Synthesis of host‐guest hematite photoelectrodes for solar water splitting

• Tipo: Artigo em Revista Científica Internacional
• Data: 2019-04-29

Autores

Filipe Francisco (Autor) FEUP; Paula Dias (Autor) FEUP; Dzmitry Ivanou (Autor) FEUP; Fátima Santos (Autor) Outra; João Azevedo (Autor) FEUP; Adélio Mendes (Autor) FEUP

Revista

Título: ChemNanoMat

Vol. 5 Nº 7

Páginas: 911-920

Editora: Wiley-Blackwell

Indexação

ISI Web of Knowledge - 1 Citação

ISI Web of Science

Scopus - 3 Citações

Projetos Associados

SunStorage - Recolha e armazenamento de energia solar

LEPABE - Laboratório de Engenharia de Processos, Ambiente, Biotecnologia e Energia

LEPABE-2-ECO-INNOVATION - LEPABE-2-ECO-INNOVATION

SunFlow - Armazenamento de energia solar em baterias redox de caudal

HopeH2 - Dispositivo tandem PEC-PV eficiente, estável e escalável para geração de hidrogénio solar

Outras Informações

ID Authenticus: P-00Q-PRN

DOI: 10.1002/cnma.201900141

Abstract (EN): Hematite (α-Fe2O3) is a promising semiconductor for photoelectrochemical (PEC) water splitting, due to its abundance, low-cost and excellent stability. However, the efficiency of α-Fe2O3 photoelectrodes has been limited by its low hole mobility and fast electron-hole recombination. Host-guest architectures have emerged as a suitable design, which involves the use of a nanostructured collector for high solar absorption while maintaining an ultrathin absorber layer for better charge transport. In this study, a thin mesoporous SiO2 host template coated with a conductive thin layer of TiO2 was optimized to support the α-Fe2O3 film. The α-Fe2O3 thin layer was deposited by spray pyrolysis and then coated with a FeNiOOH co-catalyst. A photocurrent improvement of ca. 85% over planar α-Fe2O3 thin film reference was registered demonstrating the potential of this host-guest approach. © 2019 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 11