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Carbon Nitride Grafted Cobalt Complex (Co@npg‐C 3 N 4 ) for Visible Light−Assisted Esterification of Aldehydes
Author(s) -
Kumar Anurag,
Kumar Pawan,
Pathak Abhishek Kumar,
Chokkapu Appala Naidu,
Jain Suman L.
Publication year - 2017
Publication title -
chemistryselect
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 34
ISSN - 2365-6549
DOI - 10.1002/slct.201602031
Subject(s) - cobalt , carbon nitride , graphitic carbon nitride , materials science , nanoporous , photocatalysis , nitride , catalysis , covalent bond , carbon fibers , chemical engineering , chemistry , photochemistry , nanotechnology , organic chemistry , metallurgy , composite material , layer (electronics) , composite number , engineering
Azide containing bipyridine complex of cobalt was grafted to the propargylated nanoporous graphitic carbon nitride (npg‐C 3 N 4 ) via click reaction to obtain heterogenized photocatalyst which could efficiently provide direct esterification of aldehydes under visible light irradiation at room temperature. The use of click reaction as grafting strategy provided covalent attachment of the cobalt complex to support which not only provided higher loading but also precluded the leaching. Furthermore, the presence of carbon nitride support exhibited synergistic effect to enhance the reaction rate. In addition, the milder basic nature of nitrogen containing graphitic support provided efficient ester synthesis without the need for an external base. The synthesized photocatalyst was found to be quite robust which could easily be recovered and reused several times without significantly losing activity.