| Texto completo | |
| Autor(es): |
Sanchez de la Cruz, Pamela Teresa
;
Irikura, Kallyni
;
Lachgar, Abdessadek
;
Cardoso, Juliano Carvalho
;
Alarcon Cavero, Hugo
;
Boldrin Zanoni, Maria Valnice
Número total de Autores: 6
|
| Tipo de documento: | Artigo Científico |
| Fonte: | ELECTROCATALYSIS; v. 11, n. 5, p. 9-pg., 2020-06-25. |
| Resumo | |
Copper(I) oxide (Cu2O) was electrochemically deposited on fluorine-doped tin oxide (FTO) glass electrode and covered with a thin layer of poly(3,4-ethylenedioxythiophene) polystyrene sulfonate (PEDOT:PSS). The electrode was studied in the photoelectrocatalytic reduction of CO2. Methanol was obtained as the major product with a concentration of 460 mu mol L(-1)with a photoconversion yield of 12% after 60 min of reaction under the conditions of UV-Vis (125 W Hg high pressure lamp) and application of 0.0 V vs Ag/AgCl in 3.0 mol L-1 KCl in buffer sodium carbonate/sodium bicarbonate 0.1 mol L(-1)saturated with CO(2)gas. The PEDOT:PSS has led to a significant improvement in CO(2)conversion due to rapid transfer of photogenerated holes. Consequently, the thin layer of PEDOT:PSS also reduces the photooxidation of Cu2O to CuO. The Cu2O/PEDOT:PSS photocatalytic system was found to have excellent photostability. Similar yield of alcohol was observed after reusing the catalyst six times. (AU) | |
| Processo FAPESP: | 17/12790-7 - Preparação e caracterização de eletrodos nanoestruturados de TiO2 modificados com estruturas metal orgânico (MOFs) para a aplicação na pré-concentração e redução de CO2 |
| Beneficiário: | Kallyni Irikura |
| Modalidade de apoio: | Bolsas no Brasil - Pós-Doutorado |
| Processo FAPESP: | 15/18109-4 - Contribuição dos Materiais Nanoestruturados na Eletroanálise de Fármacos e Corantes, na Oxidação e Redução Fotoeletrocatalítica de Poluentes Orgânicos e Inorgânicos e Desinfecção de Água |
| Beneficiário: | Maria Valnice Boldrin |
| Modalidade de apoio: | Auxílio à Pesquisa - Regular |