{"title":"水合物层在纳米泡稳定性中的作用","authors":"Yu. K. Levin","doi":"10.1134/S1061933X25600228","DOIUrl":null,"url":null,"abstract":"<p>The article considers factors determining the stability of a nanobubble with a hydrate layer having a thickness of 1 nm and a dielectric permittivity of about 3. Two stability hypotheses are compared, namely, electrostatic and mechanical (ice-effect or “electrofreezing”). In the first case, the Laplace pressure is compensated by the electrostatic pressure at the bubble boundary; in the second case, it is compensated by the effect of the electrofreezing of its Δ-layer in a high electric field. It is shown that, in salt-free water, a lower nanobubble charge is required for the formation of an ice shell than in the case of the Coulomb stabilization mechanism. In seawater, the Coulomb mechanism is, on the contrary, more efficient, because icing is counteracted by dissolved salt ions. The sizes and charges of the nanobubble are determined for both stability mechanisms.</p>","PeriodicalId":521,"journal":{"name":"Colloid Journal","volume":"87 4","pages":"518 - 523"},"PeriodicalIF":1.1000,"publicationDate":"2025-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"The Role of the Hydrate Layer in Nanobubble Stability\",\"authors\":\"Yu. K. Levin\",\"doi\":\"10.1134/S1061933X25600228\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>The article considers factors determining the stability of a nanobubble with a hydrate layer having a thickness of 1 nm and a dielectric permittivity of about 3. Two stability hypotheses are compared, namely, electrostatic and mechanical (ice-effect or “electrofreezing”). In the first case, the Laplace pressure is compensated by the electrostatic pressure at the bubble boundary; in the second case, it is compensated by the effect of the electrofreezing of its Δ-layer in a high electric field. It is shown that, in salt-free water, a lower nanobubble charge is required for the formation of an ice shell than in the case of the Coulomb stabilization mechanism. In seawater, the Coulomb mechanism is, on the contrary, more efficient, because icing is counteracted by dissolved salt ions. The sizes and charges of the nanobubble are determined for both stability mechanisms.</p>\",\"PeriodicalId\":521,\"journal\":{\"name\":\"Colloid Journal\",\"volume\":\"87 4\",\"pages\":\"518 - 523\"},\"PeriodicalIF\":1.1000,\"publicationDate\":\"2025-08-15\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Colloid Journal\",\"FirstCategoryId\":\"92\",\"ListUrlMain\":\"https://link.springer.com/article/10.1134/S1061933X25600228\",\"RegionNum\":4,\"RegionCategory\":\"化学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q4\",\"JCRName\":\"CHEMISTRY, PHYSICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Colloid Journal","FirstCategoryId":"92","ListUrlMain":"https://link.springer.com/article/10.1134/S1061933X25600228","RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
The Role of the Hydrate Layer in Nanobubble Stability
The article considers factors determining the stability of a nanobubble with a hydrate layer having a thickness of 1 nm and a dielectric permittivity of about 3. Two stability hypotheses are compared, namely, electrostatic and mechanical (ice-effect or “electrofreezing”). In the first case, the Laplace pressure is compensated by the electrostatic pressure at the bubble boundary; in the second case, it is compensated by the effect of the electrofreezing of its Δ-layer in a high electric field. It is shown that, in salt-free water, a lower nanobubble charge is required for the formation of an ice shell than in the case of the Coulomb stabilization mechanism. In seawater, the Coulomb mechanism is, on the contrary, more efficient, because icing is counteracted by dissolved salt ions. The sizes and charges of the nanobubble are determined for both stability mechanisms.
期刊介绍:
Colloid Journal (Kolloidnyi Zhurnal) is the only journal in Russia that publishes the results of research in the area of chemical science dealing with the disperse state of matter and surface phenomena in disperse systems. The journal covers experimental and theoretical works on a great variety of colloid and surface phenomena: the structure and properties of interfaces; adsorption phenomena and structure of adsorption layers of surfactants; capillary phenomena; wetting films; wetting and spreading; and detergency. The formation of colloid systems, their molecular-kinetic and optical properties, surface forces, interaction of colloidal particles, stabilization, and criteria of stability loss of different disperse systems (lyosols and aerosols, suspensions, emulsions, foams, and micellar systems) are also topics of the journal. Colloid Journal also includes the phenomena of electro- and diffusiophoresis, electro- and thermoosmosis, and capillary and reverse osmosis, i.e., phenomena dealing with the existence of diffusion layers of molecules and ions in the vicinity of the interface.