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(Referência obtida automaticamente do Web of Science, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores.)

Photoluminescence and Photocatalytic Properties of Ag3PO4 Microcrystals: An Experimental and Theoretical Investigation

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Autor(es):
Botelho, Gleice [1] ; Andres, Juan [2] ; Gracia, Lourdes [2] ; Matos, Leandro S. [1] ; Longo, Elson [3]
Número total de Autores: 5
Afiliação do(s) autor(es):
[1] Univ Fed Sao Carlos, INCTMN UFSCar, POB 676, BR-13565905 Sao Carlos, SP - Brazil
[2] Univ Jaume 1, Dept Quim Fis & Analit, Castellon de La Plana 12071 - Spain
[3] Univ Estadual Paulista, INCTMN UNESP, POB 355, BR-14801907 Araraquara, SP - Brazil
Número total de Afiliações: 3
Tipo de documento: Artigo Científico
Fonte: CHEMPLUSCHEM; v. 81, n. 2, p. 202-212, FEB 2016.
Citações Web of Science: 23
Resumo

The structural, morphological, and optical properties of Ag3PO4 microcrystals were systematically characterized by using a combination of theoretical calculations and experimental techniques. These microcrystals were synthesized by the microwave-assisted hydrothermal (MAH) method. XRD, Rietveld refinements, and FTIR spectroscopy were employed to carry out a structural analysis; the morphologies of the microcrystals were examined by FEG-SEM. First-principles computational studies were used to calculate the geometries of bulk Ag3PO4 and its (010), (100), (001), (110), (101), (011), and (111) surfaces. A continuous decrease in the energy of the (100) surface led to a good agreement between the experimental and theoretical morphologies. Optical properties were investigated by UV/Vis spectroscopy and photoluminescence (PL) measurements, which revealed a maximum PL emission at lambda = 444 nm. The MAH-synthesized sample exhibited good activity for the photocatalytic degradation of methyl orange dye under visible irradiation. The photocatalytic activity and PL behavior were correlated with the observed morphology. (AU)

Processo FAPESP: 08/57872-1 - Instituto Nacional de Ciências dos Materiais em Nanotecnologia
Beneficiário:Elson Longo da Silva
Linha de fomento: Auxílio à Pesquisa - Temático
Processo FAPESP: 13/07296-2 - CDMF - Centro de Desenvolvimento de Materiais Funcionais
Beneficiário:Elson Longo da Silva
Linha de fomento: Auxílio à Pesquisa - Centros de Pesquisa, Inovação e Difusão - CEPIDs