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In relation to this article, we declare that there is no conflict of interest.
Publication history
Received July 18, 2023
Revised August 16, 2023
Accepted August 16, 2023
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Platinum Decoration of a 3D Oxidized Graphitic Carbon Nitride/Graphene Aerogel for Enhanced Visible-Light Photocatalytic Hydrogen Evolution

University of Ulsan
Korean Chemical Engineering Research, November 2023, 61(4), 627-634(8), 10.9713/kcer.2023.61.4.627 Epub 1 November 2023
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Graphitic carbon nitride (g-C3N4) has attracted considerable attention since its discovery for its catalysis

of water splitting to hydrogen and oxygen under visible light irradiation. However, pristine g-C3N4 confers only low

photocatalytic efficiency and requires surface cocatalysts to reach moderate activity due to a lack of accessible surface

active sites. Inspired by the high specific surface area and superior electron transfer of graphene, we developed a

strongly coupled binary structure of graphene and g-C3N4 aerogel with 3D porous skeleton. The as-prepared 3D

structure photocatalysts achieve a high surface area that favors efficient photogenerated charge separation and transfer,

enhances the light-harvesting efficiency, and significantly improves the photocatalytic hydrogen evolution rate as well.

The photocatalyst performance is observed to be optimized at the ratio 3:7 (g-C3N4:GO), leading to photocatalytic H2

evolution of 16125.1 mmol. g-1. h-1 under visible light irradiation, more than 161 times higher than the rate achieved by

bulk g-C3N4.


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