Encapsulation of Platinum by Titania under an Oxidative Atmosphere: Contrary to Classical Strong Metal-Support Interactions

doi:10.1021/acscatal.1c01347

IMR OpenIR

	Encapsulation of Platinum by Titania under an Oxidative Atmosphere: Contrary to Classical Strong Metal-Support Interactions
	Liu, Shaofeng 1,2,3; Qi, Haifeng 1,3; Zhou, Junhui 4; Xu, Wei 5; Niu, Yiming 6; Zhang, Bingsen 6; Zhao, Yang 1; Liu, Wei 1; Ao, Zhimin 4; Kuang, Zhichong 1,3; Li, Lin 1; Wang, Meng 7; Wang, Junhu 1,2
通讯作者	Zhang, Bingsen(bszhang@imr.ac.cn) ; Ao, Zhimin(zhimin.ao@gdut.edu.cn) ; Wang, Junhu(wangjh@dicp.ac.cn)
	2021-05-21
发表期刊	ACS CATALYSIS
ISSN	2155-5435
卷号	11 期号:10 页码:6081-6090
摘要	Classical strong metal-support interaction (SMSI) has attracted intensive attention in the heterogeneous catalysis field; however, its crystalline TiOx overlayer and reversible feature often curtail the effect of classical SMSI on enhancing the catalytic performance of supported metal catalysts in oxidation reactions, especially at elevated temperatures. Here, we report the evidence that Pt nanoparticles can be encapsulated by an amorphous and permeable TiOx cover layer in Pt/TiO2 catalysts under an oxidative atmosphere, where the keys are the utilization of melamine, followed by annealing in nitrogen flow and further calcination at 800 degrees C in air. More importantly, the formed overlayer is stabilized against re-oxidation at 400-600 degrees C in air, in sharp contrast to the retreat of the TiOx overlayer by subsequent oxidation treatment in classical SMSI. Such an extraordinary strategy is further demonstrated on titania-supported Pd and Rh nanoparticles, paving a promising way for designing supported platinum group metal-based catalysts with high activity and stability.
关键词	strong metal-support interaction (smsi) platinum group metals titania encapsulation oxidative atmosphere
资助者	National Natural Science Foundation of China ; International Partnership Program of Chinese Academy of Sciences ; State Key Laboratory of Catalysis in Dalian Institute of Chemical Physics
DOI	10.1021/acscatal.1c01347
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[21476232] ; National Natural Science Foundation of China[21777033] ; National Natural Science Foundation of China[21961142006] ; International Partnership Program of Chinese Academy of Sciences[121421KYSB20170020] ; State Key Laboratory of Catalysis in Dalian Institute of Chemical Physics[N-16-07]
WOS研究方向	Chemistry
WOS类目	Chemistry, Physical
WOS记录号	WOS:000656056200016
出版者	AMER CHEMICAL SOC
引用统计	被引频次：63[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/160359
专题	中国科学院金属研究所
通讯作者	Zhang, Bingsen; Ao, Zhimin; Wang, Junhu
作者单位	1.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China 2.Chinese Acad Sci, Mossbauer Effect Data Ctr, Dalian Inst Chem Phys, Dalian 116023, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.Guangdong Univ Technol, Sch Environm Sci & Engn, Guangzhou Key Lab Environm Catalysis & Pollut Con, Inst Environm Hlth & Pollut Control, Guangzhou 510080, Peoples R China 5.Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China 6.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China 7.Nagoya Univ, Dept Chem & Biotechnol, Sch Engn, Nagoya, Aichi 4648603, Japan
推荐引用方式 GB/T 7714	Liu, Shaofeng,Qi, Haifeng,Zhou, Junhui,et al. Encapsulation of Platinum by Titania under an Oxidative Atmosphere: Contrary to Classical Strong Metal-Support Interactions[J]. ACS CATALYSIS,2021,11(10):6081-6090.
APA	Liu, Shaofeng.,Qi, Haifeng.,Zhou, Junhui.,Xu, Wei.,Niu, Yiming.,...&Wang, Junhu.(2021).Encapsulation of Platinum by Titania under an Oxidative Atmosphere: Contrary to Classical Strong Metal-Support Interactions.ACS CATALYSIS,11(10),6081-6090.
MLA	Liu, Shaofeng,et al."Encapsulation of Platinum by Titania under an Oxidative Atmosphere: Contrary to Classical Strong Metal-Support Interactions".ACS CATALYSIS 11.10(2021):6081-6090.