Charge carrier separation in nanostructured TiO2 photoelectrodes for water splitting

2013 ◽  
Vol 15 (22) ◽  
pp. 8772 ◽  
Author(s):  
Alexander J. Cowan ◽  
Wenhua Leng ◽  
Piers R. F. Barnes ◽  
David R. Klug ◽  
James R. Durrant
Keyword(s):  
Charge Carrier ◽  
Water Splitting ◽  
Nanostructured Tio2 ◽  
Carrier Separation

Experimental and first-principles studies of BiVO4/BiV1-xMnxO4-y n-n+ homojunction for efficient charge carrier separation in sunlight induced water splitting

2018 ◽  
Vol 43 (33) ◽  
pp. 15815-15822 ◽  
Author(s):  
Anupam Srivastav ◽  
Pawan Kumar ◽  
Anuradha Verma ◽  
York R. Smith ◽  
Vibha Rani Satsangi ◽  
...  
Keyword(s):  
Charge Carrier ◽  
Water Splitting ◽  
First Principles ◽  
Efficient Charge ◽  
Carrier Separation

Synchronization of charge carrier separation by tailoring the interface of Si–Au–TiO2 heterostructures via click chemistry for PEC water splitting

2016 ◽  
Vol 154 ◽  
pp. 150-169 ◽  
Author(s):  
Dilip Kumar Behara ◽  
Gyan Prakash Sharma ◽  
Arun Prakash Upadhyay ◽  
Maurya Gyanprakash ◽  
Raj Ganesh S Pala ◽  
...  
Keyword(s):  
Charge Carrier ◽  
Click Chemistry ◽  
Water Splitting ◽  
Carrier Separation ◽  
Pec Water Splitting

In situ textured carbon nitride photoanodes with enhanced photoelectrochemical activity by band-gap state modulation

2020 ◽  
Vol 8 (45) ◽  
pp. 24005-24012
Author(s):  
Miaoyan Huang ◽  
Haipeng Wang ◽  
Wan Li ◽  
Yan-Ling Zhao ◽  
Rui-Qin Zhang
Keyword(s):  
Charge Carrier ◽  
Band Gap ◽  
Water Splitting ◽  
Carbon Nitride ◽  
Photoelectrochemical Water Splitting ◽  
Photoelectrochemical Activity ◽  
Carrier Separation ◽  
Gap State

As promising photoelectrodes in photoelectrochemical water splitting cells, the photoelectrochemical activity of oxygen-doped CN films can be enhanced by a band-gap state modulation strategy to effectively improve the charge carrier separation.

Effect of aspect ratios of rutile TiO2 nanorods on overall photocatalytic water splitting performance

Nanoscale ◽  
2020 ◽  
Vol 12 (8) ◽  
pp. 4895-4902 ◽  
Author(s):  
Bing Fu ◽  
Zhijiao Wu ◽  
Shuang Cao ◽  
Kai Guo ◽  
Lingyu Piao
Keyword(s):  
Charge Carrier ◽  
Water Splitting ◽  
Oxidation Reaction ◽  
Spatial Separation ◽  
Tio2 Nanorods ◽  
Photocatalytic Water Splitting ◽  
Aspect Ratios ◽  
Efficient Charge ◽  
Reduction And Oxidation ◽  
Carrier Separation

The spatial separation of reduction and oxidation reaction sites on the different facets of a semiconductor is an ideal and promising route for the overall photocatalytic water splitting due to efficient charge carrier separation.

Titania Coated Hematite Nanostructures for Solar Water Splitting Applications

Nano LIFE ◽  
2016 ◽  
Vol 06 (02) ◽  
pp. 1650008 ◽  
Author(s):  
Timur Sh. Atabaev ◽  
Sanjar Atabaev
Keyword(s):  
Charge Carrier ◽  
Water Splitting ◽  
Light Harvesting ◽  
Photoelectrochemical Water Splitting ◽  
Photoelectrochemical Activity ◽  
Solar Water ◽  
Analysis Techniques ◽  
Solar Water Splitting ◽  
Titania Layer ◽  
Carrier Separation

In this study, we report the successful preparation of hematite nanostructures coated with thin titania layer for potential solar water splitting applications. The prepared samples were studied systematically by a range of analysis techniques. We showed that resulting hybrid hematite-titania nanosystem exhibited improved photoelectrochemical activity for solar water splitting compared to the bare hematite only. We also showed that this enhancement was achieved through an improvement in light harvesting and better charge carrier separation. Thus, these findings may open new perspectives for the development of photoelectrodes used in photoelectrochemical water splitting applications.

Designing C6N6/C2N van der Waals heterostructures for photogenerated charge carrier separation

2021 ◽  
Vol 23 (6) ◽  
pp. 3925-3933
Author(s):  
Moumita Mukherjee ◽  
Rajkumar Jana ◽  
Ayan Datta
Keyword(s):  
Charge Transfer ◽  
Charge Carrier ◽  
Water Splitting ◽  
Van Der Waals ◽  
Two Dimensional ◽  
Photogenerated Charge Carrier ◽  
Van Der Waals Heterostructure ◽  
Carrier Separation ◽  
Work Function Difference ◽  
Function Difference

A new two-dimensional C6N6/C2N van der Waals heterostructure is proposed to realize photocatalytic water splitting. The work function difference promotes charge transfer from the C2N to C6N6 layer.

Copper-Graphene-TiO2 Hybrid Materials for Photocatalytically Assisted H2 Generation

2020 ◽  
Author(s):  
David Maria Tobaldi ◽  
Kamila Koci ◽  
Miroslava Edelmannova ◽  
Luc Lajaunie ◽  
Bruno Figueiredo ◽  
...  
Keyword(s):  
Titanium Dioxide ◽  
Charge Carrier ◽  
Visible Light ◽  
Water Splitting ◽  
Hydrogen Generation ◽  
Fold Increase ◽  
Photocatalytic Water Splitting ◽  
Photocatalytic Hydrogen Generation ◽  
Spatial Charge ◽  
Carrier Separation

<p>Hydrogen, as energy carrier, is a zero-emission fuel. Being green and clean, it is considered to play an important role in energy and environmental issues. Photocatalytic water splitting is a process used to generate hydrogen from the dissociation of water. Titanium dioxide is still the archetype material for photocatalytic water splitting. However, because of the fast recombination of the photo-generated exciton, the yield of the reaction is typically low. In this work, we have modified the surface of titanium dioxide with copper and copper/graphene to sensitise it to visible light, and to increase the spatial charge carrier separation, thus extending the quantum yield of H<sub>2</sub> production from methanol/water mixtures. Results showed that, in the analysed system, exists an optimum amount of copper plus graphene (<i>i.e.</i> 0.5 mol% copper plus 0.5 wt% graphene) to grant a two-fold increase in the photocatalytic hydrogen generation compared to that of bare titania. That system proved itself to be complex and dynamic. This was attributed to the increased spatial charge carrier separation exploited by graphene (under 365 and 405 nm irradiation), and to the continuous reduction of Cu(II) to Cu(I) due to IFCT that has proven to be an excellent visible-light sensitiser in the copper/graphene-titania system.</p><p>Hybrid titania-copper-graphene materials could therefore be exploited in the field of light-to-energy applications.</p>

Effects of La-doping on charge separation behavior of ZnO:GaN for its enhanced photocatalytic performance

2016 ◽  
Vol 6 (4) ◽  
pp. 1033-1041 ◽  
Author(s):  
Yansong Zhou ◽  
Gang Chen ◽  
Yaoguang Yu ◽  
Lichen Zhao ◽  
Qilin Yu ◽  
...  
Keyword(s):  
Solid Solution ◽  
Charge Carrier ◽  
Space Charge ◽  
Water Splitting ◽  
Charge Separation ◽  
Photocatalytic Performance ◽  
Photogenerated Charge Carrier ◽  
Charge Layer ◽  
Carrier Separation ◽  
Separation Behavior

In this work, lanthanum (La) has been proven as an effective space charge layer modifier to promote efficient photogenerated charge carrier separation for ZnO:GaN solid solution photocatalysts with enhanced photocatalytic water-splitting performance.

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