Title

Graphitic carbon nitride engineered α-Fe2O3/rGO heterostructure for visible-light-driven photochemical oxidation of sulfamethoxazole

Document Type

Journal Article

Publication Title

Chemical Engineering Journal

Volume

451

Publisher

Elsevier

School

School of Science

RAS ID

56427

Funders

Higher Education Commission, Pakistan Edith Cowan University Australian Research Council

Grant Number

ARC Number : DP190103548

Grant Link

http://purl.org/au-research/grants/arc/DP190103548

Comments

Asif, A. H., Rafique, N., Hirani, R. A. K., Shi, L., Zhang, S., Wang, S., & Sun, H. (2023). Graphitic carbon nitride engineered α-Fe2O3/rGO heterostructure for visible-light-driven photochemical oxidation of sulfamethoxazole. Chemical Engineering Journal, 451(2), article 138630. https://doi.org/10.1016/j.cej.2022.138630

Abstract

Rational design of semiconductor photocatalysts is an effective way to achieve efficient visible-light-driven environmental remediation. Herein, a series of graphitic carbon nitride (g-C3N4) engineered hematite (Fe2O3)/reduced graphene oxide (rGO) photocatalysts were synthesised and employed in visible-light-driven photo-Fenton-like degradation of sulfamethoxazole (SMX). The exceptional performance of the optimal photocatalyst (0.4-FerGCN-3) was achieved because of the successful structural integration of g-C3N4/Fe2O3/rGO for efficient separation and migration of photoinduced charge carriers (e−/h+). Photochemical decomposition efficiency was also optimised by analysing the important reaction parameters such as initial catalyst loading, initial H2O2 dosage, pH, and reaction temperature. Detailed studies on the generation of reactive species and degradation intermediates were performed to propose a possible mechanism for SMX degradation. The findings may provide not only a strategy for nanostructure engineering of semiconductor photocatalysts but also insights into the effective remediation of emerging contaminants such as SMX.

DOI

10.1016/j.cej.2022.138630

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