Well-Designed Spherical Covalent Organic Frameworks with an Electron-Deficient and Conjugate System for Efficient Photocatalytic Hydrogen Evolution

2021 ◽  
Author(s):  
Chunfeng Mao ◽  
Yingjie Hu ◽  
Chenghan Yang ◽  
Chaochao Qin ◽  
Guomeng Dong ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Covalent Organic Frameworks ◽  
Photocatalytic Hydrogen Evolution ◽  
Conjugate System

scholarly journals Sulfone-containing covalent organic frameworks for photocatalytic hydrogen evolution from water

2018 ◽  
Vol 10 (12) ◽  
pp. 1180-1189 ◽  
Author(s):  
Xiaoyan Wang ◽  
Linjiang Chen ◽  
Samantha Y. Chong ◽  
Marc A. Little ◽  
Yongzhen Wu ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Covalent Organic Frameworks ◽  
Photocatalytic Hydrogen Evolution

scholarly journals Rational design of isostructural 2D porphyrin-based covalent organic frameworks for tunable photocatalytic hydrogen evolution

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Rufan Chen ◽  
Yang Wang ◽  
Yuan Ma ◽  
Arindam Mal ◽  
Xiao-Ya Gao ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Rational Design ◽  
Hydrogen Generation ◽  
Structure Design ◽  
Molecular Engineering ◽  
Valuable Insight ◽  
Covalent Organic Frameworks ◽  
Structure Property ◽  
Photocatalytic Hydrogen Evolution ◽  
Photocatalytic Hydrogen Generation

AbstractCovalent organic frameworks have recently gained increasing attention in photocatalytic hydrogen generation from water. However, their structure-property-activity relationship, which should be beneficial for the structural design, is still far-away explored. Herein, we report the designed synthesis of four isostructural porphyrinic two-dimensional covalent organic frameworks (MPor-DETH-COF, M = H2, Co, Ni, Zn) and their photocatalytic activity in hydrogen generation. Our results clearly show that all four covalent organic frameworks adopt AA stacking structures, with high crystallinity and large surface area. Interestingly, the incorporation of different transition metals into the porphyrin rings can rationally tune the photocatalytic hydrogen evolution rate of corresponding covalent organic frameworks, with the order of CoPor-DETH-COF < H2Por-DETH-COF < NiPor-DETH-COF < ZnPor-DETH-COF. Based on the detailed experiments and calculations, this tunable performance can be mainly explained by their tailored charge-carrier dynamics via molecular engineering. This study not only represents a simple and effective way for efficient tuning of the photocatalytic hydrogen evolution activities of covalent organic frameworks at molecular level, but also provides valuable insight on the structure design of covalent organic frameworks for better photocatalysis.

Sulfur-doped covalent triazine-based frameworks for enhanced photocatalytic hydrogen evolution from water under visible light

2016 ◽  
Vol 4 (32) ◽  
pp. 12402-12406 ◽  
Author(s):  
Liuyi Li ◽  
Wei Fang ◽  
Peng Zhang ◽  
Jinhong Bi ◽  
Yunhui He ◽  
...  
Keyword(s):  
Visible Light ◽  
Hydrogen Evolution ◽  
Simple Approach ◽  
Covalent Organic Frameworks ◽  
Photocatalytic Hydrogen Evolution

Sulfur-doped covalent organic frameworks were synthesized via a simple approach for enhanced photocatalytic hydrogen evolution from water under visible light.

Effect of Different Functional Groups on Photocatalytic Hydrogen Evolution in Covalent‐Organic Frameworks

ChemCatChem ◽  
2019 ◽  
Vol 11 (9) ◽  
pp. 2313-2319 ◽  
Author(s):  
Jing‐Li Sheng ◽  
Hong Dong ◽  
Xiang‐Bin Meng ◽  
Hong‐Liang Tang ◽  
Yu‐Hao Yao ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Functional Groups ◽  
Covalent Organic Frameworks ◽  
Photocatalytic Hydrogen Evolution

scholarly journals Protonated imine‐linked covalent organic frameworks for photocatalytic hydrogen evolution

2021 ◽  
Author(s):  
Jin Yang ◽  
Amitava Acharjya ◽  
Meng-Yang Ye ◽  
Jabor Rabeah ◽  
Shuang Li ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Covalent Organic Frameworks ◽  
Photocatalytic Hydrogen Evolution ◽  
Protonated Imine
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