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Entree

Eletrocatálise Plasmônica: Investigando Processos de Transferência de Carga Dependentes da Forma em nanocristais de Cu2O-Au

Processo: 18/25567-7
Linha de fomento:Bolsas no Exterior - Estágio de Pesquisa - Pós-Doutorado
Vigência (Início): 31 de março de 2019
Vigência (Término): 29 de novembro de 2019
Área do conhecimento:Ciências Exatas e da Terra - Química
Pesquisador responsável:Susana Inés Córdoba de Torresi
Beneficiário:Anderson Gabriel Marques da Silva
Supervisor no Exterior: Szunerits Sabine
Instituição-sede: Instituto de Química (IQ). Universidade de São Paulo (USP). São Paulo , SP, Brasil
Local de pesquisa : Université Lille 1 - Sciences et Technologies, França  
Vinculado à bolsa:17/12407-9 - Nanoestruturas híbridas de óxidos de metais de transição e polímeros condutores para aplicações diversas, BP.PD
Assunto(s):Eletrocatálise   Óxido de cobre

Resumo

Plasmonically-enhanced or plasmonically-mediated transformations (SPR-enhanced or SPR-mediated catalysis) represent a new frontier in heterogeneous catalysis, in which visible light is employed as a sustainable energy input to drive and control chemical reactions. Although many papers have reported on the SPR-mediated catalytic activities of Ag, Au, Cu, and bimetallic nanoparticles, only a few studies have focused on electrocatalysis and the establishment of structureperformance relationships. To address these issues, this proposed research project will focus on the synthesis of truly controlled nanomaterials based on Cu2O-Au crystals displaying controlled shapes, for generating fundamental knowledge on the understanding of how excited carries generated during the plasmon excitation of gold nanoparticles may affect charge transfer to Cu2O crystals having different shapes (cubes, cuboctahedrons, and octahedrons). The target reactions will be the electrocatalytic oxidation of water and glucose, in which Cu2O has demonstrated to be a promising catalyst for both reactions. The understanding of these interactions between particular surface facets and gold nanoparticles remains lacking and crucial for clarifying the mechanisms behind the observed plasmonic catalytic performances. Our focus is to consolidate a collaboration between the two partners to systematically prepare Cu2O-Au crystals and then investigate their plasmonic electrocatalytic performances of as function of these parameters.

Publicações científicas
(Referências obtidas automaticamente do Web of Science e do SciELO, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores)
DA SILVA, ANDERSON G. M.; FERNANDES, CIBELE G.; HOOD, ZACHARY D.; PENG, RUI; WU, ZILI; DOURADO, ANDRE H. B.; PARREIRA, LUANNA S.; DE OLIVEIRA, DANIELA C.; CAMARGO, PEDRO H. C.; CORDOBA DE TORRESI, I, SUSANA. PdPt-TiO2 nanowires: correlating composition, electronic effects and O-vacancies with activities towards water splitting and oxygen reduction. APPLIED CATALYSIS B-ENVIRONMENTAL, v. 277, NOV 15 2020. Citações Web of Science: 0.
SAADA, TAMAZOUZT NAIT; DA SILVA, ANDERSON GABRIEL MARQUES; SUBRAMANIAN, PALANIAPPAN; PANG, LIUQING; ADNANE, NOUAL; DJAFARI-ROUHANI, BAHRAM; MISHYN, VLADYSLAV; MEZIANE, DALILA; MELINTE, SORIN; SANDU, GEORGIANA; DUMEIGNIL, FRANCK; PAUL, SEBASTIEN; WOJCIESZAK, ROBERT; BOUKHERROUB, RABAH; SZUNERITS, SABINE. Plasmon-enhanced electrocatalytic oxygen reduction in alkaline media on gold nanohole electrodes. JOURNAL OF MATERIALS CHEMISTRY A, v. 8, n. 20, p. 10395-10401, MAY 28 2020. Citações Web of Science: 0.

Por favor, reporte erros na lista de publicações científicas escrevendo para: cdi@fapesp.br.