Citation: Dongxue Zhou, Xiangdong Xue, Qingjie Luan, Liguo Zhang, Baozhen Li, Xing Wang, Wenjun Dong, Ge Wang, Changmin Hou. A unique Janus PdZn-Co catalyst for enhanced photocatalytic syngas production from CO₂ and H₂O[J]. Chinese Chemical Letters, ;2023, 34(7): 107798. doi: 10.1016/j.cclet.2022.107798 shu

A unique Janus PdZn-Co catalyst for enhanced photocatalytic syngas production from CO₂ and H₂O

Dongxue Zhou ^{a, b, 1} ,
Xiangdong Xue ^{a, 1} ,
Qingjie Luan ^{a, b} ,
Liguo Zhang ^{a, b} ,
Baozhen Li ^{a, b} ,
Xing Wang ^{a, b} ,
Wenjun Dong ^{a, b, *,} ,
Ge Wang ^{a, *,} ,
Changmin Hou ^c

a.
Beijing Advanced Innovation Center for Materials Genome Engineering, Beijing Key Laboratory of Function Materials for Molecule & Structure Construction, School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China
b.
Shunde Graduate School of University of Science and Technology Beijing, Foshan 528399, China
c.
State Key Laboratory of Inorganic Synthesis & Preparative Chemistry, College of Chemistry, Jilin University, Changchun 130012, China

wdong@ustb.edu.cn

gewang@ustb.edu.cn

Received Date: 9 August 2022
Accepted Date: 1 September 2022
Available Online: 9 September 2022

Figures(4)

The development of excellent catalyst to achieve photocatalytic syngas production from CO₂ and H₂O is a prospective and sustainable strategy to alleviate environment and energy crisis. In this study, a unique Janus PdZn-Co catalyst is prepared by annealed the Pd/IRMOF-3(Co, Zn) precursor. Due to the strong interaction, the electron transfers from PdZn terminal to Co terminal in the Janus structure. The electron-received Co terminal facilitates Co sites coordinate with the electrophilic C atom of CO₂ and the electron-donated PdZn center is easier to coordinate with nucleophilic O atoms of H₂O or CO bonds. The charge redistribution enhances the absorption of CO₂ and H₂O, which promotes H₂ evolution and CO production. In addition, the carbon shell effectively suppresses the metal core agglomeration and facilitates the electron transmission from photosensitizer to metallic active sites. Meanwhile, the ratio of CO/H₂ can be regulated (~3:1 to 2:1) by adjusting the proportion of Co and PdZn. The Janus structure and graphite carbon synergistically play a profound impact on improving the photocatalytic performance. The optimized PdZn-Co catalyst exhibits a superior photocatalytic CO production rate (20.03 µmol/h) and the H₂ generation rate (9.90 µmol/h) with a ratio of CO/H₂ = 2.02.
- PdZn@C catalyst,
- Janus structure,
- Charge redistribution,
- Absorption modulation,
- Photocatalyst
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沈阳化工大学材料科学与工程学院沈阳 110142

A unique Janus PdZn-Co catalyst for enhanced photocatalytic syngas production from CO2 and H2O

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通讯作者: 陈斌, bchen63@163.com

A unique Janus PdZn-Co catalyst for enhanced photocatalytic syngas production from CO₂ and H₂O