Ultrasound assisted fabrication of InVO 4 /In 2 S 3 heterostructure for enhanced sonophotocatalytic degradation of pesticides.

Autor: Yogesh Kumar K; Department of Chemistry, Faculty of Engineering and Technology, Jain University, Bangalore 562112, India., Prashanth MK; Department of Chemistry, BNM Institute of Technology, Banashankari, Bangalore 560070, India., Shanavaz H; Department of Chemistry, Faculty of Engineering and Technology, Jain University, Bangalore 562112, India., Parashuram L; Department of Chemistry, Nitte Meenakshi Institute of Technology, Yelahanka, Bangalore 560064 India., Alharethy F; Department of Chemistry, College of Science, King Saud University, 11451 Riyadh, Saudi Arabia., Jeon BH; Department of Earth Resources and Environmental Engineering, Hanyang University, 222, Wangsimni-ro, Seongdong-gu, Seoul 04763, Republic of Korea. Electronic address: bhjeon@hanyang.ac.krdr.msragh., Raghu MS; Department of Chemistry, New Horizon College of Engineering, Outer Ring Road, Bangalore, 560103, India. Electronic address: u@newhorizonindia.edu.
Jazyk: angličtina
Zdroj: Ultrasonics sonochemistry [Ultrason Sonochem] 2023 Nov; Vol. 100, pp. 106615. Date of Electronic Publication: 2023 Sep 23.
DOI: 10.1016/j.ultsonch.2023.106615
Abstrakt: A cost effective and environmentally benign ultrasonic method has been developed for the synthesis of InVO 4 (InV), In 2 S 3 (InS) and the InVO 4 /In 2 S 3 heterostructure (InV/InS). All the designed materials were evaluated for their structural, morphological, spectroscopic, and electrochemical characterizations. Materials were examined for photocatalytic, sonocatalytic, and sonophotocatalytic degradation of carbofuran (CBF) and diazinon (DZN) pesticides under visible light. InV/InS showed enhanced degradation of CBF and DZN when compared to InV and InS. Photocatalytic degradation was accelerated by ultrasonication and found to degrade 97 and 98 % of CBF and DZN in 60 and 70 min, respectively. The reaction conditions, like pH, catalyst dosage, acoustic intensity, and ultrasound power, were carefully optimized. Electron spin resonance (ESR) spectroscopy shows the generation of superoxide radical anion and hydroxyl radicals as reactive species during photoredox reaction. The CBF and DZN degradation intermediates were analyzed using liquid chromatography mass spectroscopy (LC-MS) that shows the mineralization of the CBF and DZN to CO 2 and H 2 O. The effect of Cl - , and PO 4 3- were examined towards degradation of CBF and DZN under optimal conditions in the presence of InV/InS. The degradation of CBF and DZN is decreased in presence of Cl - , CO 3 2- and NO 3 - but PO 4 3- ions does not show any effect on degradation. The bandgap and Mott-Schottky results suggest the existence of type-II heterostructure between InV and InS through the interface. The synthesis of heterostructure and degradation of pesticides utilizes ultrasonic waves, which prove their multiple applications and attract researchers towards the effective use of sonication.
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 © 2023 The Authors. Published by Elsevier B.V. All rights reserved.)
Databáze: MEDLINE
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