Photocatalytic Properties under Sunlight of Heterostructures AgCl/CuO Obtained by Sonochemical Method

Autor(es)

Andrade Neto, N. F. ^[1] ; Longo, E. ^[2] ; Matsui, K. N. ^[3] ; Paskocimas, C. A. ^[1] ; Bomio, M. R. D. ^[1] ; Motta, F. V. ^[1]

Afiliação do(s) autor(es)

^[1] Univ Fed Rio Grande do Norte, DEMAT, LSQM, Av Sen Salgado Filho 3000, BR-59072970 Natal, RN - Brazil

^[2] Univ Fed Sao Carlos, DQ, LIEC, Via Washington Luiz, Km 235, BR-13565905 Sao Carlos, SP - Brazil

^[3] Univ Fed Rio Grande do Norte, DEQ, LabCQ, Av Sen Salgado Filho 300, BR-59072970 Natal, RN - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Plasmonics; v. 14, n. 1, p. 79-89, FEB 2019.
• Citações Web of Science: 5

Resumo

AgCl/CuO heterostructures were synthesized via a sonochemical method. AgCl/CuO molar compositions of 1:1 and 2:1 were prepared, respectively. Such compositions were prepared using three distinct routes. The particles were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM-FEG) and UV-Vis spectroscopy (UV-Vis). In order to analyze the applicability of the heterostructure, photocatalytic tests were performed under sunlight and UV-Vis radiation for the degradation of the methylene blue dye. The results of the X-ray diffraction confirmed the formation of the AgCl/CuO heterostructure in all samples, with no evidence of doping or formation of deleterious phases. SEM images indicate a cubic-like morphology for the AgCl particles, forming Ag-0 on its surface, the CuO particles have a leaf appearance. The results of the photocatalytic activity indicate that the increase of the AgCl molar ratio from 1:1 to 2:1 accelerates the degradation of methylene blue for both the radiations and shows that sunlight decreases by at least 55% for the degradation of the methylene blue, depending on the composition, to the heterostructure. (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