Peroxidase-Mimicking Nanozyme with Enhanced Activity and High Stability Based on Metal-Support Interactions

2017 ◽  
Vol 24 (2) ◽  
pp. 409-415 ◽  
Author(s):  
Zhihao Li ◽  
Xiangdong Yang ◽  
Yanbing Yang ◽  
Yaning Tan ◽  
Yue He ◽  
...  
Keyword(s):  
High Stability ◽  
Enhanced Activity ◽  
Metal Support ◽  
Metal Support Interactions

scholarly journals Synergizing strong metal-support interactions and spatial confinement boosts dynamics of atomic nickel for hydrogenations

2020 ◽  
Author(s):  
Jian Gu ◽  
Minzhen Jian ◽  
Li Huang ◽  
Zhihu Sun ◽  
Yang Pan ◽  
...  
Keyword(s):  
Rational Design ◽  
High Stability ◽  
Theoretical Calculations ◽  
Coke Formation ◽  
Dynamic Effect ◽  
Grand Challenge ◽  
Spatial Confinement ◽  
Metal Support ◽  
Metal Support Interactions ◽  
Highly Loaded

Abstract Atomically dispersed metal catalysts maximize atom efficiency and display unique catalytic properties compared to regular metal nanoparticles. However, achieving high reactivity while still preserving high stability at high loadings remains as a grand challenge. Here we solve the challenge by synergizing strong metal-support interactions and spatial confinement, which enable to fabricate highly loaded (3.1 wt%), active and stable atomic Ni and dense atomic Cu grippers (8.1 wt%) on a graphitic C3N4 support. For semi-hydrogenation of acetylene in excess of ethylene, the fabricated catalyst shows 11 times higher activity than the atomic Ni alone, high ethylene selectivity (90%), and high stability against both sintering and coke formation for 350 h. Comprehensive microscopic and spectroscopic characterization and theoretical calculations reveal the active site of the bridging Ni confined in two hydroxylated Cu grippers, whose structure changes dynamically by breaking interfacial Ni-support bonds upon reactant adsorption and making these bonds upon product desorption. Such a dynamic effect confers high activity/selectivity and high stability, providing an avenue to rational design of efficient, stable, highly loaded, yet atomically dispersed catalysts.

Growth kinetic control over MgFe2O4 to tune Fe occupancy and metal–support interactions for optimum catalytic performance

CrystEngComm ◽  
2021 ◽  
Vol 23 (13) ◽  
pp. 2538-2546
Author(s):  
Min Yang ◽  
Guangshe Li ◽  
Huixia Li ◽  
Junfang Ding ◽  
Yan Wang ◽  
...  
Keyword(s):  
Co Oxidation ◽  
Growth Kinetic ◽  
Catalytic Performance ◽  
Growth Behavior ◽  
Kinetic Control ◽  
Size Dependent ◽  
Metal Support ◽  
Support Size ◽  
Metal Support Interactions ◽  
First Time

For the first time, the growth behavior with size-dependent Fe occupancies at different sites of MgFe2O4 was examined. Hybrid catalysts of Pt/MgFe2O4 with a support size of 20.6 nm exhibited an optimal performance of CO oxidation.

Metal–Support Interactions in Fe/ZrO2Catalysts for Hydrogenation of CO

1997 ◽  
Vol 167 (2) ◽  
pp. 573-575 ◽  
Author(s):  
Kaidong Chen ◽  
Yining Fan ◽  
Qijie Yan
Keyword(s):  
Metal Support ◽  
Metal Support Interactions ◽  
Hydrogenation Of Co
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