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Hybrid Carbon Dioxide Reduction Photocatalysts Consisting of Macrocyclic Cobalt(III) Complexes Deposited on Semiconductor Surfaces
Author(s) -
Huang Peipei,
Pantovich Sebastian A.,
Okolie Norbert O.,
Deskins N. Aaron,
Li Gonghu
Publication year - 2020
Publication title -
chemphotochem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.13
H-Index - 18
ISSN - 2367-0932
DOI - 10.1002/cptc.201900282
Subject(s) - semiconductor , cobalt , photocatalysis , carbon dioxide , carbon fibers , materials science , metal , chemistry , electrochemical reduction of carbon dioxide , visible spectrum , ligand (biochemistry) , density functional theory , hybrid material , chemical engineering , nanotechnology , photochemistry , inorganic chemistry , catalysis , optoelectronics , organic chemistry , composite material , carbon monoxide , computational chemistry , biochemistry , receptor , composite number , engineering
Hybrid photocatalysts can be prepared by coupling metal‐ligand complexes with light‐harvesting semiconductors. It is often challenging and time consuming to derivatize ligands with anchoring groups to effectively attach onto surfaces. In this study, we synthesized hybrid carbon dioxide reduction photocatalysts by directly depositing two macrocyclic Co(III) complexes on three different semiconductor surfaces (TiO 2 , N−Ta 2 O 5 and C 3 N 4 ). The resulting hybrid photocatalysts were characterized with various techniques and tested in CO 2 reduction reactions under different light conditions. Excellent visible‐light CO 2 ‐reduction activity was obtained using C 3 N 4 as the light‐harvesting semiconductor. Density functional theory calculations were conducted to help understand interactions between the cobalt complexes with a model TiO 2 surface.