Photocatalytic H 2 Evolution Reaction from Aqueous Solutions over Band Structure-Controlled (AgIn) x Zn 2(1 - x ) S 2 Solid Solution Photocatalysts with Visible-Light Response and Their Surface Nanostructures
Tokyo University of Science · Kurashiki University of Science and the Arts · +1 more institution
Abstract
(AgIn)(x)Zn(2(1-x))S(2) solid solutions between ZnS photocatalyst with a wide band gap and AgInS(2) with a narrow band gap showed photocatalytic activities for H(2) evolution from aqueous solutions containing sacrificial reagents, SO(3)(2)(-) and S(2)(-), under visible-light irradiation (lambda >or= 420 nm) even without Pt cocatalysts. Loading of the Pt cocatalysts improved the photocatalytic activity. Pt (3 wt %)-loaded (AgIn)(0.22)Zn(1.56)S(2) with a 2.3 eV band gap showed the highest activity for H(2) evolution, and the apparent quantum yield at 420 nm amounted to 20%. H(2) gas evolved at a rate of 3.3 L m(-2) x h(-1) under irradiation using a solar simulator (AM 1.5). The diffuse reflection and the…
Citation impact
- FWCI
- 17.46
- Percentile
- 100%
- References
- 26
Authors
4- ITIssei TsujiCorresponding
Tokyo University of Science, Kurashiki University of Science and the Arts, Japan Science and Technology Agency
- HKHideki Kato
Japan Science and Technology Agency, Kurashiki University of Science and the Arts, Tokyo University of Science
- HKHisayoshi Kobayashi
Kurashiki University of Science and the Arts, Tokyo University of Science, Japan Science and Technology Agency
- AKAkihiko Kudo
Kurashiki University of Science and the Arts, Japan Science and Technology Agency, Tokyo University of Science
Topics & keywords
- Photocatalysis
- Chemistry
- Band gap
- Photoluminescence
- Aqueous solution
- Solid solution
- Valence (chemistry)
- Quantum yield
- Clean water and sanitation