scholarly journals Extended conjugated microporous polymers for photocatalytic hydrogen evolution from water

2016 ◽  
Vol 52 (65) ◽  
pp. 10008-10011 ◽  
Author(s):  
Reiner Sebastian Sprick ◽  
Baltasar Bonillo ◽  
Michael Sachs ◽  
Rob Clowes ◽  
James R. Durrant ◽  
...  
Keyword(s):  
Hydrogen Production ◽  
Hydrogen Evolution ◽  
Electron Donor ◽  
Photocatalytic Hydrogen Evolution ◽  
Microporous Polymers ◽  
Conjugated Microporous Polymers

Conjugated microporous polymers (CMPs) have been used as photocatalysts for hydrogen production from water in the presence of a sacrificial electron donor.

Pyrene-containing conjugated organic microporous polymers for photocatalytic hydrogen evolution from water

2021 ◽  
Author(s):  
Mohamed Gamal Mohamed ◽  
Mohamed Hammad Elsayed ◽  
Ahmed M. Elewa ◽  
Ahmed F. M. EL-Mahdy ◽  
Cheng-Han Yang ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
High Stability ◽  
Photocatalytic Hydrogen Evolution ◽  
Microporous Polymers ◽  
Very High ◽  
Conjugated Microporous Polymers ◽  
Production Efficiencies

Pyrene based conjugated microporous polymers (CMPs) as photocatalysts with promising H2 production efficiencies and very high stability.

Substituent effect of conjugated microporous polymers on the photocatalytic hydrogen evolution activity

2020 ◽  
Vol 8 (5) ◽  
pp. 2404-2411 ◽  
Author(s):  
Xiaomin Gao ◽  
Chang Shu ◽  
Chong Zhang ◽  
Wenyan Ma ◽  
Shi-Bin Ren ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Hydrogen Evolution ◽  
Substituent Effect ◽  
Evolution Rate ◽  
Photocatalytic Hydrogen Evolution ◽  
Microporous Polymers ◽  
Hydrogen Evolution Rate ◽  
Conjugated Microporous Polymers

The influence of substituent groups on the photocatalytic activity of conjugated microporous polymers was investigated, and a high photocatalytic hydrogen evolution rate of 18.93 mmol h−1 g−1 was achieved by PyDF with fluorine atoms.

Photocatalytic Hydrogen Evolution from Water Using Heterocyclic Conjugated Microporous Polymers: Porous or Non-Porous?

2018 ◽  
Author(s):  
Reiner Sebastian Sprick ◽  
Yang Bai ◽  
Catherine M. Aitchison ◽  
Duncan J. Woods ◽  
Andrew I. Cooper
Keyword(s):  
Hydrogen Evolution ◽  
External Quantum Efficiency ◽  
Structural Analog ◽  
Linear Polymers ◽  
Porous Network ◽  
Photocatalytic Hydrogen Evolution ◽  
Microporous Polymers ◽  
Porous Networks ◽  
Hole Scavenger ◽  
Conjugated Microporous Polymers

<p>Three series of conjugated microporous polymers (CMPs) were studied as photocatalysts for producing hydrogen from water using a sacrificial hole-scavenger. In all cases, dibenzo[<i>b</i>,<i>d</i>]thiophene sulfone polymers outperformed their fluorene analogs. A porous network, S-CMP3, showed the highest hydrogen evolution rate of 6076 µmol h<sup>-1</sup> g<sup>-1</sup> (λ > 295 nm) and 3106 µmol h<sup>-1</sup> g<sup>-1</sup> (λ > 420 nm), with an external quantum efficiency of 13.2% at 420 nm. S-CMP3 outperforms its linear structural analog, P35, while in other cases, non-porous linear polymers are superior to equivalent porous networks. This suggests that microporosity can be beneficial for sacrificial photocatalytic hydrogen evolution, but not for all monomer combinations.</p>

Perylene-Containing Conjugated Microporous Polymers for Photocatalytic Hydrogen Evolution

2017 ◽  
Vol 218 (14) ◽  
pp. 1700049 ◽  
Author(s):  
Yunfeng Xu ◽  
Na Mao ◽  
Shi Feng ◽  
Chong Zhang ◽  
Feng Wang ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Photocatalytic Hydrogen Evolution ◽  
Microporous Polymers ◽  
Conjugated Microporous Polymers

Tetra-armed conjugated microporous polymers for gas adsorption and photocatalytic hydrogen evolution

2017 ◽  
Vol 60 (8) ◽  
pp. 1075-1083 ◽  
Author(s):  
Yunfeng Xu ◽  
Chong Zhang ◽  
Pan Mu ◽  
Na Mao ◽  
Xue Wang ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Gas Adsorption ◽  
Photocatalytic Hydrogen Evolution ◽  
Microporous Polymers ◽  
Conjugated Microporous Polymers

Regulating Charge‐Transfer in Conjugated Microporous Polymers for Photocatalytic Hydrogen Evolution

2019 ◽  
Vol 25 (15) ◽  
pp. 3867-3874 ◽  
Author(s):  
Venkata Suresh Mothika ◽  
Papri Sutar ◽  
Parul Verma ◽  
Shubhajit Das ◽  
Swapan K. Pati ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Hydrogen Evolution ◽  
Photocatalytic Hydrogen Evolution ◽  
Microporous Polymers ◽  
Conjugated Microporous Polymers

scholarly journals Enhancing Charge Separation in Conjugated Microporous Polymers for Efficient Photocatalytic Hydrogen Evolution

2021 ◽  
Author(s):  
Zhuangfei Qian ◽  
Yajie Yan ◽  
Ziqi Liang ◽  
Xiaodong Zhuang ◽  
Kai A. I. Zhang
Keyword(s):  
Hydrogen Evolution ◽  
Organic Semiconductor ◽  
Charge Separation ◽  
High Efficiency ◽  
Photogenerated Electron ◽  
Limiting Factors ◽  
Electron Hole ◽  
Photocatalytic Hydrogen Evolution ◽  
Microporous Polymers ◽  
Conjugated Microporous Polymers

The fast recombination of photogenerated electron-hole pairs after charge separation is one of the main limiting factors for achieving high efficiency of organic semiconductor photocatalysts. Herein, we report a conjugated...

Photocatalytic Hydrogen Evolution from Water Using Heterocyclic Conjugated Microporous Polymers: Porous or Non-Porous?

2018 ◽  
Author(s):  
Reiner Sebastian Sprick ◽  
Yang Bai ◽  
Catherine M. Aitchison ◽  
Duncan J. Woods ◽  
Andrew I. Cooper
Keyword(s):  
Hydrogen Evolution ◽  
External Quantum Efficiency ◽  
Structural Analog ◽  
Linear Polymers ◽  
Porous Network ◽  
Photocatalytic Hydrogen Evolution ◽  
Microporous Polymers ◽  
Porous Networks ◽  
Hole Scavenger ◽  
Conjugated Microporous Polymers

<p>Three series of conjugated microporous polymers (CMPs) were studied as photocatalysts for producing hydrogen from water using a sacrificial hole-scavenger. In all cases, dibenzo[<i>b</i>,<i>d</i>]thiophene sulfone polymers outperformed their fluorene analogs. A porous network, S-CMP3, showed the highest hydrogen evolution rate of 6076 µmol h<sup>-1</sup> g<sup>-1</sup> (λ > 295 nm) and 3106 µmol h<sup>-1</sup> g<sup>-1</sup> (λ > 420 nm), with an external quantum efficiency of 13.2% at 420 nm. S-CMP3 outperforms its linear structural analog, P35, while in other cases, non-porous linear polymers are superior to equivalent porous networks. This suggests that microporosity can be beneficial for sacrificial photocatalytic hydrogen evolution, but not for all monomer combinations.</p>

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