scholarly journals Efficient visible-light-driven photocatalytic hydrogen production over a direct Z-scheme system of TaON/Cd0.5Zn0.5S with a NiS cocatalyst

2020 ◽  
Vol 19 (1) ◽  
pp. 80-87 ◽  
Author(s):  
Tingting Wei ◽  
Zhanbin Jin ◽  
Fengyan Li ◽  
Dandan Yan ◽  
Lin Xu
Keyword(s):  
Quantum Yield ◽  
Hydrogen Production ◽  
Visible Light ◽  
Evolution Rate ◽  
Photocatalytic Hydrogen Production ◽  
Visible Light Driven

In this work, a study on the photocatalytic evolution of H2 showed that the direct Z-scheme T4-ZCS with 0.5 wt% NiS cocatalyst could reach the highest H2 evolution rate of 34.8 mmol h−1 g−1 with a quantum yield of about 25.5%.

Controlling the visible-light driven photocatalytic activity of alloyed ZnSe–AgInSe2 quantum dots for hydrogen production

2020 ◽  
Vol 8 (26) ◽  
pp. 13142-13149 ◽  
Author(s):  
Ping-Yen Hsieh ◽  
Tatsuya Kameyama ◽  
Takayuki Takiyama ◽  
Ko Masuoka ◽  
Takahisa Yamamoto ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Photocatalytic Activity ◽  
Quantum Yield ◽  
Hydrogen Production ◽  
Visible Light ◽  
Apparent Quantum Yield ◽  
Visible Light Driven

Alloyed ZnSe–AgInSe2 quantum dots were used as a photocatalyst for H2 production, showing an apparent quantum yield of 3.4% at 600 nm.

scholarly journals Concurrent photocatalytic hydrogen production and organic degradation by a composite catalyst film in a two-chamber photo-reactor

2013 ◽  
Vol 67 (12) ◽  
pp. 2845-2849 ◽  
Author(s):  
Xi Wang ◽  
Xiao-yan Li
Keyword(s):  
Hydrogen Production ◽  
Visible Light ◽  
Layer Structure ◽  
Energy Conversion Efficiency ◽  
Cathode Side ◽  
Composite Catalyst ◽  
Organic Degradation ◽  
Photocatalytic Hydrogen Production ◽  
Catalyst Film ◽  
Visible Light Driven

A novel visible light-driven photocatalyst film, MoS2/Ag/TiO2, was synthesized on a glass-fiber membrane. The composite catalyst film had a multi-layer structure with Ag as nanoconjunctions between the MoS2 and TiO2 layers. The catalyst film performed well for both photocatalytic hydrogen production and organic degradation in a two-chamber photo-reactor under either solar or visible light. Hydrogen was produced in the cathode side chamber while the model organic was decomposed in the anode side chamber. The specific hydrogen production rate went through a maximum of 85 mmol/m2-h with an energy conversion efficiency of 0.85%, while the maximum specific organic carbon removal for formic acid under solar light reached 1,520 mg/m2-h. It is apparent that Ag between the TiO2 and MoS2 layers allowed the transfer of photo-excited electrons via TiO2 → Ag → MoS2 for organic degradation and H+ reduction (e.g. hydrogen evolution) in two different chambers.

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