Development of stable S-scheme 2D–2D g-C3N4/CdS nanoheterojunction arrays for enhanced visible light photomineralisation of nitrophenol priority water pollutants

The investigation focused on creating and studying a new 2D–2D S-scheme CdS/g-C 3 N 4 heterojunction photocatalyst. Various techniques examined its structure, composition, and optical properties. This included XRD, XPS, EDS, SEM, TEM, HRTEM, DRS, and PL. The heterojunction showed a reduced charge re...

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Published inScientific reports Vol. 14; no. 1; p. 2897
Main Authors Saad, Muhammad, Bahadur, Ali, Iqbal, Shahid, Mahmood, Sajid, Tayyab, Muhammad, Alshalwi, Matar, Shah, Mazloom
Format Journal Article
LanguageEnglish
Published London Nature Publishing Group UK 05.02.2024
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Summary:The investigation focused on creating and studying a new 2D–2D S-scheme CdS/g-C 3 N 4 heterojunction photocatalyst. Various techniques examined its structure, composition, and optical properties. This included XRD, XPS, EDS, SEM, TEM, HRTEM, DRS, and PL. The heterojunction showed a reduced charge recombination rate and more excellent stability, helping to lessen photocorrosion. This was due to photogenerated holes moving more quickly out of the CdS valence band. The interface between g-C 3 N 4 and CdS favored a synergistic charge transfer. A suitable flat band potential measurement supported enhanced reactive oxygen species (ROS) generation in degrading 4-nitrophenol and 2-nitrophenol. This resulted in remarkable degradation efficiency of up to 99% and mineralization of up to 79%. The findings highlighted the practical design of the new 2D–2D S-scheme CdS/g-C 3 N 4 heterojunction photocatalyst and its potential application in various energy and environmental settings, such as pollutant removal, hydrogen production, and CO 2 conversion.
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ISSN:2045-2322
2045-2322
DOI:10.1038/s41598-024-52950-3