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In-depth investigation on the photostability and charge separation mechanism of Ag3PO4/g-C3N4 photocatalyst towards very low visible light intensity


Citation

Mukhair, Hayati and Halim Abdullah, Abdul and Adlan Mohd Hir, Zul and Syazwani Osman, Nur and Zainal, Zulkarnain and Hong Ngee, Lim (2023) In-depth investigation on the photostability and charge separation mechanism of Ag3PO4/g-C3N4 photocatalyst towards very low visible light intensity. Journal of Molecular Liquids, 376. art. no. 121494. pp. 1-14. ISSN 0167-7322

Abstract

A facile chemical precipitation approach was used to synthesis visible light-driven Ag3PO4/g-C3N4 photocatalysts, with varying g-C3N4 content. The photostability performances were tested against methylorange (MO) dye removal using very low light intensity (23 W). The fabrication of g-C3N4 onto Ag3PO4 surface has resulted in a substantial enhancement in the photostability and performance of pristine Ag3PO4. The Ag3PO4/g-C3N4, with a ratio of 1:0.03, displayed a rapid and almost a complete photoremoval efficiency within 10 min under normal conditions. The improved activities under visible irradiation were attributed to the photoexcited carrier’s outstanding separation efficiency as demonstrated by the band gap, photoluminescence spectra, and cyclic voltametric studies. Positive holes (h+) and superoxide radicals’ anions (O2) were found to be the dominant species responsible for the degradation via the Z-scheme mechanism.


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Additional Metadata

Item Type: Article
Divisions: Faculty of Science
Institut Nanosains dan Nanoteknologi
DOI Number: https://doi.org/10.1016/j.molliq.2023.121494
Publisher: Elsevier
Keywords: Silver phosphate; Charge separation mechanism; Graphitic carbon nitride; Visible light; Photostability; Clean water and sanitation
Depositing User: Ms. Che Wa Zakaria
Date Deposited: 08 Aug 2024 03:18
Last Modified: 08 Aug 2024 03:18
Altmetrics: http://www.altmetric.com/details.php?domain=psasir.upm.edu.my&doi=10.1016/j.molliq.2023.121494
URI: http://psasir.upm.edu.my/id/eprint/108570
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