Stable Pt Single Atoms and Nanoclusters on Ultrathin CuO Film and Their Performances in CO Oxidation
Stable Pt Single Atoms and Nanoclusters on Ultrathin CuO Film and Their Performances in CO Oxidation
复制标题
超薄 CuO 薄膜上稳定的 Pt 单原子和纳米团簇及其 CO 氧化性能
DOI:
10.1021/acs.jpcc.5b11362
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发表时间:
2016-01
影响因子:
3.7
通讯作者:
Kai Wu
中科院分区:
文献类型:
--
作者:
Wei Chen;Guoqin Xu;Xueming Yang;Kai Wu
A series of model catalysts consisting of Pt single atoms and nanoclusters supported by monolayered CuO film grown at Cu(110) were successfully prepared, which could be stabilized well above room temperature and which exhibited a high performance in CO oxidation at temperatures as low as ∼360 K. Combined scanning tunneling microscopy and temperature-programmed desorption measurements directly evidenced that at the initial CO oxidation stage, oxygen vacancy in the CuO lattice was generated at the nearest neighbor of the Pt nanoclusters. The experimental measurements showed that the oxidation activity was inversely proportional to the Pt nanocluster size. In contrast, the Pt single atoms possessed no surface reactivity for the CO oxidation because of the early and complete desorption of CO before its oxidation on the model catalysts commenced.
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DOI:
10.1002/cphc.201300217
发表时间:
2013-06
期刊:
Chemphyschem : a European journal of chemical physics and physical chemistry
影响因子:
--
作者:
Soeren Porsgaard;L. Ono;Helene Zeuthen;J. Knudsen;J. Schnadt;L. Merte;J. Chevallier;S. Helveg;M. Salmeron;S. Wendt;F. Besenbacher
通讯作者:
Soeren Porsgaard;L. Ono;Helene Zeuthen;J. Knudsen;J. Schnadt;L. Merte;J. Chevallier;S. Helveg;M. Salmeron;S. Wendt;F. Besenbacher
影响因子:
3.3
作者:
Bera, P;Gayen, A;Arena, F
通讯作者:
Arena, F
影响因子:
7.3
作者:
M. Kotobuki;A. Watanabe;H. Uchida;H. Yamashita;Masahiro Watanabe
通讯作者:
M. Kotobuki;A. Watanabe;H. Uchida;H. Yamashita;Masahiro Watanabe
影响因子:
56.9
作者:
Over, H;Kim, YD;Ertl, G
通讯作者:
Ertl, G
影响因子:
17.1
作者:
Addou, Rafik;Senftle, Thomas P.;Batzill, Matthias
通讯作者:
Batzill, Matthias