Morphological aspects and optical properties of Ag4P2O7

Author(s)

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

Affiliation

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

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

• Document type: Journal article
• Source: Materials Letters; v. 248, p. 193-196, AUG 1 2019.
• Web of Science Citations: 0

Abstract

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)

• FAPESP's process: 15/11917-8 - Study of photoluminescent properties and photocatalytic of Ag4P2O7, Ag3-2xNixPO4 and Ag3-2xCuxPO4
• Grantee: Wyllamanney da Silva Sczancoski
• Support Opportunities: Scholarships in Brazil - Doctorate
• FAPESP's process: 12/14004-5 - Investigation of the photoluminescence and photocatalytic properties of pure and Mn, Cu, and Zn-doped BaWO4 and BaMoO4 powders
• Grantee: Júlio César Sczancoski
• Support Opportunities: Scholarships in Brazil - Post-Doctoral