{"title":"利用空气等离子体电解法合成α-Ni(OH)2 纳米晶体及其表征","authors":"Saeed Ebrahimi, Masoud Rezvani Jalal, Masoud Pishdast","doi":"10.1007/s12034-024-03272-7","DOIUrl":null,"url":null,"abstract":"<p>In this article, nickel hydroxide nanocrystals are synthesized for the first time by a simple air-plasma electrolysis setup. Aqueous solution of nickel nitrate is used as the electrolyte. Once the electrolysis is started, a green powder is produced at the contact point of the plasma and the solution. Electron microscopy (FESEM and TEM) of the powder indicates that most of the particles are spherical with 25–30 nm size. Elemental analysis, Fourier transform infrared spectroscopy and X-ray diffraction pattern reveal that the powder is nano-crystalline Ni(OH)<sub>2</sub>⋅0.75H<sub>2</sub>O with rhombohedral structure (or α-Ni(OH)<sub>2</sub>). To evaluate the lattice strain and dislocation density, the methods of Scherrer, Williamson–Hall, Williamson–Smallman and also Halder–Wagner are used. Comparisons show that the Halder–Wagner method provides more accurate results. The size of the nano-crystallites is estimated to be about 2.38 nm by this method, and the strain and dislocation density are obtained at 0.3299 and 17.72 line m<sup>−2</sup>, respectively. The results of this research confirm that the room-temperature atmospheric plasma electrolysis can be a promising and efficient candidate for the synthesis of hydroxide nanocrystals, which may have wide applications in the energy storage systems and supercapacitor industries.</p>","PeriodicalId":502,"journal":{"name":"Bulletin of Materials Science","volume":null,"pages":null},"PeriodicalIF":1.9000,"publicationDate":"2024-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Synthesis of α-Ni(OH)2 nanocrystals using air-plasma electrolysis method and its characterization\",\"authors\":\"Saeed Ebrahimi, Masoud Rezvani Jalal, Masoud Pishdast\",\"doi\":\"10.1007/s12034-024-03272-7\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>In this article, nickel hydroxide nanocrystals are synthesized for the first time by a simple air-plasma electrolysis setup. Aqueous solution of nickel nitrate is used as the electrolyte. Once the electrolysis is started, a green powder is produced at the contact point of the plasma and the solution. Electron microscopy (FESEM and TEM) of the powder indicates that most of the particles are spherical with 25–30 nm size. Elemental analysis, Fourier transform infrared spectroscopy and X-ray diffraction pattern reveal that the powder is nano-crystalline Ni(OH)<sub>2</sub>⋅0.75H<sub>2</sub>O with rhombohedral structure (or α-Ni(OH)<sub>2</sub>). To evaluate the lattice strain and dislocation density, the methods of Scherrer, Williamson–Hall, Williamson–Smallman and also Halder–Wagner are used. Comparisons show that the Halder–Wagner method provides more accurate results. The size of the nano-crystallites is estimated to be about 2.38 nm by this method, and the strain and dislocation density are obtained at 0.3299 and 17.72 line m<sup>−2</sup>, respectively. The results of this research confirm that the room-temperature atmospheric plasma electrolysis can be a promising and efficient candidate for the synthesis of hydroxide nanocrystals, which may have wide applications in the energy storage systems and supercapacitor industries.</p>\",\"PeriodicalId\":502,\"journal\":{\"name\":\"Bulletin of Materials Science\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":1.9000,\"publicationDate\":\"2024-07-10\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Bulletin of Materials Science\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://doi.org/10.1007/s12034-024-03272-7\",\"RegionNum\":4,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"MATERIALS SCIENCE, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Bulletin of Materials Science","FirstCategoryId":"88","ListUrlMain":"https://doi.org/10.1007/s12034-024-03272-7","RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
Synthesis of α-Ni(OH)2 nanocrystals using air-plasma electrolysis method and its characterization
In this article, nickel hydroxide nanocrystals are synthesized for the first time by a simple air-plasma electrolysis setup. Aqueous solution of nickel nitrate is used as the electrolyte. Once the electrolysis is started, a green powder is produced at the contact point of the plasma and the solution. Electron microscopy (FESEM and TEM) of the powder indicates that most of the particles are spherical with 25–30 nm size. Elemental analysis, Fourier transform infrared spectroscopy and X-ray diffraction pattern reveal that the powder is nano-crystalline Ni(OH)2⋅0.75H2O with rhombohedral structure (or α-Ni(OH)2). To evaluate the lattice strain and dislocation density, the methods of Scherrer, Williamson–Hall, Williamson–Smallman and also Halder–Wagner are used. Comparisons show that the Halder–Wagner method provides more accurate results. The size of the nano-crystallites is estimated to be about 2.38 nm by this method, and the strain and dislocation density are obtained at 0.3299 and 17.72 line m−2, respectively. The results of this research confirm that the room-temperature atmospheric plasma electrolysis can be a promising and efficient candidate for the synthesis of hydroxide nanocrystals, which may have wide applications in the energy storage systems and supercapacitor industries.
期刊介绍:
The Bulletin of Materials Science is a bi-monthly journal being published by the Indian Academy of Sciences in collaboration with the Materials Research Society of India and the Indian National Science Academy. The journal publishes original research articles, review articles and rapid communications in all areas of materials science. The journal also publishes from time to time important Conference Symposia/ Proceedings which are of interest to materials scientists. It has an International Advisory Editorial Board and an Editorial Committee. The Bulletin accords high importance to the quality of articles published and to keep at a minimum the processing time of papers submitted for publication.