用氯化镁修饰的纳米晶氮化碳在可见光下催化醇水溶液中析氢

IF 0.7 4区化学 Q4 CHEMISTRY, MULTIDISCIPLINARY

Theoretical and Experimental Chemistry Pub Date : 2022-10-08 DOI:10.1007/s11237-022-09736-3

G. Ya. Grodzyuk, K. V. Koryakina, V. V. Shvalagin, G. V. Korzhak, S. Ya. Kuchmiy

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引用次数: 0

摘要

制备了氯化镁改性的纳米晶类石墨氮化碳(CGCN)样品。对合成的Mg-CGCN样品进行了紫外、红外光谱、x射线衍射、x射线能谱分析和扫描电镜表征。结果表明，Mg-CGCN在可见光下对乙醇水溶液析氢反应的光催化活性比未掺杂的CGCN高60%。这可能与mgg2 +离子掺入CGCN结构引起的电物理特性(允许带电位)的变化有关，改善了光生电荷的解离，抑制了它们的重组。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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

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

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.

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来源期刊

Theoretical and Experimental Chemistry CHEMISTRY, MULTIDISCIPLINARY-

CiteScore

1.60

自引率

10.00%

发文量

审稿时长

6-12 weeks

期刊介绍： Theoretical and Experimental Chemistry is a journal for the rapid publication of research communications and reviews on modern problems of physical chemistry such as: a) physicochemical bases, principles, and methods for creation of novel processes, compounds, and materials; b) physicochemical principles of chemical process control, influence of external physical forces on chemical reactions; c) physical nanochemistry, nanostructures and nanomaterials, functional nanomaterials, size-dependent properties of materials.