TY - JOUR
T1 - Elemental segregation in multimetallic core-shell nanoplates
AU - Saleem, Faisal
AU - Zhang, Zhicheng
AU - Cui, Xiaoya
AU - Gong, Yue
AU - Chen, Bo
AU - Lai, Zhuangchai
AU - Yun, Qinbai
AU - Gu, Lin
AU - Zhang, Hua
N1 - Funding Information:
This work was supported by MOE under AcRF Tier 2 (MOE2015-T2-2-057; MOE2016-T2-2-103; MOE2017-T2-1-162) and AcRF Tier 1 (2016-T1-002-051; 2017-T1-001-150; 2017-T1-002-119), and NTU under Start-Up Grant (M4081296.070.500000) in Singapore. L. Gu acknowledges the Key Research Program of Frontier Sciences, CAS (No. QYZDB-SSW-JSC035) and National Natural Science Foundation of China (51672307, 51421002). Y.G. acknowledges the support of “Bo Xin Project” from Ministry of Human Resources and Social Security of the PRC. We acknowledge the Facility for Analysis, Characterization, Testing and Simulation, Nanyang Technological University, Singapore, for use of their electron microscopy (and/or X-ray) facilities. H.Z. thanks the support from ITC via Hong Kong Branch of National Precious Metals Material Engineering Research Center, and the Start-Up Grant from City University of Hong Kong. We also thank Prof. Jun Luo, Ms. Jing Liu, Mr. Tong Zhou and Mr. Kai Wang at the Center for Electron Microscopy in Tianjin University of Technology for supporting this project.
Publisher Copyright:
Copyright © 2019 American Chemical Society.
PY - 2019/9/18
Y1 - 2019/9/18
N2 - In this work, we report an element segregation phenomenon in two-dimensional (2D) core-shell nanoplates, subsequently resulting in the formation of yolk-cage nanostructures after selective electrochemical etching. By using PtCu nanoplates as templates, PtCu@Pd core-shell nanoplates are formed. Interestingly, during the growth of Ru on the PtCu@Pd core-shell nanoplates, due to the selective element diffusion, PtCuPd@PdCu@Ru nanoplates are obtained. After selectively etching of PdCu in PtCuPd@PdCu@Ru using electrochemical method, the PtCuPd@Ru yolk-cage nanostructures are obtained. As a proof-of-concept application, this unique nanostructure shows superior electrocatalytic activity and stability toward the methanol oxidation reaction as compared to the PtCu nanoplates and commercial Pt/C catalyst.
AB - In this work, we report an element segregation phenomenon in two-dimensional (2D) core-shell nanoplates, subsequently resulting in the formation of yolk-cage nanostructures after selective electrochemical etching. By using PtCu nanoplates as templates, PtCu@Pd core-shell nanoplates are formed. Interestingly, during the growth of Ru on the PtCu@Pd core-shell nanoplates, due to the selective element diffusion, PtCuPd@PdCu@Ru nanoplates are obtained. After selectively etching of PdCu in PtCuPd@PdCu@Ru using electrochemical method, the PtCuPd@Ru yolk-cage nanostructures are obtained. As a proof-of-concept application, this unique nanostructure shows superior electrocatalytic activity and stability toward the methanol oxidation reaction as compared to the PtCu nanoplates and commercial Pt/C catalyst.
UR - http://www.scopus.com/inward/record.url?scp=85072362820&partnerID=8YFLogxK
U2 - 10.1021/jacs.9b05197
DO - 10.1021/jacs.9b05197
M3 - Journal article
C2 - 31464430
AN - SCOPUS:85072362820
SN - 0002-7863
VL - 141
SP - 14496
EP - 14500
JO - Journal of the American Chemical Society
JF - Journal of the American Chemical Society
IS - 37
ER -