Discovering a selective semimetal element to increase hematite photoanode charge separation efficiency.
No Thumbnail Available
Date
2019
Journal Title
Journal ISSN
Volume Title
Publisher
Abstract
This work describes a colloidal deposition process that exploits the thermal spreading ability of Sb over
a hematite surface to obtain a mesoporous film with extensive open porosity and high degree of Sb5+
dispersion. The addition of Sb increased the efficiency of water oxidation by a factor of 4.5 and photocurrent
at 1.23 VRHE by a factor of 6.5 compared to those of an unmodified hematite film prepared under the same
conditions. The overall efficiency increase for water oxidation is attributed to more efficient charge
separation. Sb was found to be an excellent selective semimetal modifier with high dispersion over the material.
Description
Keywords
Citation
NOGUEIRA, A. E. et al. Discovering a selective semimetal element to increase hematite photoanode charge separation efficiency. Journal of Materials Chemistry A, v. 7, n. 28, p. 16992–16998, 2019. Disponível em: <https://pubs.rsc.org/en/content/articlelanding/2019/ta/c9ta05452a>. Acesso em: 11 out. 2022.