Chemometric Investigation of Platinum Electrodeposition on Titanium Substrates for Ethanol Electro-oxidation

Autor(es)

Santos, Joao Paulo Tenorio da Silva ; Lemos, Sherlan Guimaraes ; Gromboni, Murilo Fernando ; Del Colle, Vinicius ; Mascarenhas, Artur Jose Santos ; Fernandes, Valeria Cristina

• Tipo de documento: Artigo Científico
• Fonte: ELECTROCATALYSIS; v. 14, n. 4, p. 11-pg., 2023-03-10.

Resumo

The objective of this work is to employ chemometric tools to investigate the influence of the synthesis parameters in platinum electrodeposition on a titanium substrate using cyclic voltammetry. Through a 2(2) factorial design, using as response the maximum peak current density during the ethanol electro-oxidation, one can observe that the number of cycles and the scan rate are both significant, but the interaction between them is not. The maximum peak current density is observed for the electrode obtained with NC = 20 cycles and SR = 200 mV s(-1). The structural characterization indicates that the surface irregularity of the substrate causes an uneven growth of the (200) and (220) crystallographic planes, which present different performances in the electro-oxidation of ethanol. The response surface methodology indicates that the best experimental condition is that obtained with 10 cycles and 218 mV s(-1). The Pt/Ti electrodes prepared with the optimized parameters are promising. (AU)

• Processo FAPESP: 13/07296-2 - CDMF - Centro de Desenvolvimento de Materiais Funcionais
• Beneficiário: Elson Longo da Silva
• Modalidade de apoio: Auxílio à Pesquisa - Centros de Pesquisa, Inovação e Difusão - CEPIDs
• Processo FAPESP: 19/00288-0 - Degradação de antibióticos via processos eletroquímicos oxidativos avançados
• Beneficiário: Murilo Fernando Gromboni
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado