题目： |
Tuning Adsorbate-Mediated Strong Metal-Support Interaction byOxygen Vacancy: A Case Study in Ru/TiO2 |
作者： |
Juan Li1, Lin Zhang1, Xingda An1,2, Kai Feng1,2, Xuchun Wang5, Jiari He1, Yang Huang6, Jingjing Liu7, Liang Zhang1,2, Binhang Yan4, Chaoran Li1,3*, and Le He1,2* |
单位： |
1Institute of Functional Nano & Soft Materials (FUNSOM), Soochow University, Suzhou, 215123, Jiangsu, PR China 2Jiangsu Key Laboratory of Advanced Negative Carbon Technologies, Soochow University, Suzhou, 215123, Jiangsu, PR China 3Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, Suzhou, 215123, Jiangsu, PR China 4Department of Chemical Engineering, Tsinghua University, Beijing 100084, P. R. China 5Department of Chemistry, Soochow University-Western University Centre for Synchrotron Radiation Research, University of Western Ontario, London, N6A 5B7, Ontario, Canada 6State Key Laboratory for Oxo Synthesis and Selective Oxidation, Lanzhou Institute of Chemical Physics (LICP), Chinese Academy of Sciences, Lanzhou 730000, China. 7Institute of Information Technology, Suzhou Institute of Trade and Commerce, Suzhou, 215009, Jiangsu, PR China |
摘要： |
The adsorbate-mediated strong metal-support interaction (A-SMSI) offers a reversible means of altering the selectivity of supported metal catalysts, thereby providing a powerful tool for facile modulation of catalytic performance. However, the fundamental understanding of A-SMSI remains inadequate and methods for tuning A-SMSI are still in their nascent stages, impeding its stabilization under reaction conditions. Here, we report that the initial concentration of oxygen vacancy in oxide supports plays a key role in tuning the A-SMSI between Ru nanoparticles and defected titania (TiO2-x). Based on this new understanding, we demonstrate the in situ formation of A-SMSI under reaction conditions, obviating the typically required CO2-rich pretreatment. The as-formed A-SMSI layer exhibits remarkable stability at various temperatures, enabling excellent activity, selectivity and long-term stability in catalyzing the reverse water gas-shift reaction. This study deepens the understanding of the A-SMSI and the ability to stabilize A-SMSI under reaction conditions represents a key step for practical catalytic applications. |
影响因子： |
16.1 |
分区情况： |
一区 |
链接： |
责任编辑：郭佳