B-doped 3C-SiC nanowires with a finned microstructure for efficient visible light-driven photocatalytic hydrogen production

Nanoscale ◽  
2015 ◽  
Vol 7 (19) ◽  
pp. 8955-8961 ◽  
Author(s):  
Tao Yang ◽  
Xiwang Chang ◽  
Junhong Chen ◽  
Kuo-Chih Chou ◽  
Xinmei Hou
Keyword(s):  
Hydrogen Production ◽  
Visible Light ◽  
Band Gap ◽  
Photocatalytic Hydrogen Production ◽  
Single Crystalline ◽  
Sic Nanowires ◽  
Visible Light Driven ◽  
Crystalline Nature ◽  
Single Crystalline Nature

B-doped 3C-SiC nanowires with a finned microstructure have been synthesized. Due to the smaller band gap, the finned microstructure, and the single crystalline nature, the B-doped 3C-SiC nanowires demonstrate efficient activity as high as 108.4 μmol h−1g−1for H2production.

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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