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Cobalt Phosphide Cocatalysts Coated with Porous N‐doped Carbon Layers for Photocatalytic CO 2 Reduction
Author(s) -
Niu Pingping,
Pan Zhiming,
Wang Sibo,
Wang Xinchen
Publication year - 2021
Publication title -
chemcatchem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.497
H-Index - 106
eISSN - 1867-3899
pISSN - 1867-3880
DOI - 10.1002/cctc.202100748
Subject(s) - phosphide , photocatalysis , materials science , selectivity , cobalt , chemical engineering , nanoparticle , porosity , composite number , doping , nanotechnology , catalysis , chemistry , composite material , optoelectronics , organic chemistry , metallurgy , nickel , engineering
Cobalt phosphide (CoP) has been demonstrated as a cocatalyst for visible‐light‐sensitized CO 2 reduction, but just with moderate selectivity, due to the competitive H 2 generation reaction. Herein, the porous N‐doped carbon (NC) layer is in situ coated on the surface of CoP nanoparticles to fabricate the core‐shell CoP@NC composite cocatalyst. Benefiting from the outstanding electric conductivity and high surface area of the NC shell, the CoP@NC hybrid attains strengthened capabilities for charge separation/transfer and CO 2 capture/activation. Besides, the direct contact of CoP with H 2 O is prevented by the porous NC shell with high hydrophobicity. Consequently, the photosensitized CO 2 ‐to‐CO conversion efficiency and selectivity of CoP@NC hybrid are enhanced by 2.7 and 2.4 times, respectively, compared to bare CoP.