Grain boundary engineering in organic–inorganic hybrid semiconductor ZnS(en)0.5 for visible-light photocatalytic hydrogen production

2017 ◽  
Vol 5 (4) ◽  
pp. 1387-1393 ◽  
Author(s):  
Wenhui Feng ◽  
Zhibin Fang ◽  
Bo Wang ◽  
Lulu Zhang ◽  
Yan Zhang ◽  
...  

Unique grain boundary-rich organic–inorganic hybrid D-ZnS(en)0.5 nanosheets exhibit superior activity for photocatalytic H2 evolution under visible light irradiation.

2019 ◽  
Vol 9 (13) ◽  
pp. 2741 ◽  
Author(s):  
Vincenzo Vaiano ◽  
Giuseppina Iervolino

Cu-doped ZnO photocatalysts at different Cu loadings were prepared by a precipitation method. The presence of Cu in the ZnO crystal lattice led to significant enhancement in photocatalytic activity for H2 production from an aqueous glycerol solution under visible light irradiation. The best Cu loading was found to be 1.08 mol %, which allowed achieving hydrogen production equal to 2600 μmol/L with an aqueous glycerol solution at 5 wt % initial concentration, the photocatalyst dosage equal to 1.5 g/L, and at the spontaneous pH of the solution (pH = 6). The hydrogen production rate was increased to about 4770 μmol/L by increasing the initial glycerol concentration up to 10 wt %. The obtained results evidenced that the optimized Cu-doped ZnO could be considered a suitable visible-light-active photocatalyst to be used in photocatalytic hydrogen production without the presence of noble metals in sample formulation.


2014 ◽  
Vol 16 (5) ◽  
pp. 2728-2735 ◽  
Author(s):  
Qizhao Wang ◽  
Jiajia Li ◽  
Yan Bai ◽  
Juhong Lian ◽  
Haohao Huang ◽  
...  

A certain amount of Na2S2O3·5H2O solution added to the solution containing cadmium ions to form Cd/CdS photocatalysts could remove cadmium ions and produce hydrogen efficiently under visible light irradiation.


Nanoscale ◽  
2016 ◽  
Vol 8 (4) ◽  
pp. 2249-2259 ◽  
Author(s):  
Jiayi Qin ◽  
Jingpei Huo ◽  
Piyong Zhang ◽  
Jian Zeng ◽  
Tingting Wang ◽  
...  

Fluorescein-sensitized Ag/g-C3N4 nanocomposites have a remarkably enhanced photocatalytic activity for hydrogen production under visible light.


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