Band-gap engineering of layered covalent organic frameworks via controllable exfoliation for enhanced visible-light-driven hydrogen evolution

2020 ◽  
Vol 45 (4) ◽  
pp. 2689-2698 ◽  
Author(s):  
Lin Li ◽  
Yuanzhi Zhu ◽  
Ning Gong ◽  
Wen Zhang ◽  
Wenchao Peng ◽  
...  
Keyword(s):  
Visible Light ◽  
Band Gap ◽  
Hydrogen Evolution ◽  
Covalent Organic Frameworks ◽  
Band Gap Engineering ◽  
Visible Light Driven

Crystal defect-mediated band-gap engineering: a new strategy for tuning the optical properties of Ag2Se quantum dots toward enhanced hydrogen evolution performance

2015 ◽  
Vol 3 (40) ◽  
pp. 20051-20055 ◽  
Author(s):  
Qi Cao ◽  
Yi-Feng Cheng ◽  
Han Bi ◽  
Xuebing Zhao ◽  
Kaiping Yuan ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Optical Properties ◽  
Visible Light ◽  
Band Gap ◽  
Hydrogen Evolution ◽  
High Performance ◽  
Crystal Defect ◽  
Band Gap Engineering ◽  
New Strategy ◽  
Visible Light Driven

Defect-rich Ag2Se QDs were prepared controllably for sensitizing TiO2 toward high-performance visible-light-driven hydrogen-evolution photocatalysts.

Construction of a novel 2D-2D heterojunction by coupling covalent organic framework and In2S3 for photocatalytic removal of organic pollutants with high efficiency

2021 ◽  
Author(s):  
Luqiu Li ◽  
Dongguang Yin ◽  
Xiandi Guo
Keyword(s):  
Visible Light ◽  
Hydrogen Evolution ◽  
Organic Pollutants ◽  
High Efficiency ◽  
Crystalline Material ◽  
Charge Carriers ◽  
Covalent Organic Frameworks ◽  
Covalent Organic Framework ◽  
Photocatalytic Removal ◽  
Visible Light Driven

Covalent organic frameworks (COFs) representing an emerging class of porous crystalline material have shown promising visible-light-driven hydrogen evolution activity. However, they have a high recombination ratio of charge carriers and...

Boosting photocatalytic H2 evolution on g-C3N4 by modifying covalent organic frameworks (COFs)

2019 ◽  
Vol 55 (41) ◽  
pp. 5829-5832 ◽  
Author(s):  
Maolan Luo ◽  
Qing Yang ◽  
Kewei Liu ◽  
Hongmei Cao ◽  
Hongjian Yan
Keyword(s):  
Visible Light ◽  
Hydrogen Evolution ◽  
Quantum Efficiency ◽  
Covalent Organic Frameworks ◽  
H2 Evolution ◽  
Co Catalyst ◽  
Visible Light Driven ◽  
Apparent Quantum Efficiency ◽  
Sacrificial Agent ◽  
Photocatalytic H2 Evolution

Modifying g-C3N4 with covalent organic frameworks (COFs) through imine linkage results in a dramatically enhanced visible-light-driven photocatalytic hydrogen evolution, which reached 10.1 mmol g−1 h−1 when 2 wt% Pt and triethanolamine were used as co-catalyst and sacrificial agent, respectively, corresponding to an apparent quantum efficiency (AQE) of 20.7% at 425 nm.

Cobalt-containing covalent organic frameworks for visible light-driven hydrogen evolution

2019 ◽  
Vol 63 (2) ◽  
pp. 192-197 ◽  
Author(s):  
Jian Wang ◽  
Jian Zhang ◽  
Shing Bo Peh ◽  
Guoliang Liu ◽  
Tanay Kundu ◽  
...  
Keyword(s):  
Visible Light ◽  
Hydrogen Evolution ◽  
Covalent Organic Frameworks ◽  
Visible Light Driven

Band gap engineering design for construction of energy-levels well-matched semiconductor heterojunction with enhanced visible-light-driven photocatalytic activity

RSC Advances ◽  
2014 ◽  
Vol 4 (78) ◽  
pp. 41219-41227 ◽  
Author(s):  
Hongwei Huang ◽  
Shuobo Wang ◽  
Yihe Zhang ◽  
Paul K. Chu
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
Band Gap ◽  
Engineering Design ◽  
Energy Levels ◽  
Band Gap Engineering ◽  
Photocurrent Generation ◽  
Visible Light Driven

Energy-levels well-matched Mg1−xCuxWO4/Bi2WO6 heterojunction was constructed based on band gap engineering. It exhibits high visible-light photoactivity for RhB degradation and photocurrent generation.

g-C3N4/Bi4O5I2 2D–2D heterojunctional nanosheets with enhanced visible-light photocatalytic activity

RSC Advances ◽  
2016 ◽  
Vol 6 (13) ◽  
pp. 10895-10903 ◽  
Author(s):  
Na Tian ◽  
Yihe Zhang ◽  
Chengyin Liu ◽  
Shixin Yu ◽  
Min Li ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
Band Gap ◽  
Engineering Design ◽  
Band Gap Engineering ◽  
No Removal ◽  
Visible Light Photocatalytic Activity ◽  
Visible Light Driven ◽  
Visible Light Photocatalytic

The 2D–2D heterojunctional g-C3N4/Bi4O5I2 nanosheets were successfully constructed based on band gap engineering design. It exhibits high visible-light-driven photocatalytic activity for degradation of RhB and NO removal.

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