Authors
Jie He, Xuandong Wang, Shenyu Lan, Hengcong Tao, Xinzhi Luo, Yingtang Zhou, Mingshan Zhu
Publication date
2022/11/15
Journal
Applied Catalysis B: Environmental
Volume
317
Pages
121747
Publisher
Elsevier
Description
Breaking the limitations of the intrinsic redox potential of perovskite oxides photocatalysts for catalytic CO2 reduction remains a big challenge. Here we report a new process to achieve the durability yet efficient CO2 reduction activity of various perovskite oxides (BiFeO3, LaFeO3 and LaNiO3) with an inactive CO2 photo-reduction ability via piezoelectrically polarization. Taking BiFeO3 (BFO) as a representative sample, the band tilting and structure compression of BFO reach the redox potential of CO2 reduction and build a piezoelectric field for CO2 adsorption and activation by introducing vibration energy, inducing a piezoelectric catalytic CO2 reduction process. Continued ultrasonic vibration with BFO achieves durability CO2 reduction to high production rates of CH4 (17.9 µmol g−1 h−1) and CO (28.7 µmol g−1 h−1), respectively. This crucial feature highlights the feasibility of piezoelectric catalysis for CO2 …
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