催化作用
面(心理学)
沉积(地质)
材料科学
氧化还原
选择性
金属
协调数
纳米技术
纳米-
化学工程
化学
冶金
地质学
复合材料
心理学
社会心理学
古生物学
人格
沉积物
五大性格特征
离子
有机化学
工程类
作者
Han Yan,Hao Lei,Xuetao Qin,Jincheng Liu,Li‐Hua Cai,Sunpei Hu,Zizhen Xiao,Fei Peng,Wei-Wei Wang,Zhao Jin,Xianfeng Yi,Anmin Zheng,Chao Ma,Chun‐Jiang Jia,Jie Zeng
标识
DOI:10.1002/anie.202411264
摘要
The surface chemistry of CeO2 is dictated by the well-defined facets, which exert great influence on the supported metal species and the catalytic performance. Here we report Pt1/CeO2 catalysts exhibiting specific structures of Pt-O coordination on different facets by using adequate preparation methods. The simple impregnation method results in Pt-O3 coordination on the predominantly exposed {111} facets, while the photo-deposition method achieves oriented atomic deposition for Pt-O4 coordination into the "nano-pocket" structure of {100} facets at the top. Compared to the impregnated Pt1/CeO2 catalyst showing normal redox properties and low-temperature activity for CO oxidation, the photo-deposited Pt1/CeO2 exhibits uncustomary strong metal-support interaction and extraordinary high-temperature stability. The preparation methods dictate the facet-dependent diversity of Pt-O coordination, resulting in the further activity-selectivity trade-off. By applying specific preparation routes, our work provides an example of disentangling the effects of support facets and coordination environments for nano-catalysts.
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