{"title":"Dependence of Changes in Surface Charges on the Degree of Substitution of Mg by Al in Synthetic Smectites","authors":"Yu. A. Alikina, T. V. Khamova, O. Yu. Golubeva","doi":"10.1134/S1087659624600303","DOIUrl":null,"url":null,"abstract":"<p>The dependence of the ζ-surface potential of synthetic aluminosilicates with a montmorillonite structure of systematically varying Na<sub>2<i>x</i></sub>(Al<sub>2(1 –</sub> <sub><i>x</i>)</sub>,Mg<sub>2<i>x</i></sub>)Si<sub>4</sub>O<sub>10</sub>(OH)<sub>2</sub>·<i>n</i>H<sub>2</sub>O composition, where 0.1 ≤ <i>x</i> ≤ 0.9, on the chemical composition of the samples and the pH of the environment is studied. The influence of the degree of isomorphic substitution of magnesium atoms by aluminum on the nature of the change of the ζ‑potential is shown. An increase in the degree of isomorphic substitution and an increase in the pH of the medium is accompanied by an increase in the negative charge of the sample surface. The results obtained make it possible to select the optimal compositions of aluminosilicate sorbents for the extraction of differently charged ions from aqueous solutions with different pH values and for use as carriers of drugs.</p>","PeriodicalId":580,"journal":{"name":"Glass Physics and Chemistry","volume":"50 2","pages":"203 - 206"},"PeriodicalIF":0.8000,"publicationDate":"2024-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Glass Physics and Chemistry","FirstCategoryId":"88","ListUrlMain":"https://link.springer.com/article/10.1134/S1087659624600303","RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"MATERIALS SCIENCE, CERAMICS","Score":null,"Total":0}
引用次数: 0
Abstract
The dependence of the ζ-surface potential of synthetic aluminosilicates with a montmorillonite structure of systematically varying Na2x(Al2(1 –x),Mg2x)Si4O10(OH)2·nH2O composition, where 0.1 ≤ x ≤ 0.9, on the chemical composition of the samples and the pH of the environment is studied. The influence of the degree of isomorphic substitution of magnesium atoms by aluminum on the nature of the change of the ζ‑potential is shown. An increase in the degree of isomorphic substitution and an increase in the pH of the medium is accompanied by an increase in the negative charge of the sample surface. The results obtained make it possible to select the optimal compositions of aluminosilicate sorbents for the extraction of differently charged ions from aqueous solutions with different pH values and for use as carriers of drugs.
期刊介绍：
Glass Physics and Chemistry presents results of research on the inorganic and physical chemistry of glass, ceramics, nanoparticles, nanocomposites, and high-temperature oxides and coatings. The journal welcomes manuscripts from all countries in the English or Russian language.
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