Journal
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
Volume 134, Issue 28, Pages 11326-11329Publisher
AMER CHEMICAL SOC
DOI: 10.1021/ja302959e
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Funding
- National Natural Science Foundation of China [21071122, 21101134]
- Research Fund for the Doctoral Program of Higher Education of China [20091333110009]
- Natural Science Foundation of Hebei [E2010001169]
- Science Foundation of Yanshan University for the Excellent Ph.D. Students
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Highly uniform single-crystal ultrathin Pt nanowires (UTPtNWs) with a diameter of similar to 1.8 nm and a superhigh aspect ratio of > 10(4) were fabricated using insulin amyloid fibrils (INSAFs) as sacrificial templates. The use of INSAFs to build the UTPtNWs allowed for the preferential exposure of low-energy crystal facets that would be highly advantageous for the methanol oxidation reaction. The UTPtNWs displayed a large electrochemical active surface area of 71.34 m(2)/g, which is much higher than that of a commercial Pt/C catalyst. The UTPtNWs also maintained excellent electrochemical durability under repeated cyclic voltammetry scans. Because of its exciting high electrochemical activity, UTPtNWs is a promising material for the design of next-generation electrocatalysts and would also be useful in sensing, biomedical, and other electrochemical applications.
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