| Grant number: |
15/04511-5
|
| Support type: | Scholarships in Brazil - Post-Doctorate |
| Effective date (Start): |
August 01, 2015
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| Effective date (End): |
July 31, 2018
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| Field of knowledge: | Engineering
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Materials and Metallurgical Engineering
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Nonmetallic Materials |
| Cooperation agreement: |
Coordination of Improvement of Higher Education Personnel (CAPES)
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| Principal Investigator: | Elson Longo da Silva |
| Grantee: | Gabriela Byzynski Soares |
|
| Home Institution: |
Instituto de Química (IQ). Universidade Estadual Paulista (UNESP). Campus de Araraquara. Araraquara , SP, Brazil
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| Associated research grant: | 13/07296-2 - CDMF - Center for the Development of Functional Materials,
AP.CEPID
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Abstract
Photocatalytic processes have been extensively studying due to the elevated potential application, among others organic pollution degradation as pesticides and dyes. Although dopant effect in the efficiency alteration of this process is already known, as the efficiency photocatalytic increasing for heterostructured semiconductor uses, the redox mechanism involved in photocatalytic activity and the use of heterostructured with graphene are not well understood. Thus, the central purpose of this study is to investigate the relative defects contributions, caused in the crystal lattice of different semiconductors by doping element, in the radicals production and sensitization process in organic molecules degradation process. Besides, the evaluation photocatalytic efficiency using heterostructureed of TiO2 or ZnO with graphene to better understand the mechanism involved in photoactive (eg Rhodamine B with maximum absorption at 564 nm) and not photoactive compounds (eg Ametrine, maximum absorption at 230 nm) were done, in order to understand these effects in the sensitization process, with UV and visible light. Spectroscopic and electroanalytical techniques are used to evaluate the efficiency of charge separation and characterization of the heterostructure. (AU)
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Scientific publications
(6)
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
GOTTARDO, BIANCA;
LEMES, THIAGO H.;
BYZYNSKI, GABRIELA;
PAZIANI, MARIO H.;
VON-ZESKA-KRESS, MARCIA R.;
DE ALMEIDA, MARGARETE T. G.;
VOLANTI, DIOGO P.
One-Pot Synthesis and Antifungal Activity of Nontoxic Silver-Loaded Hydroxyapatite Nanocomposites against Candida Species.
ACS APPLIED NANO MATERIALS,
v. 2,
n. 4,
p. 2112-2120,
APR 2019.
Web of Science Citations: 1.
RASCHETTI, MARINA;
BYZYNSKI, GABRIELA;
RIBEIRO, CAUE;
LONGO, ELSON.
N-doping SrTiO3@SrCO3 heterostructure electrode: Synthesis, electrochemical characterization, and varistor application.
CERAMICS INTERNATIONAL,
v. 43,
n. 15,
p. 11722-11732,
OCT 15 2017.
Web of Science Citations: 1.
BYZYNSKI, GABRIELA;
MELO, CAMILA;
VOLANTI, DIOGO P.;
FERRER, MATEUS M.;
GOUVEIA, AMANDA F.;
RIBEIRO, CAUE;
ANDRES, JUAN;
LONGO, ELSON.
The interplay between morphology and photocatalytic activity in ZnO and N-doped ZnO crystals.
MATERIALS & DESIGN,
v. 120,
p. 363-375,
APR 15 2017.
Web of Science Citations: 26.