Effect of mechanochemical preparation of 2D g-C3N4 on electronic properties and efficiency of photocatalytic hydrogen evolution

被引：11
|
作者：
Posudievsky, Oleg Yu [1 ]
Kondratyuk, Andrii S. [1 ]
Kozarenko, Olga A. [1 ]
Cherepanov, Vsevolod V. [2 ]
Koshechko, Vyacheslav G. [1 ]
Pokhodenko, Vitaly D. [1 ]
机构：
[1] Natl Acad Sci Ukraine, LV Pisarzhevsky Inst Phys Chem, 31 Prospekt Nauki, UA-03028 Kiev, Ukraine
[2] Natl Acad Sci Ukraine, Inst Phys, 46 Prospekt Nauki, UA-03028 Kiev, Ukraine
来源：
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2019年 / 44卷 / 33期
关键词：
Graphene-like C3N4; Mechanochemical solventless delamination; Morphology; Electronic properties; Photocatalytic hydrogen evolution; GRAPHITIC CARBON NITRIDE; FREE LIQUID EXFOLIATION; GRAPHENE-LIKE STATE; 2-DIMENSIONAL MATERIALS; NANOSHEETS; DEGRADATION; FABRICATION; MONOLAYER; C3N4;
D O I：
10.1016/j.ijhydene.2019.05.130
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
A comparative study of morphology, spectral and photocatalytic properties of graphene-like C3N4 samples prepared by liquid-phase exfoliation of the bulk (l-C3N4) and mechanochemically delaminated g-C3N4 (m-C3N4) was performed for the first time. It was established that the particles of the mechanochemically prepared m-C3N4 are predominantly monolayer whereas the particles of l-C3N4 possess few-layer morphology. It was shown that m-C3N4 exhibits higher photocatalytic activity in the photocatalytic hydrogen evolution from aqueous solution of lactic acid under AM1.5G irradiation due to monolayer morphology, higher reduction potential, as well as more efficient separation and transfer of the photogenerated charges. (C) 2019 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：17922 / 17929
页数：8
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