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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Zinc-substituted Ag2CrO4: A material with enhanced photocatalytic and biological activity

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Author(s):
Pinatti, Ivo M. [1] ; Tello, Ana C. M. [1] ; Trench, Aline B. [1] ; de Foggi, Camila C. [1] ; Pereira, Paula F. S. [1] ; Teixeira, Mayara M. [1] ; Jacomaci, Natalia [2] ; Andres, Juan [3] ; Longo, Elson [1]
Total Authors: 9
Affiliation:
[1] Univ Fed Sao Carlos, CDMF, LIEC, POB 676, BR-13565905 Sao Carlos - Brazil
[2] Sao Paulo State Univ Julio Mesquita Filho, UNESP, Inst Chem, LIEC, Araraquara, SP - Brazil
[3] Univ Jaume I UJI, Dept Analyt & Phys Chem, Castellon de La Plana 12071 - Spain
Total Affiliations: 3
Document type: Journal article
Source: Journal of Alloys and Compounds; v. 835, SEP 15 2020.
Web of Science Citations: 0
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 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. (C) 2020 Elsevier B.V. All rights reserved. (AU)

FAPESP's process: 13/07296-2 - CDMF - Center for the Development of Functional Materials
Grantee:Elson Longo da Silva
Support Opportunities: Research Grants - Research, Innovation and Dissemination Centers - RIDC