Morphological aspects and optical properties of Ag4P2O7

Autor(es)

Pereira, Wyllamanney da S. ^[1] ; Gozzo, Cipriano B. ^[1] ; Longo, Elson ^[1] ; Leite, Edson R. ^[2] ; Sczancoski, Julio C. ^[1]

Afiliação do(s) autor(es)

^[1] Univ Fed Sao Carlos, Dept Chem, Sao Carlos, SP - Brazil

^[2] CNPEM, Brazilian Nanotechnol Natl Lab, Campinas, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Materials Letters; v. 248, p. 193-196, AUG 1 2019.
• Citações Web of Science: 0

Resumo

The structural, morphological and optical properties of silver pyrophosphate (Ag4P2O7) powders were investigated in detail. This material was synthesized by chemical precipitation (CP), conventional hydrothermal and microwave-assisted hydrothermal. The crystallization of hexagonal Ag4P2O7 phase presented a dependence with both temperature and synthesis approach. A system composed of doughnut/hexagonal-shaped microparticles was evidenced for the powders obtained by CP. The hydrothermal treatments modified these particle shapes. Ultraviolet-visible spectra revealed a band gap controlled by indirect electronic transitions. Broadband photoluminescence spectra with maximum emissions in blue region were detected, suggesting the participation of several intermediary energy levels in the band gap. (C) 2019 Elsevier B.V. All rights reserved. (AU)

• Processo FAPESP: 15/11917-8 - Estudo das Propriedades Fotoluminescentes e Fotocatalíticas do Ag4P2O7, Ag3-2xNixPO4 e Ag3-2xCuxPO4
• Beneficiário: Wyllamanney da Silva Sczancoski
• Modalidade de apoio: Bolsas no Brasil - Doutorado
• Processo FAPESP: 12/14004-5 - Investigação das propriedades fotoluminescentes e fotocatalíticas de pós de BaWO4 e BaMoO4 puros e dopados com Mn, Cu e Zn
• Beneficiário: Júlio César Sczancoski
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado