Tuning of visible light-driven CO2 reduction and hydrogen evolution activity by using POSS-modified porous organometallic polymers

Significant efforts have been devoted to the photochemical CO2 reduction reaction (CO2RR) as a significant pathway for the development of renewable energy systems. However, the competitive hydrogen evolution reaction (HER) greatly impedes the fundamental understanding and industrial application of t...

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Published inJournal of materials chemistry. A, Materials for energy and sustainability Vol. 9; no. 31; pp. 16699 - 16705
Main Authors Wei-Jia, Wang, Kai-Hong, Chen, Zhi-Wen, Yang, Bo-Wen, Peng, Liang-Nian He
Format Journal Article
LanguageEnglish
Published Cambridge Royal Society of Chemistry 21.08.2021
Subjects
Carbon dioxide
Catalysts
Chemical reduction
Electron transfer
Hydrogen evolution reactions
Industrial applications
Organometallic polymers
Photochemical reactions
Photochemicals
Polyhedral oligomeric silsesquioxane
Polymers
Renewable energy
Surface area
Synthesis gas
Tuning
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Summary:Significant efforts have been devoted to the photochemical CO2 reduction reaction (CO2RR) as a significant pathway for the development of renewable energy systems. However, the competitive hydrogen evolution reaction (HER) greatly impedes the fundamental understanding and industrial application of the CO2RR. Herein, we report polyhedral oligomeric silsesquioxane (POSS)-based porous organometallic polymers (POMPs) that are able to catalyze the photochemical CO2RR to produce syngas. Their surface area, CO2 adsorption ability, visible-light harvesting capacity and photoinduced electron–hole separation efficiency can be regulated by tuning the Re-bipyridine content in POMPs. Consequently, the effects of these properties on CO2RR and HER activities have been investigated and the surface area and electron transfer efficiency of these materials have been elucidated as the key points. Importantly, we also reveal the applicability of the developed strategy in designing new catalysts for the CO2RR.
ISSN:2050-7488
2050-7496
DOI:10.1039/d1ta04418d