Nanocomposites of Nb2O5 and ZnO with reduced graphene oxide for heterogeneous photocatalysis of dyes

Leonardo Zavilenski Fogaça; Jean César Marinozi Vicentini; Camila Fabiano de Freitas; Thais Lazzarotto Braga; Fernando Alves da Silva; Monique de Souza; Mauro Luciano Baesso; Wilker Caetano; Vagner Roberto Batistela; Mara Heloisa Neves Olsen Scaliante

Catalysis Communications (Dec 2023)

Nanocomposites of Nb2O5 and ZnO with reduced graphene oxide for heterogeneous photocatalysis of dyes

Leonardo Zavilenski Fogaça,
Jean César Marinozi Vicentini,
Camila Fabiano de Freitas,
Thais Lazzarotto Braga,
Fernando Alves da Silva,
Monique de Souza,
Mauro Luciano Baesso,
Wilker Caetano,
Vagner Roberto Batistela,
Mara Heloisa Neves Olsen Scaliante

Affiliations

Leonardo Zavilenski Fogaça: Department of Chemical Engineering, State University of Maringá, Colombo Avenue 5790, Zip Code 87020-900, Maringá, Paraná, Brazil; Corresponding author.
Jean César Marinozi Vicentini: Department of Chemical Engineering, State University of Maringá, Colombo Avenue 5790, Zip Code 87020-900, Maringá, Paraná, Brazil
Camila Fabiano de Freitas: Department of Chemistry, Federal University of Santa Catarina, Eng. Agronômico Andrei Cristian Ferreira Street, Zip Code 88040-900, Florianópolis, Santa Catarina, Brazil
Thais Lazzarotto Braga: Photodynamic Systems Research Center, Department of Chemistry, State University of Maringá, Colombo Avenue 5790; Zip Code 87020-900, Maringá, Paraná, Brazil
Fernando Alves da Silva: Department of Chemical Engineering, Federal Technological University of Paraná, Marcílio Dias St. 635, Zip Code 86812-460, Apucarana, Paraná, Brazil
Monique de Souza: Department of Physics, State University of Maringá, Colombo Avenue 5790, Zip Code 87020-900, Maringá, Paraná, Brazil
Mauro Luciano Baesso: Department of Physics, State University of Maringá, Colombo Avenue 5790, Zip Code 87020-900, Maringá, Paraná, Brazil
Wilker Caetano: Photodynamic Systems Research Center, Department of Chemistry, State University of Maringá, Colombo Avenue 5790; Zip Code 87020-900, Maringá, Paraná, Brazil
Vagner Roberto Batistela: Department of Pharmacology and Therapeutics, State University of Maringá, Colombo Avenue 5790, Zip Code 87020-900, Maringá, Paraná, Brazil
Mara Heloisa Neves Olsen Scaliante: Department of Chemical Engineering, State University of Maringá, Colombo Avenue 5790, Zip Code 87020-900, Maringá, Paraná, Brazil

Journal volume & issue: Vol. 185
p. 106799

Abstract

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The removal of organic pollutants from water is a significant challenge in environmental remediation. In this study, the potential of ZnO and Nb2O5 semiconductors with the impregnation of three percentages of reduced graphene oxide (rGO) as efficient photocatalysts for the degradation of methylene blue (MB) dye aqueous solutions was investigated in a UV mini-reactor. The heterostructures were synthesized by hydrothermal method and characterized by analytical techniques, such as XRD, XPS, ATR-FTIR, Raman, TEM, N2 physisorption, photoacoustic, photoluminescence, and pHZPC. Both rGONb2O5 and rGOZnO catalysts demonstrated considerable photocatalytic activity, resulting in the degradation of MB within a relatively short time period.

Published in Catalysis Communications

ISSN: 1566-7367 (Print); 1873-3905 (Online)
Publisher: Elsevier
Country of publisher: Netherlands
LCC subjects: Science: Chemistry
Website: https://www.journals.elsevier.com/catalysis-communications

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