Colloidal WO3 Nanowires as a Versatile Route to Prepare a Photoanode for Solar Water Splitting

Autor(es)

Goncalves, Ricardo H. ^[1] ; Leite, Lucas D. T. ^[1] ; Leite, Edson R. ^[1]

Afiliação do(s) autor(es)

^[1] Univ Fed Sao Carlos, Dept Chem, BR-13565905 Sao Carlos, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: CHEMSUSCHEM; v. 5, n. 12, p. 2341-2347, 2012.
• Citações Web of Science: 29

Resumo

This work describes a synthetic method to produce a WO3 nanowire as well as to prepare photoanodes by colloidal nanowire deposition. We also studied the influence of a nanowire phase on the photoanode performance for water splitting. Among the nanowires synthesized by using nonhydrolytic media, the orthorhombic WO3 center dot H2O nanowire produced a photoanode with excellent performance (a photocurrent of 1.96 mA?cm-2 at 1.23 VRHE) and good photocurrent stability during long-term analysis (chronoamperometry test). The structural and photoelectrochemical characterization showed the importance of nanostructural features such as exposed (200), (020), and (002) facets and porosity in the WO3 photoanode performance. (AU)

• Processo FAPESP: 98/14324-0 - Multidisciplinary Center for Development of Ceramic Materials
• Beneficiário: Elson Longo da Silva
• Modalidade de apoio: Auxílio à Pesquisa - Centros de Pesquisa, Inovação e Difusão - CEPIDs