Enhanced photocatalytic activity of CaMoO4/g-C3N4 composites obtained via sonochemistry synthesis

Autor(es)

Santiago, Anderson A. G. ^[1] ; Macedo, Elida M. ^[1] ; Oliveira, Fernanda K. F. ^[1] ; Tranquilin, Ricardo L. ^[2] ; Teodoro, Marcio D. ^[3] ; Longo, Elson ^[2] ; Motta, V, Fabiana ; Bomio, Mauricio R. D. ^[4]

Afiliação do(s) autor(es)

^[1] Fed Univ Rio Grande do Norte UFRN, Dept Mat Engn, LSQM Lab Chem Synth Mat, POB 1524, Natal, RN - Brazil

^[2] Univ Fed Sao Carlos, Dept Chem, LIEC, BR-13565905 Sao Carlos, SP - Brazil

^[3] Univ Fed Sao Carlos, Dept Phys, BR-13565905 Sao Carlos, SP - Brazil

^[4] Motta, Fabiana, V, Fed Univ Rio Grande do Norte UFRN, Dept Mat Engn, LSQM Lab Chem Synth Mat, POB 1524, Natal, RN - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Materials Research Bulletin; v. 146, FEB 2022.
• Citações Web of Science: 0

Resumo

Herein, CaMoO4-based g-C3N4 composites are successfully synthesized by the sonochemistry method. All samples present photocatalytic activity under UV-light irradiation by employing methylene blue (MB). The structural analysis is available through X-ray diffraction (XRD), Raman, and FTIR spectroscopies, which verified a scheelite-type tetragonal structure for CaMoO4 with slight distortion in {[}MoO4] clusters between samples and confirmation of g-C3N4 presence in the powder. FEG-SEM images reveal a higher formation of interfaces between CaMoO4 and g-C3N4 particles. Photoluminescence spectra are measured to study the photogenerated charge recombination process. Furthermore, the studies show that increased dosage of g-C3N4 onto the composite provides up to 95.1% of MB discoloration in 180 min, while CaMoO4 without g-C3N4 only provides 40.2%. (AU)

• Processo FAPESP: 13/07296-2 - CDMF - Centro de Desenvolvimento de Materiais Funcionais
• Beneficiário: Elson Longo da Silva
• Modalidade de apoio: Auxílio à Pesquisa - Centros de Pesquisa, Inovação e Difusão - CEPIDs