M. L. Ovcharov, P. I. Glukhova, G. V. Korzhak, O. S. Kutsenko, T. R. Stara, S. Ya. Kuchmiy
{"title":"氮化碳晶体掺硫对可见光下酒精水溶液光催化氢气生成的影响","authors":"M. L. Ovcharov, P. I. Glukhova, G. V. Korzhak, O. S. Kutsenko, T. R. Stara, S. Ya. Kuchmiy","doi":"10.1007/s11237-024-09798-5","DOIUrl":null,"url":null,"abstract":"<p>The influence of sulfur on the morphology, spectral, and photocatalytic properties of bulk (S-g-C<sub>3</sub>N<sub>4</sub>) and crystalline carbon nitride (S-CGCN), obtained by the pyrolysis of melamine–S<sub>8</sub> mixtures and additional thermal treatment of S-g-C<sub>3</sub>N<sub>4</sub> in the eutectic melt of KCl and LiCl salts, has been investigated. It is shown that crystalline carbon nitride obtained in the presence of 5 wt.% of S<sub>8</sub> (5S-CGCN) demonstrate the highest photocatalytic activity in the hydrogen evolution process from water–ethanol solutions under the effect of visible light. The effective quantum yield of H<sub>2</sub> formation with the participation of 5S-CGCN and metal co-catalysts (palladium and gold) is Φ ≈ 100% at λ = 405 nm, which is almost twice as much as with the participation of unmodified CGCN. The high activity of 5S-CGCN can be associated with more intensive absorption of light, better separation of photogenerated charges, and suppression of their recombination.</p>","PeriodicalId":796,"journal":{"name":"Theoretical and Experimental Chemistry","volume":null,"pages":null},"PeriodicalIF":0.7000,"publicationDate":"2024-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Influence of Sulfur Doping of Crystalline Carbon Nitride on Photocatalytic Hydrogen Evolution from Alcohol–Aqueous Solutions Under Visible Light\",\"authors\":\"M. L. Ovcharov, P. I. Glukhova, G. V. Korzhak, O. S. Kutsenko, T. R. Stara, S. Ya. Kuchmiy\",\"doi\":\"10.1007/s11237-024-09798-5\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>The influence of sulfur on the morphology, spectral, and photocatalytic properties of bulk (S-g-C<sub>3</sub>N<sub>4</sub>) and crystalline carbon nitride (S-CGCN), obtained by the pyrolysis of melamine–S<sub>8</sub> mixtures and additional thermal treatment of S-g-C<sub>3</sub>N<sub>4</sub> in the eutectic melt of KCl and LiCl salts, has been investigated. It is shown that crystalline carbon nitride obtained in the presence of 5 wt.% of S<sub>8</sub> (5S-CGCN) demonstrate the highest photocatalytic activity in the hydrogen evolution process from water–ethanol solutions under the effect of visible light. The effective quantum yield of H<sub>2</sub> formation with the participation of 5S-CGCN and metal co-catalysts (palladium and gold) is Φ ≈ 100% at λ = 405 nm, which is almost twice as much as with the participation of unmodified CGCN. The high activity of 5S-CGCN can be associated with more intensive absorption of light, better separation of photogenerated charges, and suppression of their recombination.</p>\",\"PeriodicalId\":796,\"journal\":{\"name\":\"Theoretical and Experimental Chemistry\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":0.7000,\"publicationDate\":\"2024-06-03\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Theoretical and Experimental Chemistry\",\"FirstCategoryId\":\"92\",\"ListUrlMain\":\"https://link.springer.com/article/10.1007/s11237-024-09798-5\",\"RegionNum\":4,\"RegionCategory\":\"化学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q4\",\"JCRName\":\"CHEMISTRY, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Theoretical and Experimental Chemistry","FirstCategoryId":"92","ListUrlMain":"https://link.springer.com/article/10.1007/s11237-024-09798-5","RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"CHEMISTRY, MULTIDISCIPLINARY","Score":null,"Total":0}
Influence of Sulfur Doping of Crystalline Carbon Nitride on Photocatalytic Hydrogen Evolution from Alcohol–Aqueous Solutions Under Visible Light
The influence of sulfur on the morphology, spectral, and photocatalytic properties of bulk (S-g-C3N4) and crystalline carbon nitride (S-CGCN), obtained by the pyrolysis of melamine–S8 mixtures and additional thermal treatment of S-g-C3N4 in the eutectic melt of KCl and LiCl salts, has been investigated. It is shown that crystalline carbon nitride obtained in the presence of 5 wt.% of S8 (5S-CGCN) demonstrate the highest photocatalytic activity in the hydrogen evolution process from water–ethanol solutions under the effect of visible light. The effective quantum yield of H2 formation with the participation of 5S-CGCN and metal co-catalysts (palladium and gold) is Φ ≈ 100% at λ = 405 nm, which is almost twice as much as with the participation of unmodified CGCN. The high activity of 5S-CGCN can be associated with more intensive absorption of light, better separation of photogenerated charges, and suppression of their recombination.
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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