Facile Preparation of Hydrogen-Bonded Organic Framework/Cu2O Heterostructure Films via Electrophoretic Deposition for Efficient CO2 Photoreduction

An-An Zhang; Yu-Lin Li; Zhi-Bin Fang; Lei Xie; Rong Cao; Yangyang Liu; Tian-Fu Liu

doi:10.1021/acsami.2c02917

Facile Preparation of Hydrogen-Bonded Organic Framework/Cu₂O Heterostructure Films via Electrophoretic Deposition for Efficient CO₂ Photoreduction

ACS Appl Mater Interfaces. 2022 May 11;14(18):21050-21058. doi: 10.1021/acsami.2c02917. Epub 2022 Apr 27.

Authors

An-An Zhang^{1

2}, Yu-Lin Li^{1

3}, Zhi-Bin Fang^{1

3}, Lei Xie^{1

3}, Rong Cao^{1

2

3}, Yangyang Liu⁴, Tian-Fu Liu^{1

3}

Affiliations

¹ State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, P. R. China.
² Department of Chemistry, School of Chemistry and Materials Science, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China.
³ University of Chinese Academy of Sciences, Beijing 100049, P. R. China.
⁴ Department of Chemistry and Biochemistry, California State University, Los Angeles, Los Angeles, California 90032, United States.

PMID: 35476406
DOI: 10.1021/acsami.2c02917

Abstract

Photocatalytic CO₂ reduction is one of the most cost-effective and environmentally friendly techniques of converting CO₂ into high-value compounds and/or fuels. However, the performance of most current photocatalytic CO₂ reduction catalysts is less than satisfactory for practical applications. Here, we synthesized a heterogeneous structure by integrating Cu₂O and a porphyrin hydrogen-bonded organic framework (PFC-45), which was then fabricated into a thin-film catalyst on carbolic paper (CP) using a facile electrophoretic deposition technology. With improved electron-hole separation efficiency and visible-light-harvesting ability, this film (PFC-45/Cu₂O@CP) significantly enhanced CO₂-to-CO photoreduction, exceeding 2.4 and 3.2 times that of PFC-45@CP and PFC-45/Cu₂O particles, respectively. Remarkably, PFC-45/Cu₂O@CP also exhibited high selectivity (99%) and outstanding activity (11.81 μmol g^-1 h^-1) for photocatalytic CO₂ reduction in pure water without any sacrificial agent. This work demonstrates a new strategy to design photocatalysts for efficient CO₂ reduction.

Keywords: CO2 photoreduction; electrophoretic deposition technology; films; heterostructure; hydrogen-bonded organic frameworks.