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Dispersing Molecular Cobalt in Graphitic Carbon Nitride Frameworks for Photocatalytic Water Oxidation
Author(s) -
Zhang Guigang,
Huang Caijin,
Wang Xinchen
Publication year - 2015
Publication title -
small
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.785
H-Index - 236
eISSN - 1613-6829
pISSN - 1613-6810
DOI - 10.1002/smll.201402636
Subject(s) - photocatalysis , graphitic carbon nitride , carbon nitride , cobalt , materials science , catalysis , solar fuel , oxygen evolution , artificial photosynthesis , water splitting , chemical engineering , nitride , carbon fibers , electrochemistry , nanotechnology , chemistry , composite number , organic chemistry , electrode , composite material , layer (electronics) , engineering , metallurgy
The development of water oxidation catalysts (WOCs) to cooperate with light‐energy transducers for solar energy conversion by water splitting and CO 2 fixation is a demanding challenge. The key measure is to develop efficient and sustainable WOCs that can support a sustainable photocatalyst to reduce over‐potentials and thus to enhance reaction rate of water oxidation reaction. Cobalt has been indentified as active component of WOCs for photo/electrochemical water oxidation, and its performance relies strongly on the contact and adhesion of the cobalt species with photoactive substrates. Here, cobalt is homogeneously engineered into the framework of pristine graphitic carbon nitride (g‐C 3 N 4 ) via chemical interaction, establishing surface junctions on the polymeric photocatalyst for the water oxidation reaction. This modification promotes the surface kinetics of oxygen evolution reaction by the g‐C 3 N 4 ‐based photocatalytic system made of inexpensive substances, and further optimizations in the optical and textural structure of Co‐g‐C 3 N 4 is envisaged by considering ample choice of modification schemes for carbon nitride materials.