Investigation of the photocatalytic and optical properties of the SrMoO4/g-C3N4 heterostructure obtained via sonochemical synthesis with temperature control

Debora F Dos Santos; Anderson A G Santiago; Marcio D Teodoro; Fabiana V Motta; Mauricio R D Bomio

doi:10.1016/j.jenvman.2022.116396

Investigation of the photocatalytic and optical properties of the SrMoO₄/g-C₃N₄ heterostructure obtained via sonochemical synthesis with temperature control

J Environ Manage. 2023 Jan 1;325(Pt A):116396. doi: 10.1016/j.jenvman.2022.116396. Epub 2022 Oct 14.

Authors

Debora F Dos Santos¹, Anderson A G Santiago², Marcio D Teodoro³, Fabiana V Motta², Mauricio R D Bomio²

Affiliations

¹ LSQM - Laboratory of Chemical Synthesis of Materials - Department of Materials Engineering, Federal University of Rio Grande Do Norte - UFRN, P.O. Box 1524, Natal, RN, Brazil. Electronic address: debora.ferreira.109@ufrn.edu.br.
² LSQM - Laboratory of Chemical Synthesis of Materials - Department of Materials Engineering, Federal University of Rio Grande Do Norte - UFRN, P.O. Box 1524, Natal, RN, Brazil.
³ Department of Physics, Federal University of São Carlos, 13565-905, São Carlos, SP, Brazil.

PMID: 36244280
DOI: 10.1016/j.jenvman.2022.116396

Abstract

In this work, nanomaterials of the SrMoO₄/g-C₃N₄ heterostructure were synthesized in a single step by the sonochemical method with controlled temperatures. Structural and morphological investigations indicate the formation of heterojunctions, revealing the presence of g-C₃N₄ (CN) in the heterostructures and an interface region between the phases. Optical analyzes show broadening of the wavelength absorption range and a decrease in the photoluminescence (PL) intensity of the heterojunctions compared to the CN emission spectrum, proving a decrease in the recombination of the photogenerated charges. The results of the photocatalytic tests indicate that the insertion of CN promoted photocatalytic degradation of the Methylene Blue (MB), Rhodamine B (RhB) and Crystal Violet (CV) organic contaminants, up to 99.58%, 100% and 98.65%, respectively. The mixture of dyes used and reuse cycles was performed to analyze the applicability of the compounds in a real situation.

Keywords: Heterostructure; Photocatalytic properties; Sonochemical; SrMoO(4); Temperature control; g-C(3)N(4).