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Published on: October 5, 2019
Pathways towards Boosting Solar-Driven Hydrogen Evolution of Conjugated Polymers.
Yaoyao Liu1, Bingjie Li2, Zhonghua Xiang1
1State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing, 100029, P. R. China.
Conjugated polymers (CPs) show great promise for green hydrogen production via photocatalytic water splitting. This review details strategies to enhance their efficiency, boosting solar-driven hydrogen evolution.
Area of Science:
- Materials Science
- Renewable Energy
- Photocatalysis
Background:
- Solar-driven hydrogen evolution is a key technology for green energy.
- Developing efficient photocatalysts for water splitting remains a challenge.
- Conjugated polymers (CPs) offer promising properties for solar hydrogen production.
Purpose of the Study:
- To systematically review strategies for enhancing photocatalytic hydrogen evolution (PHE) using CPs.
- To summarize methods that improve the efficiency of CP-based photocatalysts.
- To provide perspectives on future developments in CP-based PHE.
Main Methods:
- Enhancing visible light absorption in CPs.
- Suppressing electron-hole pair recombination.
- Boosting surface catalytic reactions on CPs.
- Methods include copolymerization, donor-acceptor structures, heterojunctions, and cocatalyst loading.
Main Results:
- Apparent quantum yields for CP-based PHE have increased significantly, from <1% to >20% in five years.
- Various strategies effectively improve the performance of CPs for hydrogen production.
- Eleven specific methods are discussed for boosting PHE.
Conclusions:
- CPs are versatile materials for efficient solar-driven hydrogen production.
- Strategic modifications can dramatically enhance their photocatalytic activity.
- Further research holds promise for advancing CP-based green energy technologies.
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