Highly dispersed Ru nanoparticles on a bipyridine-linked covalent organic framework for efficient photocatalytic CO2 reduction. Issue 11 (27th April 2021)

• Record Type: Journal Article
• Authors: Liu, Ziling; Huang, Yaqi; Chang, Shuqing; Zhu, Xiaoli; Fu, Yanghe; Ma, Rui; Lu, Xinqing; Zhang, Fumin; Zhu, Weidong; Fan, Maohong
• Is Part Of: Sustainable energy & fuels. Volume 5:Issue 11(2021)
• Page Start: 2871
• Page End: 2876
• Publication Date: 2021-04-27
• Subjects: Renewable energy sources -- Periodicals; Fuel cells -- Periodicals; Electric batteries -- Periodicals; Electrochemistry -- Periodicals; 660.297
• DOI: 10.1039/d1se00358e
• Languages: English
• ISSNs: 2398-4902

Abstract

Abstract : Highly dispersed Ru nanoparticles are confined in a photosensitizing bipyridine-linked covalent organic framework to construct Ru@TpBpy composites, exhibiting significantly enhanced activities for CO2 reduction under visible-light irradiation. Abstract : The visible-light driven photocatalytic conversion of CO2 into valuable hydrocarbons is a highly attractive approach for sustainable carbon cycle to solve the worldwide environmental and energy problems. Herein, highly dispersed Ru nanoparticles (NPs) are confined in a photosensitizing bipyridine-linked covalent organic framework (TpBpy) to facilely construct Ru@TpBpy composites. The resulting Ru@TpBpy catalysts exhibit significantly enhanced activities for CO2 reduction under visible-light irradiation, giving the maximum HCOOH production rate of 172 μmol gcat −1 h −1 over 0.7 wt% Ru@TpBpy. The interactions between Ru NPs and TpBpy can not only enhance the visible-light harvesting, but also restrain the recombination of photo-generated charges efficiently and facilitate the electron transfer through Ru NPs, thereby improving the photocatalytic performance for CO2 reduction. The current work provides a promising pathway to construct efficient photocatalysts with highly dispersed metallic NPs confined into photosensitizing COFs via utilizing the coordination microenvironments and also expands the application of COF-based materials.