1.
Chem Commun (Camb)
; 51(14): 2818-20, 2015 Feb 18.
Article
in English
| MEDLINE
| ID: mdl-25585056
ABSTRACT
We investigated the ability of ß-iron silicide (ß-FeSi2) to serve as a hydrogen (H2)-evolution photocatalyst due to the potential of its conduction band bottom, which may allow thermodynamically favorable H2 evolution in spite of its small band-gap of 0.80 eV. ß-FeSi2 had an apparent quantum efficiency for H2 evolution of â¼24% up to 950 nm (near infrared light), in the presence of the dithionic acid ion (S2O6(2-)) as a sacrificial agent. It was also sensitive to infrared light (>1300 nm) for H2 evolution.