I. A. Kirovskaya, R. V. Ekkert, A. O. Ekkert, N. V. Chernous
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As a result, the temperature conditions for occurrence of physical and chemical activated adsorption are established. With regard to the results of IR spectroscopy, the studies of acid-base properties of the surfaces of the system components, and their charging under conditions of adsorption, the ideas are substantiated about the nature of active centers, the role of which is taken by surface coordinately unsaturated atoms (primarily In and Zn atoms) and about the donor-acceptor mechanism of gas adsorption with gases participating as acceptors. Increased activity of the surfaces of the system semiconductors with respect to basic gases, which is confirmed unambiguously by the direct adsorption studies, and also the change in electrical conductivity under conditions of adsorption even at room temperature have been the basis for recommending the studied semiconductors to be used for fabricating the corresponding low-temperature sensors.</p></div></div>","PeriodicalId":586,"journal":{"name":"Inorganic Materials: Applied Research","volume":"13 4","pages":"1089 - 1093"},"PeriodicalIF":0.5000,"publicationDate":"2022-07-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Adsorption Properties of Novel Materials Based on the InP–ZnS System\",\"authors\":\"I. A. Kirovskaya, R. V. Ekkert, A. O. Ekkert, N. V. Chernous\",\"doi\":\"10.1134/S2075113322040190\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div><h3>\\n <b>Abstract</b>—</h3><p>Adsorption properties of solid solutions and binary components of the InP–ZnS system with respect to NO<sub>2</sub> and NH<sub>3</sub> in the temperature intervals of 250–490 K and initial pressures of 15–30 Pa have been studied for the first time. In selecting adsorbates, their unequal electron nature and toxicity is taken into account. An analysis of experimental dependences of adsorption α<sub><i>p</i></sub> = <i>f</i>(<i>T</i>), α<sub><i>T</i></sub> = <i>f</i>(<i>P</i>), and α<sub><i>T</i></sub> = <i>f</i>(<i>t</i>) and calculated values of differential heat, differential entropy, activation energy of adsorption, and electrical conductivity “behavior” under condition of adsorption is conducted. As a result, the temperature conditions for occurrence of physical and chemical activated adsorption are established. With regard to the results of IR spectroscopy, the studies of acid-base properties of the surfaces of the system components, and their charging under conditions of adsorption, the ideas are substantiated about the nature of active centers, the role of which is taken by surface coordinately unsaturated atoms (primarily In and Zn atoms) and about the donor-acceptor mechanism of gas adsorption with gases participating as acceptors. Increased activity of the surfaces of the system semiconductors with respect to basic gases, which is confirmed unambiguously by the direct adsorption studies, and also the change in electrical conductivity under conditions of adsorption even at room temperature have been the basis for recommending the studied semiconductors to be used for fabricating the corresponding low-temperature sensors.</p></div></div>\",\"PeriodicalId\":586,\"journal\":{\"name\":\"Inorganic Materials: Applied Research\",\"volume\":\"13 4\",\"pages\":\"1089 - 1093\"},\"PeriodicalIF\":0.5000,\"publicationDate\":\"2022-07-19\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Inorganic Materials: Applied Research\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://link.springer.com/article/10.1134/S2075113322040190\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q4\",\"JCRName\":\"MATERIALS SCIENCE, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Inorganic Materials: Applied Research","FirstCategoryId":"1085","ListUrlMain":"https://link.springer.com/article/10.1134/S2075113322040190","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
Adsorption Properties of Novel Materials Based on the InP–ZnS System
Abstract—
Adsorption properties of solid solutions and binary components of the InP–ZnS system with respect to NO2 and NH3 in the temperature intervals of 250–490 K and initial pressures of 15–30 Pa have been studied for the first time. In selecting adsorbates, their unequal electron nature and toxicity is taken into account. An analysis of experimental dependences of adsorption αp = f(T), αT = f(P), and αT = f(t) and calculated values of differential heat, differential entropy, activation energy of adsorption, and electrical conductivity “behavior” under condition of adsorption is conducted. As a result, the temperature conditions for occurrence of physical and chemical activated adsorption are established. With regard to the results of IR spectroscopy, the studies of acid-base properties of the surfaces of the system components, and their charging under conditions of adsorption, the ideas are substantiated about the nature of active centers, the role of which is taken by surface coordinately unsaturated atoms (primarily In and Zn atoms) and about the donor-acceptor mechanism of gas adsorption with gases participating as acceptors. Increased activity of the surfaces of the system semiconductors with respect to basic gases, which is confirmed unambiguously by the direct adsorption studies, and also the change in electrical conductivity under conditions of adsorption even at room temperature have been the basis for recommending the studied semiconductors to be used for fabricating the corresponding low-temperature sensors.
期刊介绍：
Inorganic Materials: Applied Research contains translations of research articles devoted to applied aspects of inorganic materials. Best articles are selected from four Russian periodicals: Materialovedenie, Perspektivnye Materialy, Fizika i Khimiya Obrabotki Materialov, and Voprosy Materialovedeniya and translated into English. The journal reports recent achievements in materials science: physical and chemical bases of materials science; effects of synergism in composite materials; computer simulations; creation of new materials (including carbon-based materials and ceramics, semiconductors, superconductors, composite materials, polymers, materials for nuclear engineering, materials for aircraft and space engineering, materials for quantum electronics, materials for electronics and optoelectronics, materials for nuclear and thermonuclear power engineering, radiation-hardened materials, materials for use in medicine, etc.); analytical techniques; structure–property relationships; nanostructures and nanotechnologies; advanced technologies; use of hydrogen in structural materials; and economic and environmental issues. The journal also considers engineering issues of materials processing with plasma, high-gradient crystallization, laser technology, and ultrasonic technology. Currently the journal does not accept direct submissions, but submissions to one of the source journals is possible.
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