Issue 37, 2018

Improving the photocatalytic reduction of CO2 to CO for TiO2 hollow spheres through hybridization with a cobalt complex

Abstract

A chemical system with enhanced efficiency for electron generation and transfer was constructed by the integration of TiO2 hollow spheres with [Co(bipy)3]2+. The introduction of [Co(bipy)3]2+ remarkably enhances the photocatalytic activity of pristine semiconductor photocatalysts for heterogeneous CO2 conversion, which is attributable to the acceleration of charge separation. Of particular interest is that the excellent photocatalytic activity of the heterogeneous catalysts can be utilised for a universal photocatalytic CO2 reduction system. Yields of 16.8 μmol CO and 6.6 μmol H2 can be obtained after 2 h of the photoredox reaction, and the apparent overall quantum yield was estimated to be 0.66% under irradiation at λ = 365 nm. The present findings clearly demonstrate that the integration of electron mediators with semiconductors is a feasible process for the design and development of efficient photochemical systems for CO2 conversion.

Graphical abstract: Improving the photocatalytic reduction of CO2 to CO for TiO2 hollow spheres through hybridization with a cobalt complex

Supplementary files

Article information

Article type
Paper
Submitted
14 Apr 2018
Accepted
23 Mai 2018
First published
05 Jun 2018
This article is Open Access
Creative Commons BY license

RSC Adv., 2018,8, 20543-20548

Improving the photocatalytic reduction of CO2 to CO for TiO2 hollow spheres through hybridization with a cobalt complex

J. Lin, X. Sun, B. Qin and T. Yu, RSC Adv., 2018, 8, 20543 DOI: 10.1039/C8RA03211D

This article is licensed under a Creative Commons Attribution 3.0 Unported Licence. You can use material from this article in other publications without requesting further permissions from the RSC, provided that the correct acknowledgement is given.

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