and the properties of carbon in AFC-derived materials. Above the pyrolysis temperature of 600 degrees C, the iron species were Fe/Fe3C, and the carbon had a hollow graphitic nanoshell structure in AFC-derived materials. The specific surface area and content of nitrogen element decreased with increasing pyrolysis temperature. The AFC-derived material pyrolyzed at 600 C had the optimal graphitization degree, specific surface area (489 m(2) g(-1)) and content of nitrogen (1.8 wt.%), thus resulted in the greatest activity for oxygen reduction reaction among the AFC-derived materials pyrolyzed at different temperatures. The AFC-derived material pyrolyzed at 600 degrees C exhibited improved methanol-resistance ability compared with Pt/C catalyst. (C) 2014 Elsevier Ltd. All rights reserved.
关键词[WOS]: ELECTROLYTE FUEL-CELLS ;  MICROWAVE IRRADIATION ;  ANODE CATALYST ;  IRON ;  PERFORMANCE ;  METAL ;  ELECTROCATALYSTS ;  ACID ;  NANOSTRUCTURES ;  NANOCOMPOSITES
语种: 英语
WOS记录号: WOS:000336877600040
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/145769
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, State Key Lab Catalysis, Dalian 116023, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100039, Peoples R China
3.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian Natl Lab Clean Energy, Dalian 116023, Peoples R China

Recommended Citation:
Wang, Jing,Wang, Guoxiong,Miao, Shu,et al. Synthesis of Fe/Fe3C nanoparticles encapsulated in nitrogen-doped carbon with single-source molecular precursor for the oxygen reduction reaction[J]. CARBON,2014,75:381-389.
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