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Convenient Immobilization of Cobalt Corroles on Carbon Nanotubes through Covalent Bonds for Electrocatalytic Hydrogen and Oxygen Evolution Reactions
Author(s) -
Li Hua,
Li Xialiang,
Lei Haitao,
Zhou Guojun,
Zhang Wei,
Cao Rui
Publication year - 2019
Publication title -
chemsuschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.412
H-Index - 157
eISSN - 1864-564X
pISSN - 1864-5631
DOI - 10.1002/cssc.201802765
Subject(s) - covalent bond , oxygen evolution , carbon nanotube , cobalt , aqueous solution , chemistry , electrochemistry , electrocatalyst , carbon fibers , chemical engineering , inorganic chemistry , materials science , nanotechnology , organic chemistry , composite number , electrode , engineering , composite material
Two different methods were used to immobilize Co corroles on carbon nanotubes (CNTs) through covalent bonds. The resulting CNTs engineered with Co corroles were used as electrocatalysts for the hydrogen evolution reaction (HER) and the oxygen evolution reaction (OER) in aqueous solutions of pH 0, 7, and 14. For both HER and OER in all solutions, the hybrids obtained by attaching Co corroles on CNTs through amidation coupling showed better performance. This is likely because the large surface area and good electrical conductivity of CNTs can be well preserved during the amidation reaction under mild conditions.