TiO2/graphene-based nanocomposites for water treatment: A brief overview of charge carrier transfer, antimicrobial and photocatalytic performance

2019 ◽  
Vol 253 ◽  
pp. 179-186 ◽  
Author(s):  
Ewelina Kusiak-Nejman ◽  
Antoni W. Morawski
Keyword(s):  
Water Treatment ◽  
Charge Carrier ◽  
Photocatalytic Performance ◽  
Carrier Transfer

scholarly journals In situ structural modification of graphitic carbon nitride by alkali halides and influence on photocatalytic activity

RSC Advances ◽  
2017 ◽  
Vol 7 (52) ◽  
pp. 32592-32600 ◽  
Author(s):  
Yan Xu ◽  
Yinyan Gong ◽  
Hui Ren ◽  
Wenbo Liu ◽  
Lengyuan Niu ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Charge Carrier ◽  
Basal Plane ◽  
Carbon Nitride ◽  
Structural Modification ◽  
Photocatalytic Performance ◽  
Alkali Halides ◽  
Thermal Condensation ◽  
Carrier Transfer

Introducing alkali halides during thermal condensation of melamine disturbs periodic ordering in the basal plane, reduces the band gap, and facilitates charge carrier transfer and separation, and thus enhances the photocatalytic performance of g-C3N4.

Double defects modified carbon nitride nanosheets with enhanced photocatalytic hydrogen evolution

2018 ◽  
Vol 20 (25) ◽  
pp. 17471-17476 ◽  
Author(s):  
Guilan Xu ◽  
Jianchen Shen ◽  
Shumei Chen ◽  
Yujie Gao ◽  
Huabin Zhang ◽  
...  
Keyword(s):  
Charge Carrier ◽  
Hydrogen Evolution ◽  
Light Absorption ◽  
Carbon Nitride ◽  
Photocatalytic Performance ◽  
Photocatalytic Hydrogen Evolution ◽  
Carrier Transfer ◽  
Carbon Nitride Nanosheets

g-C3N4-based photocatalysts with double defects extend light absorption and promote charge carrier transfer and separation, significantly improving photocatalytic performance.

scholarly journals Deciphering the role of quantum dot size in the ultrafast charge carrier dynamics at the perovskite–quantum dot interface

2020 ◽  
Vol 8 (42) ◽  
pp. 14834-14844
Author(s):  
Piotr Piatkowski ◽  
Sofia Masi ◽  
Pavel Galar ◽  
Mario Gutiérrez ◽  
Thi Tuyen Ngo ◽  
...  
Keyword(s):  
Quantum Dot ◽  
Charge Carrier ◽  
Rate Constants ◽  
Transient Absorption ◽  
Carrier Dynamics ◽  
Carrier Transfer ◽  
Charge Carrier Dynamics ◽  
Conduction Bands

Charge-carrier transfer (CT) from the perovskite host to PbS QDs were studied using fs-transient absorption and THz techniques. The CT rate constants increase with the size of QDs due to a change in the position of valence and conduction bands in PbS QDs.

CeO2 Nanocrystal Decorated TiO2 Nanobelt with Enhanced Photocatalytic Performance

2021 ◽  
Vol 21 (4) ◽  
pp. 2647-2652
Author(s):  
Yanchen Ji ◽  
Guoxin Song ◽  
Ruiqi Yang ◽  
Longhua Ding ◽  
Aizhu Wang ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Water Treatment ◽  
Light Absorption ◽  
High Performance ◽  
Photocatalytic Performance ◽  
Synthesis Method ◽  
Charge Carriers ◽  
Controllable Synthesis ◽  
Visible Light Absorption ◽  
Potential Applications

In this work, CeO2 nanocrystal-decorated TiO2 nanobelt for forming a CeO2@TiO2 heterostructure. CeO2 plays a dual role in improving photocatalytic activity, not only by promoting the separation and transfer of photogenerated charge carriers, but also by increasing visible light absorption of the photocatalyst as a photosensitizer. The as-prepared CeO2@TiO2 heterostructure demonstrates the performance of organic degradation and H2 production (about 17 μmol/h/g, which is about 2.5 times higher than that of pure TiO2 nanobelts). Our work provides a facile and controllable synthesis method for high performance photocatalyst, which will have potential applications in synthesis clean/solar fuel, and photocatalytic water treatment.

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