Study of photoluminescent properties and photocatalytic of Ag4P2O7, Ag3-2xNixPO4 and Ag3-2xCuxPO4

• Grant number: 15/11917-8
• Support type: Scholarships in Brazil - Doctorate
• Effective date (Start): January 01, 2016
• Effective date (End): July 31, 2019
• Field of knowledge: Engineering - Materials and Metallurgical Engineering
• Principal Investigator: Elson Longo da Silva
• Grantee: Wyllamanney da Silva Pereira
• Home Institution: Centro de Ciências Exatas e de Tecnologia (CCET). Universidade Federal de São Carlos (UFSCAR). São Carlos , SP, Brazil
• Associated research grant: 13/07296-2 - CDMF - Center for the Development of Functional Materials, AP.CEPID
• Associated scholarship(s): 16/23663-3 - Amino acids-stabilized pyrophosphates nanoparticles controlled by self-assembly, BE.EP.DR

Abstract

In a scenario energy crisis and environmental problems, there is great interest in developing new materials with attractive emission properties of visible light for the development of electro-optical devices or may actively act as photocatalysts in the degradation of organic pollutants. In this context, silver-based materials have promising properties since they exhibit high performance in the photocatalytic degradation of organic dyes as well as bactericidal activity and photoluminescence. For these reasons, this research project aims to investigate the photoluminescent properties and photocatalytic powders Ag4P2O7, Ag3PO4, Ag3-2xNixPO4 and Ag3-2xCuxPO4. The Ag4P2O7 crystals are synthesized by coprecipitation method. While the powders Ag3PO4, Ag3-2xNixPO4 and Ag3-2xCuxPO4 will be synthesized by hydrothermal method assisted by microwave. The crystallinity of these materials will be studied by the technique of X-ray diffraction (XRD). Raman spectroscopy and absorption in the infrared (FT-IR) are used to identify structural units thereof. The morphology will be evaluated by scanning electron microscopy (FEG-SEM). The absorption spectroscopy in the ultraviolet and visible regions (UV-vis) and photoluminescence (PL) will be employed in order to analyze the optical properties of powders. The photocatalytic activity of these materials under UV light will be studied from experiments involving the degradation of aqueous solutions of rhodamine organic dye B (Rh B).

Scientific publications

(5)

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

PEREIRA, WYLLAMANNEY DA S.; GOZZO, CIPRIANO B.; LONGO, ELSON; LEITE, EDSON R.; SCZANCOSKI, JULIO C. Morphological aspects and optical properties of Ag4P2O7. Materials Letters, v. 248, p. 193-196, AUG 1 2019. Web of Science Citations: 0.

SCZANCOSKI, JULIO C.; MAYA-JOHSON, SANTIAGO; PEREIRA, WYLLAMANNEY DA SILVA; LONGO, ELSON; LEITE, EDSON R. Atomic Diffusion Induced by Electron-Beam Irradiation: An in Situ Study of Ag Structures Grown from alpha-Ag2WO4. Crystal Growth & Design, v. 19, n. 1, p. 106-115, JAN 2019. Web of Science Citations: 1.

PEREIRA, WYLLAMANNEY DA S.; SCZANCOSKI, JULIO C.; CALDERON, YORMARY N. C.; MASTELARO, VALMOR R.; BOTELHO, GLEICE; MACHADO, THALES R.; LEITE, EDSON R.; LONGO, ELSON. Influence of Cu substitution on the structural ordering, photocatalytic activity and photoluminescence emission of Ag3-2xCuxPO4 powders. Applied Surface Science, v. 440, p. 61-72, MAY 15 2018. Web of Science Citations: 1.

LA PORTA, F. A.; NOGUEIRA, A. E.; GRACIA, LOURDES; PEREIRA, W. S.; BOTELHO, G.; MULINARI, T. A.; ANDRES, JUAN; LONGO, E. An experimental and theoretical investigation on the optical and photocatalytic properties of ZnS nanoparticles. JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS, v. 103, p. 179-189, APR 2017. Web of Science Citations: 11.

PEREIRA, WYLLAMANNEY DA SILVA; FERRER, MATEUS MENEGHETTI; BOTELHO, GLEICE; GRACIA, LOURDES; NOGUEIRA, ICAMIRA COSTA; PINATTI, IVO MATEUS; ROSA, IEDA LUCIA VIANA; LA PORTA, FELIPE DE ALMEIDA; ANDRES, JUAN; LONGO, ELSON. Effects of chemical substitution on the structural and optical properties of alpha-Ag2-2xNixWO4 (0 <= x <= 0.08) solid solutions. Physical Chemistry Chemical Physics, v. 18, n. 31, p. 21966-21975, AUG 31 2016. Web of Science Citations: 4.