Urchin-like band-matched Fe2O3@In2S3 hybrid as an efficient photocatalyst for CO2 reduction

Xiaohong Ma; Danyang Li; Huacheng Jin; Xi Zeng; Jian Qi; Zongxian Yang; Feifei You; Fangli Yuan

doi:10.1016/j.jcis.2023.06.075

Urchin-like band-matched Fe₂O₃@In₂S₃ hybrid as an efficient photocatalyst for CO₂ reduction

J Colloid Interface Sci. 2023 Oct 15:648:1025-1033. doi: 10.1016/j.jcis.2023.06.075. Epub 2023 Jun 15.

Authors

Xiaohong Ma¹, Danyang Li², Huacheng Jin³, Xi Zeng⁴, Jian Qi⁵, Zongxian Yang¹, Feifei You⁶, Fangli Yuan⁷

Affiliations

¹ State Key Laboratory of Multi-phase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, PR China; School of Chemical Engineering, University of Chinese Academy of Sciences, Beijing 100049, PR China.
² College of Textile and Clothing, Yancheng Institute of Technology, Yancheng 224051, PR China.
³ State Key Laboratory of Multi-phase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, PR China.
⁴ School of Ecology and Environment, Beijing Technology and Business University, Beijing 100048, PR China.
⁵ School of Chemical Engineering, University of Chinese Academy of Sciences, Beijing 100049, PR China; State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, PR China. Electronic address: jqi@ipe.ac.cn.
⁶ College of Textile and Clothing, Yancheng Institute of Technology, Yancheng 224051, PR China. Electronic address: ffyouycit@163.com.
⁷ State Key Laboratory of Multi-phase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, PR China; Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing, 100049, PR China. Electronic address: flyuan@ipe.ac.cn.

PMID: 37343489
DOI: 10.1016/j.jcis.2023.06.075

Abstract

Herein, an urchin-like Fe₂O₃@In₂S₃ hybrid composite is designed and synthesized using a facile process. The composite efficiently harvests light in both the ultraviolet and visible regions, and the unique hierarchical structure provides several advantages for photocatalytic applications: (i) a suitable band-matching structure and broadband-light absorbing capacity enable the reduction of CO₂ into hydrocarbon, (ii) the extensive network of interfacial contact between nano-sized Fe₂O₃ and In₂S₃ significantly increases the separation of charge carriers and enhances the utilization of photogenerated electron-hole pairs, and (iii) an abundance of surface oxygen vacancies provide numerous active sites for CO₂ molecule adsorption. The optimized Fe₂O₃@In₂S₃ composite generated CO from the photocatalytic reduction of CO₂ at a rate of 42.83 μmol·g^-1·h^-1, and no signs of deactivation were observed during continued testing for 32 h under 300 W Xe lamp irradiation.

Keywords: CO(2) photoreduction; Fe(2)O(3)@In(2)S(3); Heterojunction; Urchin-like.