纳米晶氮化碳和钯共催化剂在可见光影响下将糠醛化学选择性光催化还原为糠醇

IF 0.7 4区 化学 Q4 CHEMISTRY, MULTIDISCIPLINARY
G. V. Korzhak, T. R. Stara, O. S. Kutsenko, P. O. Kuzema, V. M. Anishchenko, S. Ya. Kuchmiy
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引用次数: 0

摘要

研究证实,在酸性介质中,甲醇/水和乙醇/水等电子捐赠底物在可见光作用下,在助催化剂存在下,结晶石墨状氮化碳(CGCN)在糠醛化学选择性还原为糠醇的过程中表现出很高的光催化活性。当在反应混合物中加入氯化钯添加剂时,该过程的速率要高于有 Pd/SiO2 助催化剂参与时的速率。这种现象可能是由于在氯化钯存在下原位形成了 CGCN/Pd0 复合光催化剂,与 CGCN-Pd/SiO2 体系相比,光生电荷得到了更好的分离。在最佳条件下(λirr = 405 nm),糠醛还原的有效量子产率为 56%。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Chemoselective Photocatalytic Reduction of Furfural to Furfuryl Alcohol Under the Influence of Visible Light with the Participation of Nanocrystalline Carbon Nitride and Palladium Co-Catalysts

Chemoselective Photocatalytic Reduction of Furfural to Furfuryl Alcohol Under the Influence of Visible Light with the Participation of Nanocrystalline Carbon Nitride and Palladium Co-Catalysts

Chemoselective Photocatalytic Reduction of Furfural to Furfuryl Alcohol Under the Influence of Visible Light with the Participation of Nanocrystalline Carbon Nitride and Palladium Co-Catalysts

It is established that crystalline graphite-like carbon nitride (CGCN) exhibits high photocatalytic activity in the process of chemoselective reduction of furfural to furfuryl alcohol in the presence of co-catalysts under the action of visible light by electron-donating substrates, such as methanol/water and ethanol/water, in an acidic medium. When palladium chloride additives are introduced into the reaction mixture, the rate of the process is higher than with the participation of the Pd/SiO2 co-catalyst. This phenomenon may be due to the in situ formation of the CGCN/Pd0 composite photocatalyst in the presence of PdCl2, where the photogenerated charges are better separated than in the CGCN-Pd/SiO2 system. The effective quantum yield of furfural reduction is 56% at λirr = 405 nm) under optimal conditions.

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来源期刊
Theoretical and Experimental Chemistry
Theoretical and Experimental Chemistry CHEMISTRY, MULTIDISCIPLINARY-
CiteScore
1.60
自引率
10.00%
发文量
30
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.
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