Perspective on CdS-based S-scheme photocatalysts for efficient photocatalytic applications: Characterisation techniques and optimal semiconductor coupling

Suhaimi, Nur Hidayatul Syazwani, Shah Syed, Jawad Ali, Azhar, Rahil, Adzis, Nur Syamimi, Abdul Halim, Ommy Madina, Chang, Yee Hui Robin, Taylor, Stuart H. ORCID: https://orcid.org/0000-0002-1933-4874, Bailey, Liam A., Ab Rahim, Mohd Hasbi, Ramli, Muhammad Zahiruddin, Nawawi, Wan Izhan and Mohd Ishak, Mohd Azlan 2025. Perspective on CdS-based S-scheme photocatalysts for efficient photocatalytic applications: Characterisation techniques and optimal semiconductor coupling. International Journal of Hydrogen Energy 165 , 150929. 10.1016/j.ijhydene.2025.150929

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Abstract

Efficient utilisation of visible (Vis) and ultraviolet (UV) light in photocatalytic solar-driven applications remains a significant challenge, primarily due to innate characteristics of a single semiconductor photocatalyst, including narrow light absorption range, inadequate redox capability and poor charge separation. In this regard, the unique charge migration mechanism inherent to S-scheme photocatalysts offers a promising alternative by broadening the light absorption spectrum while facilitating charge separation for robust redox capability through judicious semiconductor pairing. Cadmium sulphide (CdS) has become a key component in S-scheme based photocatalysts due to its strong visible light response and high reduction potential. CdS-based photocatalysts possessing S-scheme charge transfer pathways are proven to enhance the photocatalytic performance in H2 production, CO2 reduction and pollutant degradation. This article delves into recent advances in CdS-based S-scheme heterojunctions, highlighting the common paired semiconductors and their photocatalytic performance across various energy and environmental applications.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Schools > Chemistry Research Institutes & Centres > Cardiff Catalysis Institute (CCI)
Additional Information:	License information from Publisher: LICENSE 1: URL: http://creativecommons.org/licenses/by-nc-nd/4.0/, Start Date: 2027-08-13
Publisher:	Elsevier
ISSN:	0360-3199
Date of Acceptance:	9 August 2025
Last Modified:	19 Aug 2025 10:45
URI:	https://orca.cardiff.ac.uk/id/eprint/180550

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