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Core@shell sub-ten-nanometer noble metal nanoparticles with a controllable thin Pt shell and their catalytic activity towards oxygen reduction
Alternative TitleCore@shell sub-ten-nanometer noble metal nanoparticles with a controllable thin Pt shell and their catalytic activity towards oxygen reduction
Deogratias Ntirikwendera1; Ji Muwei1; Zhang Yong1; Liu Jiajia1; Zhang Jiatao2; Zhu Hesun1
2015
Source PublicationNANO RESEARCH
ISSN1998-0124
Volume8Issue:1Pages:271-280
AbstractReducing Pt loading, while improving electrocatalytic activity and the stability of Pt-based nanostructured materials, is currently a key challenge in green energy technology. Herein, we report the controllable synthesis of tri-metallic (Au@Ag@Pt) and bimetallic (Ag@Pt) particles consisting of a controllable thin Pt shell, via interface-mediated galvanic displacement. Through oil-ethanol-H2O interface mediation, the controllable "out to in" displacement of Ag atoms to Pt enables the formation of a thin Pt shell on monodisperse sub-ten-nanometer Au@Ag and Ag nanocrystals. The synthesized nanoparticles with a thin Pt shell exhibited potential catalytic activity towards the oxygen reduction reaction (ORR) due to the high exposure of Pt atoms.
Other AbstractReducing Pt loading, while improving electrocatalytic activity and the stability of Pt-based nanostructured materials, is currently a key challenge in green energy technology. Herein, we report the controllable synthesis of tri-metallic (Au@Ag@Pt) and bimetallic (Ag@Pt) particles consisting of a controllable thin Pt shell, via interface-mediated galvanic displacement. Through oil-ethanol-H_2O interface mediation, the controllable “out to in” displacement of Ag atoms to Pt enables the formation of a thin Pt shell on monodisperse sub-ten-nanometer Au@Ag and Ag nanocrystals. The synthesized nanoparticles with a thin Pt shell exhibited potential catalytic activity towards the oxygen reduction reaction (ORR) due to the high exposure of Pt atoms.
KeywordGALVANIC REPLACEMENT ELECTROCATALYTIC ACTIVITY PLATINUM NANOPARTICLES SILVER NANOPARTICLES ALLOY NANOPARTICLES PT NANOPARTICLES FUEL-CELLS HOLLOW AG NANOSTRUCTURES core@shell metal nanocomposites Pt shell sub-ten-nanometer oxygen reduction
Indexed ByCSCD
Language英语
Funding Project[National Natural Science Foundation] ; [Research Fund for the Doctoral Program of Higher Education of China] ; [Beijing Excellent Talent Training Project] ; [Program for New Century Excellent Talents in University]
CSCD IDCSCD:5454007
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Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/153304
Collection中国科学院金属研究所
Affiliation1.中国科学院金属研究所
2.Beijing Institute Technol, Dept Mat Phys & Chem, Beijing 100081, Peoples R China
Recommended Citation
GB/T 7714
Deogratias Ntirikwendera,Ji Muwei,Zhang Yong,et al. Core@shell sub-ten-nanometer noble metal nanoparticles with a controllable thin Pt shell and their catalytic activity towards oxygen reduction[J]. NANO RESEARCH,2015,8(1):271-280.
APA Deogratias Ntirikwendera,Ji Muwei,Zhang Yong,Liu Jiajia,Zhang Jiatao,&Zhu Hesun.(2015).Core@shell sub-ten-nanometer noble metal nanoparticles with a controllable thin Pt shell and their catalytic activity towards oxygen reduction.NANO RESEARCH,8(1),271-280.
MLA Deogratias Ntirikwendera,et al."Core@shell sub-ten-nanometer noble metal nanoparticles with a controllable thin Pt shell and their catalytic activity towards oxygen reduction".NANO RESEARCH 8.1(2015):271-280.
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