Efficient photocatalytic degradation of organic pollutants using α-SnWO 4 with g-C 3 N 4 nanocomposites for wastewater remediation.

Autor: Keerthana SP; Department of Physics, Alagappa University, Karaikudi 630 003, Tamil Nadu, India., Yuvakkumar R; Department of Physics, Alagappa University, Karaikudi 630 003, Tamil Nadu, India. Electronic address: yuvakkumarr@alagappauniversity.ac.in., Ravi G; Department of Physics, Alagappa University, Karaikudi 630 003, Tamil Nadu, India; Department of Physics, Chandigarh University, Mohali 140 413, Punjab, India. Electronic address: raviganesa@rediffmail.com., Sankar VR; Department of Civil Engineering, Thiagarajar College of Engineering, Madurai, 625 015, Tamil Nadu, India., Metha SA; Department of Electronics and Communication Engineering. Koneru Lakshmaiah Education Foundation, Guntur, Andhra Pradesh 522 302, India., Sagadevan S; Nanotechnology & Catalysis Research Centre, University of Malaya, Kuala Lumpur 50603, Malaysia.
Jazyk: angličtina
Zdroj: Chemosphere [Chemosphere] 2024 Nov 05, pp. 143691. Date of Electronic Publication: 2024 Nov 05.
DOI: 10.1016/j.chemosphere.2024.143691
Abstrakt: Wastewater management has become necessary in this industrialized era to meet the water needs of the world. Wastewater is one of the major crises in depletion of the environment. Photocatalysis is considered as the best way to remove pollutants. Therefore, in this study, pure and g-C 3 N 4 -SnWO 4 nanocomposites were produced employing hydrothermal route. Prepared composites were studied by various techniques. SnWO 4 band gap were altered by introduction of g-C 3 N 4 . The morphology was uniformly developed by the addition of g-C 3 N 4 to the SnWO 4 . Evans Blue dye was employed as model pollutant. The photocatalytic action was improved by adding g-C 3 N 4 , which formed a heterojunction with SnWO 4 . The calculated rate constant was 0.000878, 0.0068, 0.01 and 0.0122 min -1 for EB, SnWO 4 -EB, 0.1g g-C 3 N 4 -SnWO 4 -EB and 0.2g g-C 3 N 4 -SnWO 4 -EB. The rate constant increased for 0.2 g g-C 3 N 4 -SnWO 4 photocatalyst. A heterojunction appeared between g-C 3 N 4 and SnWO 4 facilitated SnWO 4 for better e - /h + pair's separation and a lower recombination rate, which increased photocatalytic action of product. 0.2 g of g-C 3 N 4 -SnWO 4 is a promising candidate for future wastewater degradation.
Competing Interests: Declaration of Competing Interest ☒ The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(Copyright © 2024. Published by Elsevier Ltd.)
Databáze: MEDLINE
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