Issue 4, 2024

Interfacial engineering boosting the photocatalytic performance of a CdS/C3N5 heterojunction for organic pollutant degradation: mechanism, degradation pathway, and DFT calculation

Abstract

Heterojunction modulation can maintain the excellent properties of base materials while also modulating the charge behavior of the interface to improve the redox capacity. Herein, a promising heterogeneous photocatalyst based on a carbon nitride framework with 3 : 5 C : N stoichiometry (g-C3N5) and cadmium sulfide (CdS) was synthesized via a simple hydrothermal method. The formed CdS/C3N5 heterojunction promoted efficient separation of photoexcited electron–hole pairs and allowed charge storage at the interface, resulting in a high redox capacity. As expected, the apparent rate constant value of methyl orange (MO) increased to 0.078 min−1, which is almost 13 and 7 times that of g-C3N5 and CdS, respectively. The MO degradation pathways were further revealed by density functional theory (DFT) calculation and liquid chromatography-mass spectrometry (LC-MS) methods. Most importantly, the band gap structure, active species and their respective contributions are analyzed in depth to improve the photocatalytic performance of the catalyst. This work provides a new perspective for the construction of heterojunctions and environmental remediation.

Graphical abstract: Interfacial engineering boosting the photocatalytic performance of a CdS/C3N5 heterojunction for organic pollutant degradation: mechanism, degradation pathway, and DFT calculation

Supplementary files

Article information

Article type
Paper
Submitted
08 Dec 2023
Accepted
14 Jan 2024
First published
17 Jan 2024

Catal. Sci. Technol., 2024,14, 1026-1036

Interfacial engineering boosting the photocatalytic performance of a CdS/C3N5 heterojunction for organic pollutant degradation: mechanism, degradation pathway, and DFT calculation

J. Wang, D. Chen, C. Ma, Y. Du, H. Che and Y. Ao, Catal. Sci. Technol., 2024, 14, 1026 DOI: 10.1039/D3CY01698F

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements