@article{Zhang2023, 
author = {Sai Zhang and Zhaoming Xia and Wenbin Li and You Wang and Yong Zou and Mingkai Zhang and Zhongmiao Gong and Yi Cui and Yongquan Qu},
title = {In-situ reconstruction of single-atom Pt on Co3O4 for hydrogenation},
year = {2023},
journal = {Nano Research},
volume = {16},
number = {5},
pages = {6507-6511},
keywords = {single-atom catalysis (SACs), coordination environment, Pt-Co bimetallic sites, hydrogenation},
url = {https://www.sciopen.com/article/10.1007/s12274-022-5279-1},
doi = {10.1007/s12274-022-5279-1},
abstract = {Actual chemical states of single-atom metal on reducible supports remain a fiercely debated topic under reactive environments. Herein, we demonstrate that the single-atom Pt on Co3O4 surface undergoes an in-situ reconstruction to form isolated Pt-Co bimetallic sites via reducing coordination number of Pt–O in the presence of hydrogen from both simulations and in-situ X-ray photoelectron spectroscopy. The modified chemical states of Pt greatly promoted H2 activation, thus delivering a significantly high turnover frequency of 7,448 h−1 (19.5 times over Pt nanoparticles on Co3O4) for hydrogenation of cinnamaldehyde. The satisfactory selectivity of 95.2% towards cinnamyl alcohol was ascribed to a tilted adsorption configuration of reactant on the catalyst surface via aldehyde group. We anticipate that the recognitions on in-situ reconstruction of single-atom catalysts (SACs) under the reducing conditions benefit the design of highly-performed hydrogenation catalysts.}
}