{"title":"锕系元素纳米氧化物的特征尺寸和形态对其带隙的影响","authors":"A. P. Chernyshev","doi":"10.1134/S0020168523120026","DOIUrl":null,"url":null,"abstract":"<p>The effect of the characteristic size of nanoparticles, nanofiber (nanowire), and thin films of the AmO<sub>2</sub>, CmO<sub>2</sub>, NpO<sub>2</sub>, PaO<sub>2</sub>, PuO<sub>2</sub>, ThO<sub>2</sub>, and UO<sub>2</sub> actinide dioxides on their band gap has been studied quantitatively by a nanothermodynamic method. The size effect is essential in the case of ThO<sub>2</sub> nanoparticles, nanofiber, and thin films and NpO<sub>2</sub>, PuO<sub>2</sub>, and CmO<sub>2</sub> nanoparticles and nanofiber even at a characteristic size of about 20 nm. The size effect is significant for AmO<sub>2</sub>, PaO<sub>2</sub>, and UO<sub>2</sub> nanoparticles if their diameter is about 7–8 nm. The maximum attainable band gap of nano-objects is shown to be twice the band gap of the corresponding bulk material. The band gap of nano-objects having the same characteristic size decreases in the sequence nanoparticles > (nanofiber) nanowire > thin films. It is shown that, using mixed actinide oxides and varying their stoichiometry, characteristic size, and morphology, one can control the band gap of nano-objects in a wide range of permissible values.</p>","PeriodicalId":585,"journal":{"name":"Inorganic Materials","volume":"59 12","pages":"1313 - 1318"},"PeriodicalIF":0.9000,"publicationDate":"2024-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Influence of the Characteristic Size and Morphology of Actinide Nanooxides on Their Band Gap\",\"authors\":\"A. P. Chernyshev\",\"doi\":\"10.1134/S0020168523120026\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>The effect of the characteristic size of nanoparticles, nanofiber (nanowire), and thin films of the AmO<sub>2</sub>, CmO<sub>2</sub>, NpO<sub>2</sub>, PaO<sub>2</sub>, PuO<sub>2</sub>, ThO<sub>2</sub>, and UO<sub>2</sub> actinide dioxides on their band gap has been studied quantitatively by a nanothermodynamic method. The size effect is essential in the case of ThO<sub>2</sub> nanoparticles, nanofiber, and thin films and NpO<sub>2</sub>, PuO<sub>2</sub>, and CmO<sub>2</sub> nanoparticles and nanofiber even at a characteristic size of about 20 nm. The size effect is significant for AmO<sub>2</sub>, PaO<sub>2</sub>, and UO<sub>2</sub> nanoparticles if their diameter is about 7–8 nm. The maximum attainable band gap of nano-objects is shown to be twice the band gap of the corresponding bulk material. The band gap of nano-objects having the same characteristic size decreases in the sequence nanoparticles > (nanofiber) nanowire > thin films. It is shown that, using mixed actinide oxides and varying their stoichiometry, characteristic size, and morphology, one can control the band gap of nano-objects in a wide range of permissible values.</p>\",\"PeriodicalId\":585,\"journal\":{\"name\":\"Inorganic Materials\",\"volume\":\"59 12\",\"pages\":\"1313 - 1318\"},\"PeriodicalIF\":0.9000,\"publicationDate\":\"2024-03-19\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Inorganic Materials\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://link.springer.com/article/10.1134/S0020168523120026\",\"RegionNum\":4,\"RegionCategory\":\"材料科学\",\"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","FirstCategoryId":"88","ListUrlMain":"https://link.springer.com/article/10.1134/S0020168523120026","RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
Influence of the Characteristic Size and Morphology of Actinide Nanooxides on Their Band Gap
The effect of the characteristic size of nanoparticles, nanofiber (nanowire), and thin films of the AmO2, CmO2, NpO2, PaO2, PuO2, ThO2, and UO2 actinide dioxides on their band gap has been studied quantitatively by a nanothermodynamic method. The size effect is essential in the case of ThO2 nanoparticles, nanofiber, and thin films and NpO2, PuO2, and CmO2 nanoparticles and nanofiber even at a characteristic size of about 20 nm. The size effect is significant for AmO2, PaO2, and UO2 nanoparticles if their diameter is about 7–8 nm. The maximum attainable band gap of nano-objects is shown to be twice the band gap of the corresponding bulk material. The band gap of nano-objects having the same characteristic size decreases in the sequence nanoparticles > (nanofiber) nanowire > thin films. It is shown that, using mixed actinide oxides and varying their stoichiometry, characteristic size, and morphology, one can control the band gap of nano-objects in a wide range of permissible values.
期刊介绍：
Inorganic Materials is a journal that publishes reviews and original articles devoted to chemistry, physics, and applications of various inorganic materials including high-purity substances and materials. The journal discusses phase equilibria, including P–T–X diagrams, and the fundamentals of inorganic materials science, which determines preparatory conditions for compounds of various compositions with specified deviations from stoichiometry. Inorganic Materials is a multidisciplinary journal covering all classes of inorganic materials. The journal welcomes manuscripts from all countries in the English or Russian language.
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