Rational Design of W-Doped Ag3PO4 as an Efficient Antibacterial Agent and Photocatalyst for Organic Pollutant Degradation
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Title
Rational Design of W-Doped Ag3PO4 as an Efficient Antibacterial Agent and Photocatalyst for Organic Pollutant DegradationAuthor (s)
Date
2020-09-11Publisher
ACS PublicationsISSN
2470-1343Bibliographic citation
Rational Design of W-Doped Ag3PO4 as an Efficient Antibacterial Agent and Photocatalyst for Organic Pollutant Degradation Aline B. Trench, Thales R. Machado, Amanda F. Gouveia, Camila C. Foggi, Vinícius Teodoro, Isaac Sánchez-Montes, Mayara M. Teixeira, Letícia G. da Trindade, Natalia Jacomaci, Andre Perrin, Christiane Perrin, Jose M. Aquino, Juan Andrés, and Elson Longo. ACS Omega 2020 5 (37), 23808-23821 DOI: 10.1021/acsomega.0c03019Type
info:eu-repo/semantics/articlePublisher version
https://pubs.acs.org/doi/10.1021/acsomega.0c03019Version
info:eu-repo/semantics/publishedVersionSubject
Abstract
Bacterial and organic pollutants are major problems with potential adverse impacts on human health and the environment. A promising strategy to alleviate these impacts consists in designing innovative photocatalysts ... [+]
Bacterial and organic pollutants are major problems with potential adverse impacts on human health and the environment. A promising strategy to alleviate these impacts consists in designing innovative photocatalysts with a wider spectrum of application. In this paper, we report the improved photocatalytic and antibacterial activities of chemically precipitated Ag3PO4 microcrystals by the incorporation of W at doping levels 0.5, 1, and 2 mol %. The presence of W directly influences the crystallization of Ag3PO4, affecting the morphology, particle size, and surface area of the microcrystals. Also, the characterization via experimental and theoretical approaches evidenced a high density of disordered [AgO4], [PO4], and [WO4] structural clusters due to the substitution of P5+ by W6+ into the Ag3PO4 lattice. This leads to new defect-related energy states, which decreases the band gap energy of the materials (from 2.27 to 2.04 eV) and delays the recombination of e′–h• pairs, leading to an enhanced degradation process. As a result of such behaviors, W-doped Ag3PO4 (Ag3PO4:W) is a better visible-light photocatalyst than Ag3PO4, demonstrated here by the photodegradation of potential environmental pollutants. The degradation of rhodamine B dye was 100% in 4 min for Ag3PO4:W 1%, and for Ag3PO4, the obtained result was 90% of degradation in 15 min of reaction. Ag3PO4:W 1% allowed the total degradation of cephalexin antibiotic in only 4 min, whereas pure Ag3PO4 took 20 min to achieve the same result. For the degradation of imidacloprid insecticide, Ag3PO4:W 1% allowed 90% of degradation, whereas Ag3PO4 allowed 40%, both in 20 min of reaction. Moreover, the presence of W-dopant results in a 16-fold improvement of bactericidal performance against methicillin-resistant Staphylococcus aureus. The outstanding results using the Ag3PO4:W material demonstrated its potential multifunctionality for the control of organic pollutants and bacteria in environmental applications. [-]
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ACS Omega, Vol. 5, n.37 (2020)Funder Name
Fundação de Amparo à Pesquisa do Estado de São Paulo | Coordenação de Aperfeiçoamento de Pessoal de Nível Superior—Brasil (CAPES) | Conselho Nacional de Desenvolvimento Científico e Tecnológico | Universitat Jaume I | Ministerio de Ciencia, Innovación y Universidades
Project code
FAPESP 2013/07296-2 | FAPESP 2017/12594-3 | FAPESP 2019/01732-1 | FAPESP 2019/13507-2 | CNPq, 142035/2017-3 | UJI-B2016-25 | UJI-B2019-30 | PGC2018-094417-B-I00
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info:eu-repo/semantics/openAccess
info:eu-repo/semantics/openAccess
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