Kirandeep Bhagat, Vaishali Sethi, Kandalam V Ramanujachary, Samuel E Lofland, Ashok K Ganguli
{"title":"利用反向胶束路线合成的纳米结构 La2NiO4 及其磁性和光电化学特性研究","authors":"Kirandeep Bhagat, Vaishali Sethi, Kandalam V Ramanujachary, Samuel E Lofland, Ashok K Ganguli","doi":"10.1007/s12034-024-03318-w","DOIUrl":null,"url":null,"abstract":"<div><p>We synthesized La<sub>2</sub>NiO<sub>4</sub> nanostructures using the cationic surfactant-based reverse micellar route and reported on the effect of the size and shape of the La<sub>2</sub>NiO<sub>4</sub> nanostructures on their magnetic and photoelectrochemical properties. We satisfactorily refined the powder X-ray diffraction data in the tetragonal space group, <i>I4/mmm</i>. Magnetic susceptibility measurements were performed on all samples within the range of 5–300 K. The Curie–Weiss law determines the magnetic susceptibility of bulk La<sub>2</sub>NiO<sub>4</sub>, and a negative value for the Weiss temperature indicates antiferromagnetic exchange. The field-dependent magnetization curves of bulk La<sub>2</sub>NiO<sub>4</sub> suggest a canted antiferromagnetic behaviour. The Mott–Schottky plot demonstrates that La<sub>2</sub>NiO<sub>4</sub> is a <i>p</i>-type semiconducting material with holes as the primary charge carriers. Chronoamperometric measurements for these nanomaterials demonstrate excellent photostability of photocurrent.</p></div>","PeriodicalId":502,"journal":{"name":"Bulletin of Materials Science","volume":"47 4","pages":""},"PeriodicalIF":1.9000,"publicationDate":"2024-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Nanostructured La2NiO4 synthesized using reverse micellar route and study of their magnetic and photoelectrochemical properties\",\"authors\":\"Kirandeep Bhagat, Vaishali Sethi, Kandalam V Ramanujachary, Samuel E Lofland, Ashok K Ganguli\",\"doi\":\"10.1007/s12034-024-03318-w\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>We synthesized La<sub>2</sub>NiO<sub>4</sub> nanostructures using the cationic surfactant-based reverse micellar route and reported on the effect of the size and shape of the La<sub>2</sub>NiO<sub>4</sub> nanostructures on their magnetic and photoelectrochemical properties. We satisfactorily refined the powder X-ray diffraction data in the tetragonal space group, <i>I4/mmm</i>. Magnetic susceptibility measurements were performed on all samples within the range of 5–300 K. The Curie–Weiss law determines the magnetic susceptibility of bulk La<sub>2</sub>NiO<sub>4</sub>, and a negative value for the Weiss temperature indicates antiferromagnetic exchange. The field-dependent magnetization curves of bulk La<sub>2</sub>NiO<sub>4</sub> suggest a canted antiferromagnetic behaviour. The Mott–Schottky plot demonstrates that La<sub>2</sub>NiO<sub>4</sub> is a <i>p</i>-type semiconducting material with holes as the primary charge carriers. Chronoamperometric measurements for these nanomaterials demonstrate excellent photostability of photocurrent.</p></div>\",\"PeriodicalId\":502,\"journal\":{\"name\":\"Bulletin of Materials Science\",\"volume\":\"47 4\",\"pages\":\"\"},\"PeriodicalIF\":1.9000,\"publicationDate\":\"2024-09-23\",\"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://link.springer.com/article/10.1007/s12034-024-03318-w\",\"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://link.springer.com/article/10.1007/s12034-024-03318-w","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}
引用次数: 0
摘要
我们采用基于阳离子表面活性剂的反向胶束路线合成了 La2NiO4 纳米结构,并报告了 La2NiO4 纳米结构的尺寸和形状对其磁性和光电化学性质的影响。我们令人满意地完善了四方空间群 I4/mmm 的粉末 X 射线衍射数据。居里-韦斯定律决定了块状 La2NiO4 的磁感应强度,韦斯温度的负值表示反铁磁交换。块状 La2NiO4 随磁场变化的磁化曲线表明其具有倾斜的反铁磁性。莫特-肖特基曲线表明,La2NiO4 是一种以空穴为主要电荷载流子的 p 型半导体材料。对这些纳米材料进行的时变测量表明,其光电流具有极佳的光稳定性。
Nanostructured La2NiO4 synthesized using reverse micellar route and study of their magnetic and photoelectrochemical properties
We synthesized La2NiO4 nanostructures using the cationic surfactant-based reverse micellar route and reported on the effect of the size and shape of the La2NiO4 nanostructures on their magnetic and photoelectrochemical properties. We satisfactorily refined the powder X-ray diffraction data in the tetragonal space group, I4/mmm. Magnetic susceptibility measurements were performed on all samples within the range of 5–300 K. The Curie–Weiss law determines the magnetic susceptibility of bulk La2NiO4, and a negative value for the Weiss temperature indicates antiferromagnetic exchange. The field-dependent magnetization curves of bulk La2NiO4 suggest a canted antiferromagnetic behaviour. The Mott–Schottky plot demonstrates that La2NiO4 is a p-type semiconducting material with holes as the primary charge carriers. Chronoamperometric measurements for these nanomaterials demonstrate excellent photostability of photocurrent.
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.