Influence of rare-earth doping on the BiVO4 photoanode structure for biomass degradation and fuel cells

• Grant number: 23/01415-1
• Support Opportunities: Regular Research Grants
• Start date: September 01, 2023
• End date: August 31, 2025
• Field of knowledge: Physical Sciences and Mathematics - Chemistry - Physical-Chemistry
• Agreement: CNPq
• Principal Investigator: Lucia Helena Mascaro Sales
• Grantee: Lucia Helena Mascaro Sales
• Host Institution: Centro de Ciências Exatas e de Tecnologia (CCET). Universidade Federal de São Carlos (UFSCAR). São Carlos , SP, Brazil
• Associated research grant: 13/07296-2 - CDMF - Center for the Development of Functional Materials, AP.CEPID
• Associated scholarship(s): 23/12399-7 - Influence of rare-earth doping on the BiVO4 photoanode structure for biomass degradation and fuel cells, BP.JD

Abstract

This project has the main goals to synthesize BiVO4 doped with rareearths, in particular yttrium (Y3+), in different amounts of doping to study the influence of the dopant on the photoelectrochemical degradation of biomasses collected in real industrial environments (textile, agricultural, paper and chemical). A photoelectrochemical system with photo anode coupling developed with an already known photocathode will be evaluated for concomitant H2O reduction and effluent oxidation. The oxides will be produced by an environmentally friendly route using polyvinyl alcohol as a solvent and applied on titanium and/or FTO substrate. The physical characterization of the films will be carried out by X-ray diffraction techniques, scanning electron microscopy and dispersive energy analysis, Raman spectroscopy and band-gap determination. The electrochemical characterizations will be performed by voltametric techniques and electrochemical impedance spectroscopy. Photocurrent studies will be performed for BiVO4 and yttrium-doped BiVO4 films. The efficiency of pollutant species degradation processes during photoelectrocatalytic experiments will be evaluated using instrumental analytical techniques of UV/Vis spectrophotometry, high performance liquid chromatography and analysis of total organic carbon content. In the photoelectrochemical system coupled with H2O reduction, the products generated will be quantified. This process will be evaluated by chromatographic techniques to identify and quantify the by-products formed. (AU)

Scientific publications

(4)

(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)

GUARDIANO, MATHEUS G.; RIBEIRO, LARA K.; GONZAGA, ISABELLE M. D.; MASCARO, LUCIA H.. Effect of Cerium Precursors on Ce-Doped BiVO₄ Nanoscale-Thick Films as Photoanodes: Implications for Water Splitting. ACS APPLIED NANO MATERIALS, v. 7, n. 16, p. 10-pg., 2024-08-14. (23/11548-9, 23/12399-7, 17/11986-5, 23/01415-1)

ASSIS, MARCELO; SANTOS, JEZIEL R.; CIPRIANO, MATHEUS H. L.; REIS, ROBERTA Y. N.; RIBEIRO, LARA K.; MASCARO, LUCIA H.; LONGO, ELSON; ANDRES, JUAN. Enhanced antimicrobial activity of Cu-decorated graphene nanoplatelets and carbon nanotubes. SURFACES AND INTERFACES, v. 53, p. 12-pg., 2024-09-12. (23/12399-7, 13/07296-2, 23/01415-1, 21/11326-0)

GUARDIANO, MATHEUS GABRIEL; GONZAGA, ISABELLE MARIA DUARTE; RIBEIRO, LARA KELLY; ALMEIDA, CAIO VINICIUS DA SILVA; MASCARO, LUCIA HELENA. Gd-BiVO4: An efficient photoanode for pharmaceuticals degradation in contaminated waters via solar photoelectrocatalysis. CHEMICAL ENGINEERING JOURNAL, v. 503, p. 13-pg., 2024-12-10. (23/12399-7, 21/14693-4, 23/01415-1, 17/11986-5, 23/11548-9, 13/07296-2)

GOUVEIA, AMANDA FERNANDES; ASSIS, MARCELO; RIBEIRO, LARA KELLY; GOMES, EDUARDO DE OLIVEIRA; TEODORO, MARCIO DALDIN; LONGO, ELSON; ANDRES, JUAN. Disentangling the structure, optical properties, and photoluminescence emissions of NiW_1-xMo_xO₄ (x=25, 50, and 75%) solid solutions: experimental and DFT studies. JOURNAL OF MATERIALS CHEMISTRY C, v. N/A, p. 11-pg., 2025-02-24. (23/12399-7, 23/01415-1, 22/10340-2, 23/08525-7, 13/07296-2)