Tuning the Morphological, Optical, and Antimicrobial Properties of alpha-Ag2WO4 Microcrystals Using Different Solvents

Autor(es)

de Foggi, Camila C. ^[1] ; de Oliveira, Regiane C. ^[2] ; Fabbro, Maria T. ^[2] ; Vergani, Carlos E. ^[1] ; Andres, Juan ^[3] ; Longo, Elson ^[4] ; Machado, Ana L. ^[1]

Afiliação do(s) autor(es)

^[1] Sao Paulo State Univ UNESP, Sch Dent Araraquara, Dept Dent Mat & Prosthodont, Araraquara - Brazil

^[2] Sao Carlos Fed Univ UFSCar, Chem Inst Sao Carlos, Sao Carlos, SP - Brazil

^[3] Univ Jaume 1, Castellon de La Plana - Spain

^[4] Sao Paulo State Univ UNESP, Chem Inst Araraquara, Araraquara - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Crystal Growth & Design; v. 17, n. 12, p. 6239-6246, DEC 2017.
• Citações Web of Science: 4

Resumo

New, effective antimicrobial agents are constantly being evaluated for addressing the increased prevalence of bacterial and fungal infections and emerging drug resistance. In this study, alpha-Ag2WO4 microcrystals were prepared by controlled coprecipitation (90 degrees C for 10 min) in different solvents (e.g., water, an alcoholic solution, and an ammoniacal solution). From the X-ray diffraction results, the newly synthesized alpha-Ag2WO4 microcrystals are well-indexed to the orthorhombic structure. Two morphologies were seen by field-emission scanning electron microscopy: microrods in the alcoholic solution and flowerlike structures in water and the ammoniacal solution. The synthesized alpha-Ag2WO4 microcrystals exhibited antimicrobial activity against Candida albicans, Escherichia coli, and methicillin-resistant Staphylococcus aureus. In addition, the antibacterial performance of the alpha-Ag2WO4 samples as a function of their structural and morphological features was discussed. (AU)

• Processo FAPESP: 15/03654-7 - Ação antimicrobiana de óxidos bimetálicos e de revestimento depositado a plasma sobre resina acrílica
• Beneficiário: Camila Cristina de Foggi
• Modalidade de apoio: Bolsas no Brasil - Doutorado Direto
• 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