A Selective Blocking Method To Control the Overgrowth of Pt on Au Nanorods
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- 作者：John Fennell ; Dongsheng He ; Anicetus Muche Tanyi ; Andrew J. Logsdail ; Roy L. Johnston ; Z. Y. Li ; Sarah L. Horswell
- 刊名：The Journal of the American Chemical Society
- 出版年：2013
- 出版时间：May 1, 2013
- 年：2013
- 卷：135
- 期：17
- 页码：6554-6561
- 全文大小：428K
- 年卷期：v.135,no.17(May 1, 2013)
- ISSN：1520-5126
文摘
A method for the preparation of smooth deposits of Pt on Au nanorods is described, involving sequential deposition steps with selective blocking of surface sites that reduces Pt-on-Pt deposition. The Au鈥揚t nanorods prepared by this method have higher long-term stability than those prepared by standard Pt deposition. Electrochemical data show that the resulting structure has more extended regions of Pt surface and enhanced activity toward the carbon monoxide oxidation and oxygen reduction reactions.