Ultra-Small Platinum Nanoparticles Encapsulated in Sub-50 nm Hollow Titania Nanospheres for Low-Temperature Water-Gas Shift Reaction

doi:10.1021/acsami.8b12192

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	Ultra-Small Platinum Nanoparticles Encapsulated in Sub-50 nm Hollow Titania Nanospheres for Low-Temperature Water-Gas Shift Reaction
	Zhao, Hongyu 1,2; Yao, Siyu 4; Zhang, Mengtao 4; Huang, Fei 3; Fan, Qikui 1,2; Zhang, Shumeng 1,2; Liu, Hongyang 3; Ma, Ding 4; Gao, Chuanbo 1,2
刊名	ACS APPLIED MATERIALS & INTERFACES
	2018-10-31
卷号	10 期号:43 页码:36954-36960
关键词	ultra-small platinum nanoparticles hollow titania nanospheres encapsulation water-gas shift size-dependent catalysis
ISSN号	1944-8244
DOI	10.1021/acsami.8b12192
通讯作者	Liu, Hongyang(liuhy@imr.ac.cn) ; Ma, Ding(dma@pku.edu.cn) ; Gao, Chuanbo(gaochuanbo@mail.xjtu.edu.cn)
英文摘要	Ultra-small platinum nanoparticles loaded over titania is a promising catalyst for the low-temperature water gas shift (WGS) reaction and shows the potential to work in a mobile hydrogen fuel cell system. Their precise size engineering (<3 nm) and reliable stabilization remain challenging. To address these issues, we report a reverse-micelle synthesis approach, which affords uniform ultra-small platinum nano particles (tunable in similar to 1.0-2.6 nm) encapsulated in hollow titania nanospheres with a shell thickness of only similar to 3-5 nm and an overall diameter of only similar to 32 nm. The Pt@TiO2 yolk/shell nanostructured catalysts display extraordinary stability and monotonically increasing activity with the decreasing size of the Pt nanoparticles in the WGS. The size-dependent variation in the electronic property of the Pt nanoparticles and the reducible oxide encapsulation that prevents the Pt nanoparticles from sintering are ascribed as the main reasons for the excellent catalytic performance.
资助项目	National Natural Science Foundation of China[21671156] ; National Natural Science Foundation of China[21301138] ; National Natural Science Foundation of China[91545110] ; National Natural Science Foundation of China[21573254] ; Cyrus Tang Foundation ; Ministry of Science and Technology (MOST)[2016YFA0204100] ; Youth Innovation Promotion Association Chinese Academy of Sciences
WOS研究方向	Science & Technology - Other Topics ; Materials Science
语种	英语
出版者	AMER CHEMICAL SOC
WOS记录号	WOS:000449239600040
资助机构	National Natural Science Foundation of China ; Cyrus Tang Foundation ; Ministry of Science and Technology (MOST) ; Youth Innovation Promotion Association Chinese Academy of Sciences
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/130232]
专题	金属研究所_中国科学院金属研究所
通讯作者	Liu, Hongyang; Ma, Ding; Gao, Chuanbo
作者单位	1.Xi An Jiao Tong Univ, Frontier Inst Sci & Technol, Xian 710054, Shaanxi, Peoples R China 2.Xi An Jiao Tong Univ, State Key Lab Multiphase Flow Power Engn, Xian 710054, Shaanxi, Peoples R China 3.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Liaoning, Peoples R China 4.Peking Univ, Coll Chem & Mol Engn, Beijing 100871, Peoples R China
推荐引用方式 GB/T 7714	Zhao, Hongyu,Yao, Siyu,Zhang, Mengtao,et al. Ultra-Small Platinum Nanoparticles Encapsulated in Sub-50 nm Hollow Titania Nanospheres for Low-Temperature Water-Gas Shift Reaction[J]. ACS APPLIED MATERIALS & INTERFACES,2018,10(43):36954-36960.
APA	Zhao, Hongyu.,Yao, Siyu.,Zhang, Mengtao.,Huang, Fei.,Fan, Qikui.,...&Gao, Chuanbo.(2018).Ultra-Small Platinum Nanoparticles Encapsulated in Sub-50 nm Hollow Titania Nanospheres for Low-Temperature Water-Gas Shift Reaction.ACS APPLIED MATERIALS & INTERFACES,10(43),36954-36960.
MLA	Zhao, Hongyu,et al."Ultra-Small Platinum Nanoparticles Encapsulated in Sub-50 nm Hollow Titania Nanospheres for Low-Temperature Water-Gas Shift Reaction".ACS APPLIED MATERIALS & INTERFACES 10.43(2018):36954-36960.