Double heterojunction nanowire photocatalysts for hydrogen generation

Nanoscale ◽  
2014 ◽  
Vol 6 (8) ◽  
pp. 4117-4124 ◽  
Author(s):  
P. Tongying ◽  
F. Vietmeyer ◽  
D. Aleksiuk ◽  
G. J. Ferraudi ◽  
G. Krylova ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Solar Energy ◽  
Energy Conversion ◽  
Charge Separation ◽  
Hydrogen Generation ◽  
Solar Energy Conversion ◽  
Double Heterojunction ◽  
Key Aspects

Charge separation and charge transfer across interfaces are key aspects in the design of efficient photocatalysts for solar energy conversion.

Photoinduced Charge Transfer and Efficient Solar Energy Conversion in a Blend of a Red Polyfluorene Copolymer with CdSe Nanoparticles

Nano Letters ◽  
2006 ◽  
Vol 6 (8) ◽  
pp. 1789-1793 ◽  
Author(s):  
Peng Wang ◽  
Agnese Abrusci ◽  
Henry M. P. Wong ◽  
Mattias Svensson ◽  
Mats R. Andersson ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Solar Energy ◽  
Energy Conversion ◽  
Solar Energy Conversion ◽  
Cdse Nanoparticles ◽  
Photoinduced Charge Transfer ◽  
Photoinduced Charge

Spatial distribution of active sites on a ferroelectric PbTiO3 photocatalyst for photocatalytic hydrogen production

2017 ◽  
Vol 198 ◽  
pp. 463-472 ◽  
Author(s):  
Rengui Li ◽  
Yue Zhao ◽  
Can Li
Keyword(s):  
Spatial Distribution ◽  
Hydrogen Production ◽  
Solar Energy ◽  
Energy Conversion ◽  
Electric Fields ◽  
Charge Separation ◽  
Active Sites ◽  
Solar Energy Conversion ◽  
Photogenerated Electrons ◽  
The Right

The separation of photogenerated charge carries is a challenging issue in artificial photocatalyst systems for solar energy conversion. It has been reported that spatial charge separation can take place between different facets of semiconductor-based crystals with regular morphology and facets, which could be used to rationally deposit cocatalysts on the right facets. However, the spatial separation of photogenerated electrons and holes is still a big challenge for a particulate photocatalyst without regular morphology and specific facets. In this work, we demonstrated that photogenerated electrons and holes can be regularly separated on ferroelectric PbTiO3 photocatalyst even without regular morphology and facets. The reduction cocatalyst and oxidation cocatalyst could be selectively formed on different sites via an in situ photochemical deposition method. It is found that the photoactivity and hydrogen production for PbTiO3 with spatially separated dual-cocatalysts is remarkably enhanced to more than 100 times greater compared to native PbTiO3, which is much higher than that the case of dual-cocatalysts with a random distribution. The intrinsic electric fields and spontaneous electric polarization in the bulk of PbTiO3 are proposed to play important roles in the spatial distribution of active sites on irregular PbTiO3 particles. Our work emphasizes the essential roles of two important factors, efficient charge separation strategy and the location of dual-cocatalysts on the right sites, to construct integrated artificial photocatalyst systems for solar energy conversion.

Novel porphyrin-preparation, characterization, and applications in solar energy conversion

2016 ◽  
Vol 18 (9) ◽  
pp. 6885-6892 ◽  
Author(s):  
Jianfeng Lu ◽  
Hao Li ◽  
Shuangshuang Liu ◽  
Yu-Cheng Chang ◽  
Hui-Ping Wu ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Solar Energy ◽  
Energy Conversion ◽  
Conversion Efficiency ◽  
Light Harvesting ◽  
Solar Energy Conversion

Accelerated inner charge transfer in porphyrins promotes a broad light-harvesting ability up to 840 nm and a conversion efficiency of 9.2%.

scholarly journals Ultrafast Dynamics of Charge Transfer and Photochemical Reactions in Solar Energy Conversion

2018 ◽  
Vol 5 (12) ◽  
pp. 1800221 ◽  
Author(s):  
Jing-Yin Xu ◽  
Xin Tong ◽  
Peng Yu ◽  
Gideon Evans Wenya ◽  
Thomas McGrath ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Solar Energy ◽  
Energy Conversion ◽  
Solar Energy Conversion ◽  
Photochemical Reactions ◽  
Ultrafast Dynamics
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