催化作用
面(心理学)
材料科学
纳米晶
氧化物
纳米结构
选择性
纳米技术
金属
纳米颗粒
过渡金属
化学工程
化学
冶金
心理学
工程类
五大性格特征
社会心理学
生物化学
人格
作者
Muhan Cao,Zeyuan Tang,Qipeng Liu,Yong Xu,Min Chen,Haiping Lin,Youyong Li,Elad Gross,Qiao Zhang
出处
期刊:Nano Letters
[American Chemical Society]
日期:2016-07-27
卷期号:16 (8): 5298-5302
被引量:70
标识
DOI:10.1021/acs.nanolett.6b02662
摘要
The demand for catalyst with higher activity and higher selectivity is still a central issue in current material science community. On the basis of first-principles calculations, we demonstrate that the catalytic performance of the Pd–TiO2 hybrid nanostructures can be selectively promoted or depressed by choosing the suitable shaped Pd and TiO2 nanocrystals. To be more specific, the catalytic activities of Pd nanoparticles enclosed by (100) or (111) facets can be promoted more significantly when dosed on the TiO2(001) than on TiO2(101) under irradiation. Such theoretical prediction has then been further verified by the experimental observations in which the Pd(100)–TiO2(001) composites exhibit the highest catalytic performance toward the activation of oxygen among all the other shaped hybrid nanostructures. As a result, the selection of facets of support materials can provide an extra tuning parameter to control the catalytic activities of metal nanoparticles. This research opened up a new direction for designing and preparing catalysts with enhanced catalytic performance.
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