Direct and indirect light energy harvesting with films of ambiently deposited ZnO nanoparticles

Registro completo de metadados
MetadadosDescriçãoIdioma
Autor(es): dc.contributorUniversidade Estadual Paulista (Unesp)-
Autor(es): dc.contributorUniversity of Bath-
Autor(es): dc.contributorMaterials and Chemical Characterisation Facility MC2-
Autor(es): dc.creatorIrikura, Kallyni [UNESP]-
Autor(es): dc.creatorMarken, Frank-
Autor(es): dc.creatorFletcher, Philip J.-
Autor(es): dc.creatorKociok-Köhn, Gabriele-
Autor(es): dc.creatorZanoni, Maria Valnice Boldrin [UNESP]-
Data de aceite: dc.date.accessioned2022-02-22T00:34:46Z-
Data de disponibilização: dc.date.available2022-02-22T00:34:46Z-
Data de envio: dc.date.issued2020-12-11-
Data de envio: dc.date.issued2020-12-11-
Data de envio: dc.date.issued2020-10-15-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1016/j.apsusc.2020.146927-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/201879-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/201879-
Descrição: dc.descriptionIndirect photoelectrochemical processes are possible when employing a palladium film to separate photochemical and electrochemical reactions. Here, an exploratory indirect photoelectrochemical system is developed based on ZnO or Pt@ZnO nanoparticle photocatalysts ambiently deposited onto platinum, glassy carbon, or palladium membrane electrodes and exposed to blue (385 nm) LED light in the presence of glucose hole quencher (in aqueous NaCl). It is demonstrated that under these conditions photo-excitation followed by charge transport of conduction band electrons via inter-grain conduction across ZnO particles triggers the photo-current responses. The conduction band electrons then trigger formation of interstitial hydrogen in a palladium membrane. Transport of the hydrogen across the palladium membrane into the electrochemical compartment occurs within 1–2 min of switching on the light. A proof-of-principle fuel cell with oxygen gas diffusion electrode (cathode) and indirect photo-anode is shown to operate with up to 28 μW cm−2 power output during illumination. Important power-limiting parameters and suggestions for future improvements are discussed.-
Descrição: dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)-
Descrição: dc.descriptionSão Paulo State University (Unesp) Institute of Chemistry-
Descrição: dc.descriptionNational Institute of Alternative Technologies for Detection Toxicological Evaluation and Removal of Micropollutants and Radioactive Substances (INCT-DATREM) São Paulo State University (Unesp) Institute of Chemistry-
Descrição: dc.descriptionUniversity of Bath Department of Chemistry-
Descrição: dc.descriptionUniversity of Bath Materials and Chemical Characterisation Facility MC2-
Descrição: dc.descriptionSão Paulo State University (Unesp) Institute of Chemistry-
Descrição: dc.descriptionNational Institute of Alternative Technologies for Detection Toxicological Evaluation and Removal of Micropollutants and Radioactive Substances (INCT-DATREM) São Paulo State University (Unesp) Institute of Chemistry-
Descrição: dc.descriptionFAPESP: 2014/50945-1-
Descrição: dc.descriptionFAPESP: 2019/07020-3-
Descrição: dc.descriptionFAPESP: 465571/2014-0-
Descrição: dc.descriptionFAPESP: INCT-DATREN-
Idioma: dc.languageen-
Relação: dc.relationApplied Surface Science-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectGlucose-
Palavras-chave: dc.subjectPalladium membrane-
Palavras-chave: dc.subjectPhotocatalytic hydrogen generation-
Palavras-chave: dc.subjectPt@ZnO-
Palavras-chave: dc.subjectZnO nanoparticles-
Título: dc.titleDirect and indirect light energy harvesting with films of ambiently deposited ZnO nanoparticles-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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