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题名: Carboxyl-assisted synthesis of Co nanorods with high energy facet on graphene oxide sheets for efficient photocatalytic hydrogen evolution
作者: Tian, B; Zhen, WL; Gao, HB; Zhang, XQ; Li, Z; Lu, GX
收录类别: SCIE
出版日期: 2017-04
刊名: APPLIED CATALYSIS B-ENVIRONMENTAL
卷号: 203, 页码:789-797
出版者: ELSEVIER
出版地: AMSTERDAM
英文摘要: In this paper, Co nanorods with extremely high length to diameter and preferred exposed (101) facet were synthesized by carboxyl-assisted over graphite oxide surface. DFT calculation results indicated that (101) facet Co nanorods exhibited higher surface energy of (101) facets (2.61 J/m(2)) than that of (100) planes nanorods (2.46 J/m(2)). Such Co nanorods showed very low over-potential for proton reduction, about 0.20 V onset overpotential and 400 and 510 mV at current densities of 2 and 5 mA/cm(2), and worked as high active co-catalyst for photocatalytic hydrogen evolution. Co (101) nanorods loaded catalyst generated 891.3 mu mol H-2 in 2 h, while Co nanoparticles only gave 451.6 jimol of hydrogen during same time. The apparent quantum efficiency (AQE) of Co nanorods catalyst achieved 17.4% at 520 nm. This work opened a news strategy for design of with rodlike structure cocatalyst with preferred exposed high surface energy facet for photocatalytic hydrogen evolution reaction though the carboxylation of GO. (C) 2016 Elsevier B.V. All rights reserved.
关键词: Co nanorods ; Carboxyl-assisted ; High surface energy ; Low over-potential ; Hydrogen evolution
作者部门: [Tian, Bin ; Zhen, Wenlong ; Zhang, Xuqiang ; Li, Zhen ; Lu, Gongxuan] Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Oxo Synth & Select Oxidat, Lanzhou 730000, Peoples R China ; [Tian, Bin ; Li, Zhen] Univ Chinese Acad Sci, Beijing 100049, Peoples R China ; [Gao, Haibo] Lanzhou Univ, Coll Chem & Chem Engn, State Key Lab Appl Organ Chem, Lanzhou, Peoples R China
通讯作者: Lu, GX (reprint author), Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Oxo Synth & Select Oxidat, Lanzhou 730000, Peoples R China.
学科分类: Chemistry; Engineering
文章类型: Article
所属项目编号: National Natural Science Foundation of China [21433007, 21673262] ; 973 Program of Department of Sciences and Technology China [2013CB632404]
所属项目名称: 国家自然科学基金项目 ; 国家重点基础研究发展计划以及国家重大科学研究计划(973计划)
项目资助者: NSFC ; MOST
语种: 英语
DOI: 10.1016/j.apcatb.2016.10.070
ISSN号: 0926-3373
WOS记录号: WOS:000390965000078
IR记录号: WOS:000390965000078
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内容类型: 期刊论文
URI标识: http://ir.lzu.edu.cn/handle/262010/188859
Appears in Collections:化学化工学院_期刊论文

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Recommended Citation:
Tian, B,Zhen, WL,Gao, HB,et al. Carboxyl-assisted synthesis of Co nanorods with high energy facet on graphene oxide sheets for efficient photocatalytic hydrogen evolution[J]. APPLIED CATALYSIS B-ENVIRONMENTAL,2017,203:789-797.
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