Here we report a facile impregnation
synthesis of layered Co(OH)2 deposited with g-C3N4 while the pH
value is adjusted by using ammonia solution for photocatalytic water
oxidation with UV–vis and visible light illumination. This
surface modification not only accelerates the interface transfer rate
of charge carriers but also reduces the excessive energy barrier for
O–O formation, thus leading to enhanced reaction kinetics for
photocatalytic water oxidation. The optimum oxygen evolution rates
(OERs) of the Co(OH)2/g-C3N4 sample
reached 27.4 and 7.1 μmol h–1 under UV–vis
(λ >300 nm) and visible light (λ >420 nm) irradiation,
which are 5.5 and 7 times faster than those for pristine g-C3N4, respectively. These results underline the possibility
for the development of effective, robust, and earth-abundant WOCs
for the promotion of water-splitting photocatalysis by sustainable
g-C3N4 polymer photocatalysts.
Building step-scheme (S-scheme) heterojunctions is newly emerging to be an efficient means to get excellent photocatalysts for water pollution control. Herein, a 2D/0D S-scheme heterojunction of C3N5/Bi2WO6 is synthesized by...
Cobalt selenide has been processed as an effictive cocatalyst to decorate with visible light photocatalysts, including WO 3 , BiVO 4 , and g-C 3 N 4 to establish intense surface contact with the substrates for photocatalytic water oxidation reaction. Compared with CoO x and CoS x , CoSe 2 is superior in improving the photocatalytic water oxidation activity due to the lowest anionic electronegativity to construct dense adhesion, enabling fast interfacial charge transfer for water oxidation reaction.Water splitting provides a promising and clean manner to convert solar energy into chemical fuel, which relaxes the excessive rely on fossil fuels. 1 However, any process of water splitting for solar H 2 production require promoters to catalyze the sluggish oxygen evolution reaction (OER), involving uphill energy consumption, multiple-electrons transfer, and complicated O-H bond breaking and O-O bond formation. 2 Currently, the state of the art water This journal is
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