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

Author(s):Show less -

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

• Document type: Journal article
• Source: CERAMICS INTERNATIONAL; v. 50, n. 20, p. 12-pg., 2024-09-10.

Abstract

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)

• FAPESP's process: 13/07296-2 - CDMF - Center for the Development of Functional Materials
• Grantee: Elson Longo da Silva
• Support Opportunities: Research Grants - Research, Innovation and Dissemination Centers - RIDC
• FAPESP's process: 22/16840-7 - ROS generation and enhanced biocide activity of AgNbO3 semiconductor: an in-depth theoretical perspective
• Grantee: Marisa Carvalho de Oliveira
• Support Opportunities: Scholarships abroad - Research Internship - Post-doctor
• FAPESP's process: 21/01651-1 - CDMF - Functional Materials Development Center: theoretical study of multifunctional materials with potential antiviral application
• Grantee: Marisa Carvalho de Oliveira
• Support Opportunities: Scholarships in Brazil - Post-Doctoral