Preparation of (Ga1−xZnx) (N1−xOx) solid-solution from ZnGa2O4 and ZnO as a photo-catalyst for overall water splitting under visible light

2007 ◽  
Vol 327 (1) ◽  
pp. 114-121 ◽  
Author(s):  
Xiaojun Sun ◽  
Kazuhiko Maeda ◽  
Maël Le Faucheur ◽  
Kentaro Teramura ◽  
Kazunari Domen
Keyword(s):  
Solid Solution ◽  
Visible Light ◽  
Water Splitting ◽  
Photo Catalyst ◽  
Overall Water Splitting

Overall water splitting using (oxy)nitride photocatalysts

2006 ◽  
Vol 78 (12) ◽  
pp. 2267-2276 ◽  
Author(s):  
Kazuhiko Maeda ◽  
Kentaro Teramura ◽  
Nobuo Saito ◽  
Yasunobu Inoue ◽  
Hisayoshi Kobayashi ◽  
...  
Keyword(s):  
Solid Solution ◽  
Photocatalytic Activity ◽  
Visible Light ◽  
Band Gap ◽  
Water Splitting ◽  
Electronic Configuration ◽  
Oxide Nanoparticles ◽  
Visible Light Region ◽  
Overall Water Splitting ◽  
Light Region

Oxynitride photocatalysts with d10 electronic configuration are presented as effective non-oxide catalysts for overall water splitting. Germanium nitride (β-Ge3N4) having a band gap of 3.8-3.9 eV modified with RuO2 nanoparticles as a cocatalyst is shown to achieve stoichiometric decomposition of H2O into H2 and O2 under UV irradiation (λ > 200 nm). A novel solid solution of GaN and ZnO, (Ga1-xZnx)(N1-xOx), with a band gap of 2.4-2.8 eV (depending on composition) achieves overall water splitting under visible light (λ > 400 nm) when loaded with an appropriate cocatalyst. The narrower band gap of the solid solution is attributed to the bonding between Zn and N atoms at the top of the valence band. The photocatalytic activity of (Ga1-xZnx)(N1-xOx) for overall water splitting is strongly dependent on both the cocatalyst and the crystallinity and composition of the material. The quantum efficiency of (Ga1-xZnx)(N1-xOx) with Rh and Cr mixed-oxide nanoparticles is 2-3 % at 420-440 nm, which is the highest reported efficiency for overall water splitting in the visible-light region.

GaN:ZnO Solid Solution as a Photocatalyst for Visible-Light-Driven Overall Water Splitting

2005 ◽  
Vol 127 (23) ◽  
pp. 8286-8287 ◽  
Author(s):  
Kazuhiko Maeda ◽  
Tsuyoshi Takata ◽  
Michikazu Hara ◽  
Nobuo Saito ◽  
Yasunobu Inoue ◽  
...  
Keyword(s):  
Solid Solution ◽  
Visible Light ◽  
Water Splitting ◽  
Overall Water Splitting ◽  
Visible Light Driven

Modification of (Zn1+xGe)(N2Ox) Solid Solution as a Visible Light Driven Photocatalyst for Overall Water Splitting

2007 ◽  
Vol 19 (8) ◽  
pp. 2120-2127 ◽  
Author(s):  
Yungi Lee ◽  
Kentaro Teramura ◽  
Michikazu Hara ◽  
Kazunari Domen
Keyword(s):  
Solid Solution ◽  
Visible Light ◽  
Water Splitting ◽  
Overall Water Splitting ◽  
Visible Light Driven

Using Pd as a Cocatalyst on GaN–ZnO Solid Solution for Visible-Light-Driven Overall Water Splitting

2018 ◽  
Vol 148 (3) ◽  
pp. 933-939 ◽  
Author(s):  
Zheng Li ◽  
Fuxiang Zhang ◽  
Jingfeng Han ◽  
Jian Zhu ◽  
Mingrun Li ◽  
...  
Keyword(s):  
Solid Solution ◽  
Visible Light ◽  
Water Splitting ◽  
Overall Water Splitting ◽  
Visible Light Driven
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