Monolithic NF@ZnO/Au@ZIF-8 photocatalyst with strong photo-thermal-magnetic coupling and selective-breathing effects for boosted conversion of CO2 to CH4

Tang, Zhu ¹Zhu, Fengfan ¹Zhou, Jiancheng ¹Chen, Wenshuai ²Wang, Ke ¹Liu, Maochang ³Wang, Nan ¹Li, Naixu¹

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作者信息

1. Southeast Univ
2. Northeast Forestry Univ
3. Xi An Jiao Tong Univ
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Abstract

Gas adsorption/desorption process and conversion efficiency of solar energy are crucial to photocatalytic CO2 conversion. Here, we report the synthesis of a metal-organic-framework based monolithic NF@ZnO/Au@ZIF-8 photocatalyst that can simulate the respiratory process to accelerate adsorption of CO2 and desorption of CH4 during the photocatalytic reaction. Particularly, this selective-breathing monolithic photocatalyst could coupling external magnetic field into the photocatalytic process, achieving photo-thermal-magnetic field synergy in the reaction system. Upon this photo-thermal-magnetic coupling, the temperature of surface reaction could be elevated to about 180 degrees C, leading to a drastically improved charge transfer behavior and the significantly increased breathing efficiency. The yield of CH4 over the selective-breathing monolithic NF@ZnO/Au@ZIF-8 photocatalyst reaches 270.02 mu mol/g with a high stability and a high selectivity up to 89.72%. This study provides an ideal approach for the design of monolithic catalysts not only with balanced gas adsorption desorption property, but also endowed with multi-field coupling ability.

Key words

Photocatalysis/External fields/Monolithic catalysts/ZnO/CO2 reduction/NICKEL FOAM/GAS-PHASE/NI FOAM/REDUCTION/NANOCOMPOSITES/SEPARATION/CATALYST/NANORODS/ZNO/ENHANCEMENT

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出版年

2022

Applied Catalysis

ISSN：0926-3373

被引量37

参考文献量51

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