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Excavated Cubic Platinum–Tin Alloy Nanocrystals Constructed from Ultrathin Nanosheets with Enhanced Electrocatalytic Activity
Author(s) -
Chen Qiaoli,
Yang Yanan,
Cao Zhenming,
Kuang Qin,
Du Guifen,
Jiang Yaqi,
Xie Zhaoxiong,
Zheng Lansun
Publication year - 2016
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201602592
Subject(s) - nanocrystal , materials science , polyvinylpyrrolidone , cubic crystal system , tin , platinum , alloy , nanotechnology , chemical engineering , metal , metallurgy , catalysis , chemistry , crystallography , polymer chemistry , biochemistry , engineering
Excavated polyhedral noble‐metal materials that were built by the orderly assembly of ultrathin nanosheets have both large surface areas and well‐defined facets, and therefore could be promising candidates for diverse important applications. In this work, excavated cubic Pt–Sn alloy nanocrystals (NCs) with {110} facets were constructed from twelve nanosheets by a simple co‐reduction method with the assistance of the surface regulator polyvinylpyrrolidone. The specific surface area of the excavated cubic Pt–Sn NCs is comparable to that of commercial Pt black despite their larger particle size. The excavated cubic Pt–Sn NCs exhibited superior electrocatalytic activity in terms of both the specific area current density and the mass current density towards methanol oxidation.