Dual Functional CuO1–x Clusters for Enhanced Photocatalytic Activity and Stability of a Pt Cocatalyst in an Overall Water-Splitting Reaction

2018 ◽  
Vol 6 (12) ◽  
pp. 17340-17351 ◽  
Author(s):  
Yuan Lin ◽  
Yunpeng Liu ◽  
Yuhang Li ◽  
Yonghai Cao ◽  
Jiangnan Huang ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Water Splitting ◽  
Overall Water Splitting ◽  
Dual Functional

Photocatalytic Activity for Overall Water Splitting of RuO2-Loaded YxIn2-xO3 (x = 0.9−1.5)

2008 ◽  
Vol 112 (13) ◽  
pp. 5000-5005 ◽  
Author(s):  
N. Arai ◽  
N. Saito ◽  
H. Nishiyama ◽  
Y. Shimodaira ◽  
H. Kobayashi ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Water Splitting ◽  
Overall Water Splitting

scholarly journals Vapor-Phase Photocatalytic Overall Water Splitting Using Hybrid Methylammonium Copper and Lead Perovskites

Nanomaterials ◽  
2020 ◽  
Vol 10 (5) ◽  
pp. 960 ◽  
Author(s):  
Teresa García ◽  
Rocío García-Aboal ◽  
Josep Albero ◽  
Pedro Atienzar ◽  
Hermenegildo García
Keyword(s):  
Photocatalytic Activity ◽  
Water Splitting ◽  
Vapor Phase ◽  
Irradiation Time ◽  
H2 Production ◽  
Charge Migration ◽  
Copper Halide ◽  
Overall Water Splitting ◽  
Sacrificial Agent ◽  
Maximum Production Rate

Films or powders of hybrid methylammonium copper halide perovskite exhibit photocatalytic activity for overall water splitting in the vapor phase in the absence of any sacrificial agent, resulting in the generation of H2 and O2, reaching a maximum production rate of 6 μmol H2 × g cat−1h−1 efficiency. The photocatalytic activity depends on the composition, degreasing all inorganic Cs2CuCl2Br2 perovskite and other Cl/Br proportions in the methylammonium hybrids. XRD indicates that MA2CuCl2Br2 is stable under irradiation conditions in agreement with the linear H2 production with the irradiation time. Similar to copper analogue, hybrid methylammonium lead halide perovskites also promote the overall photocatalytic water splitting, but with four times less efficiency than the Cu analogues. The present results show that, although moisture is strongly detrimental to the photovoltaic applications of hybrid perovskites, it is still possible to use these materials as photocatalysts for processes requiring moisture due to the lack of relevance in the photocatalytic processes of interparticle charge migration.

Photocatalytic activity of hydrothermally synthesized tantalate pyrochlores for overall water splitting

2006 ◽  
Vol 300 (2) ◽  
pp. 186-190 ◽  
Author(s):  
Shigeru Ikeda ◽  
Minori Fubuki ◽  
Yoshiko K. Takahara ◽  
Michio Matsumura
Keyword(s):  
Photocatalytic Activity ◽  
Water Splitting ◽  
Overall Water Splitting

Cobalt layered double hydroxides derived CoP/Co2P hybrids for electrocatalytic overall water splitting

Nanoscale ◽  
2018 ◽  
Vol 10 (45) ◽  
pp. 21019-21024 ◽  
Author(s):  
Liyong Chen ◽  
Yingyue Zhang ◽  
Huifang Wang ◽  
Yanxin Wang ◽  
Dezhi Li ◽  
...  
Keyword(s):  
Water Splitting ◽  
Layered Double Hydroxides ◽  
Overall Water Splitting ◽  
Dual Functional ◽  
Double Hydroxides

Cobalt layered double hydroxides (Co-LDHs) obtained by an imidazole-assisted route were used as precursors to prepare dual-functional electrocatalysts CoP/Co2P for 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.

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