Zinc-substituted Ag2CrO4: A material with enhanced photocatalytic and biological activity
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Other documents of the author: Pinatti, Ivo M; Mora Tello, Ana Cristina; Barrios Trench, Aline; Foggi, Camila Cristina; Pereira, Paula; Teixeira, Mayara Mondego; jacomaci, natalia; Andres, Juan; Longo, Elson
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comunitat-uji-handle2:10234/7013
comunitat-uji-handle3:10234/8638
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Title
Zinc-substituted Ag2CrO4: A material with enhanced photocatalytic and biological activityAuthor (s)
Date
2020-05-01Publisher
ElsevierBibliographic citation
PINATTI, Ivo M., et al. Zinc-substituted Ag2CrO4: A material with enhanced photocatalytic and biological activity. Journal of Alloys and Compounds, 2020, 155315.Type
info:eu-repo/semantics/articlePublisher version
https://www.sciencedirect.com/science/article/pii/S0925838820316789Version
info:eu-repo/semantics/acceptedVersionSubject
Abstract
In the past years, new environmentally-friendly photocatalysts have been reported, but the realization of efficient visible-light driven photocatalyst with highly active bactericidal and fungicidal activity is still ... [+]
In the past years, new environmentally-friendly photocatalysts have been reported, but the realization of efficient visible-light driven photocatalyst with highly active bactericidal and fungicidal activity is still challenging. This work is a joint experimental and theoretical study on the structural, electronic, and optical properties of Ag2CrO4:Zn2+ (ACOxZn, x = 1%, 2%, and 4%) solid solutions for photocatalytic, bactericidal, and fungicidal activity. For the first time, synthesis of these innovative and multifunctional materials were performed through the cation exchange of zinc and silver using a simple, fast, and cheap co-precipitation method. Powder X-ray diffraction measurements revealed the long range order of the materials. X-ray photoelectron spectroscopy provided information about the surface of the samples demonstrating that they were pure. The materials showed short-range order as verified by FT-Raman spectroscopy. Additionally, ultraviolet-visible diffuse reflectance spectra and photoluminescence spectroscopy were used to examine the electronic properties which corroborated with the increasing photocatalytic activity for the degradation of Rhodamine B and bactericidal activity against Staphylococcus aureus and Candida albicans. Field emission scanning electron microscopy images showed different types of particles with different facets and sizes. Theoretical results based on density functional theory calculations complement the experimental results to rationalize the effects of the incorporation of Zn cations in the ACO host lattice. [-]
Investigation project
CNPq (grant no.150937/2018-0) and FAPESP (grant no.13/07296-2) ; Universitat Jaume I (project UJI-B2016-25) ; Generalitat Valenciana (project Prometeo II/2014/022, ACOMP/2014/270, and ACOMP/2015/1202) ; Ministerio de Economía y Competitividad (Spain) (project CTQ2015-65207-P) ; Ministerio de Ciencia, Innovación y Universidades (Spain) (project PGC2018-094417-B-I00).Rights
© 2020 Elsevier B.V. All rights reserved.
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