Photocatalytic Evolution of Hydrogen from Alcohol-Aqueous Solutions using Nanocrystalline Carbon Nitride Modified with Magnesium Chloride Under the Visible Light Irradiation

被引：3

作者：

Grodzyuk, G. Ya ^{[1
]}

Koryakina, K., V ^{[1
,2
]}

Shvalagin, V. V. ^{[1
]}

Korzhak, G., V ^{[1
]}

Kuchmiy, S. Ya ^{[1
]}

机构：

[1] NAS Ukraine, LV Pisarzhevsky Inst Phys Chem, Kiev, Ukraine

[2] Taras Shevchenko Kyiv Natl Univ, Kiev, Ukraine

来源：

THEORETICAL AND EXPERIMENTAL CHEMISTRY | 2022年 / 58卷 / 03期

关键词：

nanocrystalline carbon nitride; magnesium modification; photocatalysis; hydrogen evolution; LAYERED NIOBATES; REDUCTION; G-C3N4; WATER; SEMICONDUCTORS; OXIDATION;

D O I：

10.1007/s11237-022-09736-3

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Samples of nanocrystalline graphite-like carbon nitride (CGCN) modified with magnesium chloride have been obtained. The synthesized Mg-CGCN samples have been characterized by UV and IR spectroscopies, X-ray diffraction, energy dispersive X-ray analysis, and scanning electron microscopy. It is found that Mg-CGCN exhibits 60% higher photocatalytic activity in the reaction of hydrogen evolution from aqueous ethanol solutions under visible light than undoped CGCN. This may be related to a change in electrophysical characteristics (potentials of allowed bands) resulting from the incorporation of Mg2+ ions into the CGCN structure, improved dissociation of photogenerated charges, and inhibition of their recombination.

引用

页码：198 / 204

页数：7

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