SnS₂ and Ho-doped SnS₂ thin films: Synergistic, DFT, photocatalytic, and antibacterial studies

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Radja, Imane ; Khane, Yasmina ; Oliveira, Marisa C. ; Longo, Elson ; Ribeiro, Renan A. P. ; Isik, Mehmit ; Bennabi, Farid ; Ech-Chergui, Abdelkader Nebatti ; Guezzoul, M'hamed ; Mukherjee, Sanat Kumar ; Aissa, Brahim ; Amrani, Bouhalouane ; Khan, Mohammad Mansoob

• Tipo de documento: Artigo Científico
• Fonte: CERAMICS INTERNATIONAL; v. 50, n. 20, p. 12-pg., 2024-09-10.

Resumo

This study investigates Ho-doped tin disulfide (Ho-SnS2) thin films prepared via spray coating, focusing on varying Ho doping levels (0 at. %, 2 at. %, and 4 at. %). Structural analysis through XRD and SEM showcased enhanced crystallinity and morphology in Ho-SnS2 films. Raman and XPS studies provided insight into the film's composition and chemical states. The antibacterial properties of the films were investigated using a bacterial growth inhibition assay. The results showed significant antibacterial activity against Gram-positive and Gram-negative bacteria, highlighting the potential applications of Ho-SnS2 thin films in antibacterial coatings. Ho-SnS2 films exhibited superior photocatalytic activity and antibacterial properties compared to SnS2 films, attributed to efficient charge separation. DFT analysis proposed a mechanism for the antibacterial activity. These findings highlight the efficacy of the spray coating technique in producing Ho-SnS2 films and the potential of Ho-SnS2 films for diverse applications like photocatalysis and antibacterial coatings. (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
• Processo FAPESP: 22/16840-7 - Geração de ROS e atividade biocida superior do semicondutor AgNbO3: uma perspectiva teórica aprofundada
• Beneficiário: Marisa Carvalho de Oliveira
• Modalidade de apoio: Bolsas no Exterior - Estágio de Pesquisa - Pós-Doutorado
• Processo FAPESP: 21/01651-1 - CDMF - Centro de Desenvolvimento de Materiais Funcionais: estudo teórico de materiais multifuncionais com potencial aplicação antiviral
• Beneficiário: Marisa Carvalho de Oliveira
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado