Lina Zhang, Shaolong Wan, Congcong Du, Qiang Wan, Hien Pham, Jiafei Zhao, Xingyu Ding, Diye Wei, Wei Zhao, Jiwei Li, Yanping Zheng, Hui Xie, Hua Zhang, Mingshu Chen, Kelvin H L Zhang, Shuai Wang, Jingdong Lin, Jianyu Huang, Sen Lin, Yong Wang, Abhaya K Datye, Ye Wang, Haifeng Xiong
Identification of active sites in catalytic materials is important and helps establish approaches to the precise design of catalysts for achieving high reactivity. Generally, active sites of conventional heterogeneous catalysts can be single atom, nanoparticle or a metal/oxide interface. Herein, we report that metal/oxide reverse interfaces can also be active sites which are created from the coordinated migration of metal and oxide atoms. As an example, a Pd1 /CeO2 single-atom catalyst prepared via atom trapping, which is otherwise inactive at 30 °C, is able to completely oxidize formaldehyde after steam treatment...
February 9, 2024: Nature Communications