Electrostatic interaction based hollow Pt and Ru assemblies toward methanol oxidation

CORC > 过程工程研究所 > 中国科学院过程工程研究所 > 研究所（批量导入）

	Electrostatic interaction based hollow Pt and Ru assemblies toward methanol oxidation
	Ye, Feng 1; Yang, Jinhua 2; Hu, Weiwei 1; Liu, Hui 1; Liao, Shijun 3; Zeng, Jianhuang 3; Yang, Jun 1,2
刊名	RSC ADVANCES
	2012
卷号	2 期号:19 页码:7479-7486
关键词	hydrous ruthenium oxide fuel-cell oxygen reduction phase-transfer alloy nanoparticles au nanoparticles facile synthesis metal-ions ad-atoms platinum
ISSN号	2046-2069
其他题名	RSC Adv.
中文摘要	Mastery over the structure and/or composition of metal nanoparticles is an effective way to improve their catalytic activity on a mass basis. Herein, we report a facile solution route for the assembly of hollow Pt nanospheres (hPt) and ultrafine Ru nanoparticles based on electrostatic interactions. In this approach, negatively charged hollow Pt nanospheres with an average size of 12 nm and positively charged ultrafine Ru nanoparticles with an average size of 0.9 nm are first prepared, followed by the successful fabrication of hPt-Ru assemblies upon mixing the particles with opposite charges. The hPt-Ru assemblies at a Pt/Ru molar ratio of 2 : 1 exhibit superior catalytic activity toward methanol oxidation in direct methanol fuel cells for the presence of a mixed-phase containing Pt and an effective oxophilic metal, and a smaller dilution effect on the Pt surface induced by Ru in the assemblies. This study offers a vivid example to demonstrate the integration of a second oxophilic metal into the active Pt catalyst capable of enhancing its catalytic properties by means of a physical construction.
英文摘要	Mastery over the structure and/or composition of metal nanoparticles is an effective way to improve their catalytic activity on a mass basis. Herein, we report a facile solution route for the assembly of hollow Pt nanospheres (hPt) and ultrafine Ru nanoparticles based on electrostatic interactions. In this approach, negatively charged hollow Pt nanospheres with an average size of 12 nm and positively charged ultrafine Ru nanoparticles with an average size of 0.9 nm are first prepared, followed by the successful fabrication of hPt-Ru assemblies upon mixing the particles with opposite charges. The hPt-Ru assemblies at a Pt/Ru molar ratio of 2 : 1 exhibit superior catalytic activity toward methanol oxidation in direct methanol fuel cells for the presence of a mixed-phase containing Pt and an effective oxophilic metal, and a smaller dilution effect on the Pt surface induced by Ru in the assemblies. This study offers a vivid example to demonstrate the integration of a second oxophilic metal into the active Pt catalyst capable of enhancing its catalytic properties by means of a physical construction.
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Chemistry, Multidisciplinary
研究领域[WOS]	Chemistry
关键词[WOS]	HYDROUS RUTHENIUM OXIDE ; FUEL-CELL ; OXYGEN REDUCTION ; PHASE-TRANSFER ; ALLOY NANOPARTICLES ; AU NANOPARTICLES ; FACILE SYNTHESIS ; METAL-IONS ; AD-ATOMS ; PLATINUM
收录类别	SCI
原文出处	://WOS:000307185300022
语种	英语
WOS记录号	WOS:000307185300022
公开日期	2013-11-28
内容类型	期刊论文
版本	出版稿
源URL	[http://ir.ipe.ac.cn/handle/122111/6321]
专题	过程工程研究所_研究所（批量导入）
作者单位	1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China 2.The Nanos, Inst Bioengn & Nanotechnol, Singapore 138669, Singapore 3.S China Univ Technol, Sch Chem & Chem Engn, Guangdong Key Lab Fuel Cell Technol, Guangzhou 510641, Guangdong, Peoples R China
推荐引用方式 GB/T 7714	Ye, Feng,Yang, Jinhua,Hu, Weiwei,et al. Electrostatic interaction based hollow Pt and Ru assemblies toward methanol oxidation[J]. RSC ADVANCES,2012,2(19):7479-7486.
APA	Ye, Feng.,Yang, Jinhua.,Hu, Weiwei.,Liu, Hui.,Liao, Shijun.,...&Yang, Jun.(2012).Electrostatic interaction based hollow Pt and Ru assemblies toward methanol oxidation.RSC ADVANCES,2(19),7479-7486.
MLA	Ye, Feng,et al."Electrostatic interaction based hollow Pt and Ru assemblies toward methanol oxidation".RSC ADVANCES 2.19(2012):7479-7486.