Size-Dependent Pt-TiO2 Strong Metal–Support Interaction

2020 ◽  
Vol 11 (12) ◽  
pp. 4603-4607
Author(s):  
Zongfang Wu ◽  
Yangyang Li ◽  
Weixin Huang
Author(s):  
Liangcai Zhang ◽  
Xinyu Liu ◽  
Hengwei Wang ◽  
Lina Cao ◽  
Chenxi Huang ◽  
...  

Strong metal-support interaction (SMSI) has long been studied in catalytic reactions. Proper utilization of the SMSI effect might not only improve the stability of the catalysts, but also the activity...


2020 ◽  
Vol 11 (1) ◽  
Author(s):  
Xiaorui Du ◽  
Yike Huang ◽  
Xiaoli Pan ◽  
Bing Han ◽  
Yang Su ◽  
...  

AbstractThe strong metal-support interaction (SMSI) has long been studied in heterogonous catalysis on account of its importance in stabilizing active metals and tuning catalytic performance. As a dynamic process taking place at the metal-support interface, the SMSI is closely related to the metal surface properties which are usually affected by the size of metal nanoparticles (NPs). In this work we report the discovery of a size effect on classical SMSI in Au/TiO2 catalyst where larger Au particles are more prone to be encapsulated than smaller ones. A thermodynamic equilibrium model was established to describe this phenomenon. According to this finding, the catalytic performance of Au/TiO2 catalyst with uneven size distribution can be improved by selectively encapsulating the large Au NPs in a hydrogenation reaction. This work not only brings in-depth understanding of the SMSI phenomenon and its formation mechanism, but also provides an alternative approach to refine catalyst performance.


Nano Letters ◽  
2016 ◽  
Vol 16 (7) ◽  
pp. 4528-4534 ◽  
Author(s):  
Shuyi Zhang ◽  
Philipp N. Plessow ◽  
Joshua J. Willis ◽  
Sheng Dai ◽  
Mingjie Xu ◽  
...  

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