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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.)

Effect of hydrothermal temperature on the antibacterial and photocatalytic activity of WO3 decorated with silver nanoparticles

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Author(s):
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Capeli, R. A. [1] ; Belmonte, T. [2] ; Caierao, J. [3] ; Dalmaschio, C. J. [4] ; Teixeira, S. R. [5] ; Mastelaro, V. R. [6] ; Chiquito, A. J. [7] ; Teodoro, M. D. [8] ; Domenegueti, J. F. M. [8] ; Longo, E. [9] ; Trindade, L. G. [1] ; Pontes, F. M. [1]
Total Authors: 12
Affiliation:
[1] Univ Estadual Paulista Unesp, Dept Chem, POB 473, BR-17033360 Bauru, SP - Brazil
[2] Univ Fed Rio Grande do Sul, Pharmaceut Sci Postgrad Program, Porto Alegre, RS - Brazil
[3] Univ Fed Rio Grande do Sul, Dept Anal, Fac Pharm, Porto Alegre, RS - Brazil
[4] Univ Fed Espirito Santo UFES, Dept Chem, BR-29075910 Vitoria, ES - Brazil
[5] Univ Estadual Paulista, Dept Phys, Fac Ciencias & Tecnol FCT, Rua Roberto Simonsen 305, BR-19060900 Presidente Prudente, SP - Brazil
[6] Univ Sao Paulo, Phys Inst Sao Carlos IFSC, Sao Carlos, SP - Brazil
[7] Univ Fed Sao Carlos, NanO LaB, Dept Phys, Via Washington Luiz, Km 235, POB 676, BR-13565905 Sao Carlos, SP - Brazil
[8] Univ Fed Sao Carlos, Dept Phys, Grp Nanoestrut Semicond, Via Washington Luiz, Km 235, POB 676, BR-13565905 Sao Carlos, SP - Brazil
[9] Univ Fed Sao Carlos, Dept Chem, CDMF, LIEC, Via Washington Luiz, Km 235, POB 676, BR-13565905 Sao Carlos, SP - Brazil
Total Affiliations: 9
Document type: Journal article
Source: Journal of Sol-Gel Science and Technology; v. 97, n. 1 NOV 2020.
Web of Science Citations: 1
Abstract

We studied the catalytic and antimicrobial properties of hierarchical architecture of WO3.Ag synthesized at 100, 150, and 200 degrees C by a very simple and reliable hydrothermal technique. The investigation carried out by XRD showed the amorphous nature of sample grown at 100 degrees C, while those at 150 and 200 degrees C crystalline nature of 3D WO3.Ag was confirmed. From FESEM and HRTEM results, it was evident that the silver nanoparticles grew in a 3D WO3.Ag host matrix. The average diameter of Ag nanoparticles by HRTEM was around 5-15 nm. Photocatalytic activities of as-prepared samples were evaluated by the degradation of rhodamine B (RhB). Samples prepared at 150 and 200 degrees C showed higher activity in comparison to sample prepared at 100 degrees C. This can be mainly attributed to the suppression of traps states and electron/hole pairs recombination as highlighted by the photoluminescence results. The as-synthetized samples showed promising antimicrobial features against various bacterial strains. The 100 degrees C WO3.Ag nanospheres exhibited the highest antibacterial activity, with very low minimum inibitory concentration (MIC) values (4.0-8.0 mu g/ml) when compared with 150 and 200 degrees C samples. (AU)

FAPESP's process: 12/14106-2 - Designe multifunctional oxides with perovskite architecture (Pb, Sr, La, BI) (Ti, Fe) O3
Grantee:Fenelon Martinho Lima Pontes
Support Opportunities: Regular Research Grants
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
FAPESP's process: 11/20536-7 - Multifunctional Ferroelectric Materials: Studies of Optical, Electrical and Photoluminescent Properties.
Grantee:Debora da Silva Lima Pontes
Support Opportunities: Scholarships in Brazil - Post-Doctoral