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题名: Green synthesis of Pt-Au dendrimer-like nanoparticles supported on polydopamine-functionalized graphene and their high performance toward 4-nitrophenol reduction
其他题名: Green synthesis of Pt-Au dendrimer-like nanoparticles supported on polydopamine-functionalized graphene and their high performance toward 4- nitrophenol reduction
作者: Ye, WC; Yu, J; Zhou, YX; Gao, DQ(高大强); Wang, DA; Wang, CM(王春明); Xue, DS(薛德胜)
收录类别: SCIE ; EI
出版日期: 2016-02
刊名: APPLIED CATALYSIS B-ENVIRONMENTAL
卷号: 181, 页码:371-378
英文摘要: A facile, environmentally friendly route is demonstrated for the synthesis of Pt-Au dendrimer-like nanoparticles on the surface of polydopamine (PDA)-wrapped reduced graphene oxide (RGO), in which Pt-Au alloy nanoparticles are synthesized by the reduction of H2PtCl6 and HAuCI4 with ascorbic acid. The effects of support material and chemical composition on the catalytic activity for the reduction of 4-nitrophenol (4-NP) are investigated in detail. Pt nanoparticles supported on PDA/RGO (Pt-PDA/RGO) exhibit significantly higher catalytic activity as compared to those exhibited by Pt nanop articles deposited on pristine graphene sheets (Pt-RGO) and commercial Pt/C catalyst. Furthermore, the chemical composition seriously affects the catalytic ability of the catalysts. With Pt-to-Au molar ratios of 3/1 and 1/1, significantly enhanced catalytic activities are observed, outperforming the support decorated with each single constituent. The high activity of Pt-Au-PDA/RGO can be explained by electronic effect involving in two types of electron transfers: (1) from the PDA coating to both Au and Pt atoms; (2) from Au to Pt atoms. Moreover, the Pt3Au1-PDA/RGO composite keeps a stable conversion efficiency of around 100% over six successive reduction reaction cycles. Through an experimental device of "filtering and catalyzing," the Pt3Aul- PDA/RGO sample exhibits superior efficiency for the purification of water containing 4-NP. Within 8 s, the water becomes colorless. (C) 2015 Elsevier B.V. All rights reserved.
关键词: Reduced graphene oxide ; Polydopamine ; Pt-Au alloy ; Dendrimer-like ; 4-Nitrophenol reduction
作者部门: [Ye, Weichun ; Yu, Jing ; Zhou, Yaxin ; Wang, Chunming] Lanzhou Univ, State Key Lab Appl Organ Chem, Lanzhou 730000, Peoples R China ; [Ye, Weichun ; Yu, Jing ; Zhou, Yaxin ; Wang, Chunming] Lanzhou Univ, Dept Chem, Lanzhou 730000, Peoples R China ; [Ye, Weichun ; Gao, Daqiang ; Xue, Desheng] Lanzhou Univ, Key Lab Magnetism & Magnet Mat MOE, Lanzhou 730000, Peoples R China ; [Ye, Weichun ; Gao, Daqiang ; Xue, Desheng] Lanzhou Univ, Dept Phys, Lanzhou 730000, Peoples R China ; [Wang, Daoai] Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Solid Lubricat, Lanzhou 730000, Peoples R China
通讯作者: Ye, WC (reprint author), Lanzhou Univ, Key Lab Magnetism & Magnet Mat MOE, Lanzhou 730000, Peoples R China.
学科分类: Chemistry; Engineering
文章类型: Article
所属项目编号: Fundamental Research Fund for the Central Universities [lzujbky-2014-69] ; Post-Doctoral Science Foundation of China [2013M542393]
所属项目名称: 中国博士后科学基金 ; 中央高校基本科研业务费专项资金
项目资助者: CPSF ; LZU
语种: 英语
DOI: 10.1016/j.apcatb.2015.08.013
ISSN号: 0926-3373
WOS记录号: WOS:000364256000034
EI记录号: 20153401206170
IR记录号: WOS:000364256000034
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内容类型: 期刊论文
URI标识: http://ir.lzu.edu.cn/handle/262010/180321
Appears in Collections:化学化工学院_期刊论文

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Recommended Citation:
Ye, WC,Yu, J,Zhou, YX,et al. Green synthesis of Pt-Au dendrimer-like nanoparticles supported on polydopamine-functionalized graphene and their high performance toward 4-nitrophenol reduction[J]. APPLIED CATALYSIS B-ENVIRONMENTAL,2016,181:371-378.
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