CS bonds mediated rapid charge transfer in hm-C4N3/CdS heterostructure for efficient photocatalytic CO2 reduction

Shuting Li; Kang Zhong; Jinman Yang; Chentao Zhu; Hangmin Xu; Jian Xu; Xingwang Zhu; Jia Yan; Huaming Li; Hui Xu

doi:10.1016/j.jcis.2024.12.247

CS bonds mediated rapid charge transfer in hm-C₄N₃/CdS heterostructure for efficient photocatalytic CO₂ reduction

J Colloid Interface Sci. 2025 Jan 3;684(Pt 1):300-308. doi: 10.1016/j.jcis.2024.12.247. Online ahead of print.

Authors

Shuting Li¹, Kang Zhong¹, Jinman Yang¹, Chentao Zhu¹, Hangmin Xu², Jian Xu², Xingwang Zhu³, Jia Yan⁴, Huaming Li⁵, Hui Xu⁶

Affiliations

¹ School of the Environment and Safety Engineering, Institute for Energy Research, Jiangsu University, Zhenjiang 212013, Jiangsu, PR China.
² College of Environmental Science and Engineering, Institute of Technology for Carbon Neutralization, Yangzhou University, Yangzhou 225009, Jiangsu, PR China.
³ College of Environmental Science and Engineering, Institute of Technology for Carbon Neutralization, Yangzhou University, Yangzhou 225009, Jiangsu, PR China. Electronic address: zxw@yzu.edu.cn.
⁴ School of the Environment and Safety Engineering, Institute for Energy Research, Jiangsu University, Zhenjiang 212013, Jiangsu, PR China. Electronic address: yanj@ujs.edu.cn.
⁵ School of the Environment and Safety Engineering, Institute for Energy Research, Jiangsu University, Zhenjiang 212013, Jiangsu, PR China. Electronic address: lhm@ujs.edu.cn.
⁶ School of the Environment and Safety Engineering, Institute for Energy Research, Jiangsu University, Zhenjiang 212013, Jiangsu, PR China; Jiangsu Collaborative Innovation Center of Technology and Material of Water Treatment, Suzhou University of Science and Technology, Suzhou 215009, Jiangsu, PR China. Electronic address: xh@ujs.edu.cn.

PMID: 39798426
DOI: 10.1016/j.jcis.2024.12.247

Abstract

The quest for stable and high-performance photocatalysts is pivotal in advancing the field of photocatalytic CO₂ reduction. Traditional single-component semiconductors are often impeded by their inability to concurrently achieve a broad light absorption spectrum, efficient separation of photogenerated charge carriers, and enduring stability, thereby constraining their photocatalytic efficacy. In this study, we introduce an innovative hm-C₄N₃/CdS heterojunction that broadens the light absorption spectrum and significantly enhances the separation efficiency of photogenerated charge carriers. Notably, this type-II heterojunction design effectively curbs the photocorrosion of CdS, and the CS bonds within the structure expedite electron transfer. Under irradiation, the photocatalyst exhibits a marked increase in activity and stability, yielding CO and CH₄ at rates of 67.5 μmol g^-¹ h^-¹ and 7.4 μmol g^-¹ h^-¹, respectively. This work provides valuable insights for promoting efficient and stable photocatalyst for CO₂ reduction.

Keywords: CO(2) reduction; Photocatalytic; Type-II heterojunction; hm-C(4)N(3).