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Cage-bell Pt-Pd nanostructures with enhanced catalytic properties and superior methanol tolerance for oxygen reduction reaction
Chen, Dong1,2; Ye, Feng1; Liu, Hui1,3; Yang, Jun1,3
2016-04-15
发表期刊SCIENTIFIC REPORTS
ISSN2045-2322
卷号6期号:APR页码:24600
摘要Precisely tailoring the structure and fully making use of the components of nanoparticles are effective to enhance their catalytic performance for a given reaction. We herein demonstrate the design of cage-bell structured Pt-Pd nanoparticles, where a Pd shell is deliberately selected to enhance the catalytic property and methanol tolerance of Pt for oxygen reduction reaction. This strategy starts with the synthesis of core-shell Pt@Ag nanoparticles, followed by galvanic replacement reaction between the Ag shell and Pd2+ ions to form core-shell-shell Pt@Ag@Ag-Pd nanoparticles with a Pt core and double shells composed of Ag at inner and alloy Ag-Pd at outer, respectively. Then, the core-shell-shell templates are agitated with saturated NaCl solution to eliminate the Ag component from the double shells, leading to the formation of bimetallic Pt-Pd nanoparticles with a cage-bell structure, defined as a movable Pt core enclosed by a porous Pd shell, which show enhanced catalytic activity for oxygen reduction compared with that of the Pt seeds due to the additional catalysis from Pd shell. In addition, owing to the different diffusion behavior of methanol and oxygen molecules in the porous Pd shell, the Pt-Pd cage-bell nanostructures also exhibit superior methanol tolerant property in catalyzing the oxygen reduction.
文章类型Article
WOS标题词Science & Technology
DOI10.1038/srep24600
收录类别SCI
语种英语
关键词[WOS]HOLLOW PALLADIUM NANOPARTICLES ; CORE-SHELL NANOPARTICLES ; FUEL-CELLS ; ELECTROCATALYTIC PERFORMANCE ; NOBLE-METALS ; FORMIC-ACID ; SILVER ; OXIDATION ; CROSSOVER ; DESIGN
WOS研究方向Science & Technology - Other Topics
WOS类目Multidisciplinary Sciences
项目资助者National Natural Science Foundation of China(21173226 ; Center for Mesoscience, Institute of Process Engineering, Chinese Academy of Sciences(COM2015A001) ; 21376247 ; 21476246 ; 21506225 ; 21573240)
WOS记录号WOS:000374222100001
引用统计
文献类型期刊论文
条目标识符http://ir.ipe.ac.cn/handle/122111/21006
专题多相复杂系统国家重点实验室
作者单位1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, 19A Yuquan Rd, Beijing 100049, Peoples R China
3.Chinese Acad Sci, Inst Proc Engn, Ctr Mesosci, Beijing 100190, Peoples R China
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Chen, Dong,Ye, Feng,Liu, Hui,et al. Cage-bell Pt-Pd nanostructures with enhanced catalytic properties and superior methanol tolerance for oxygen reduction reaction[J]. SCIENTIFIC REPORTS,2016,6(APR):24600.
APA Chen, Dong,Ye, Feng,Liu, Hui,&Yang, Jun.(2016).Cage-bell Pt-Pd nanostructures with enhanced catalytic properties and superior methanol tolerance for oxygen reduction reaction.SCIENTIFIC REPORTS,6(APR),24600.
MLA Chen, Dong,et al."Cage-bell Pt-Pd nanostructures with enhanced catalytic properties and superior methanol tolerance for oxygen reduction reaction".SCIENTIFIC REPORTS 6.APR(2016):24600.
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