Efficient photodegradation of 4-chlorophenol under solar radiation using a new ZnO/ZnS/carbon xerogel composite as a photocatalyst

Autor(es)

de Moraes, Nicolas Perciani ^[1] ; Marins, Lucca Gabriel Penida ^[1] ; Yamanaka, Marcelo Yuji de Moura ^[1] ; Bacani, Rebeca ^[1] ; Rocha, Robson da Silva ^[1] ; Rodrigues, Liana Alvares ^[1]

Afiliação do(s) autor(es)

^[1] Escola Engn Lorena EEL USP, Estr Municipal Campinho S-N, BR-12602810 Lorena, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY; v. 418, SEP 1 2021.
• Citações Web of Science: 0

Resumo

This paper explored the development of a new zinc oxide/zinc sulfide/carbon xerogel composite photocatalyst aiming at the efficient 4-chlorophenol photodegradation under solar light. X-ray diffractometry highlights that the crystalline structure of zinc sulfide depended on the presence of zinc oxide, changing from face-centered cubic in the pure ZnS to hexagonal (2 H) in the composite. Furthermore, the addition of carbon xerogel to the composite led to a reduction in the particle size and an increase in the specific surface area. Photocatalytic results show that the ternary composite (XC/ZnO-ZnS) displayed the best photocatalytic response for 4-chlorophenol degradation among the tested materials. Such photocatalytic improvement is probably related to the formation of heterojunctions between the semiconductors and the carbonaceous phase, as well as the enhanced morphological properties of the composite. The superiority of the XC/ZnO-ZnS was further corroborated in the chronoamperometry tests, as it presented the highest photocurrent generation. (AU)

• Processo FAPESP: 18/16360-0 - Desenvolvimento de compósitos ternários ZnO/Bi2O3/Xerogel de carbono como fotocatalisadores para a degradação de poluentes orgânicos persistentes
• Beneficiário: Nicolas Perciani de Moraes
• Modalidade de apoio: Bolsas no Brasil - Doutorado
• Processo FAPESP: 18/12035-7 - Propriedades mecânicas e antimicrobianas de nanocompósito Ag/PMMA
• Beneficiário: Gilmar Patrocínio Thim
• Modalidade de apoio: Auxílio à Pesquisa - Regular