{"title":"以凝块为基础的生物合成方法合成的氧化钴纳米颗粒的结构、光学、电学和磁性的综合研究","authors":"C. T. Anuradha, J. Jeyanthi","doi":"10.1007/s00339-025-08451-9","DOIUrl":null,"url":null,"abstract":"<div><p>This study presents a novel synthesis of Co₃O₄ nanoparticles derived from a natural bio-template approach via curd using an innovative sol-gel auto-combustion process. The proposed process utilizes curd’s bioactive components, eliminating the need for toxic chemicals and offering an environmentally friendly approach. The synthesized Co₃O₄ nanoparticles show excellent structural and optical properties, with a crystallite size of 27.31 nm from XRD analysis. FESEM and HRTEM imaging reveals a well-defined shapes spherical morphology with minimal agglomeration. The diffuse reflectance spectroscopy shows a dual band gap of 3.72 eV related to a direct transition and at 2.53 eV related to an indirect electronic transition. The photoluminescence spectra of the nanoparticles exhibit characteristic emission peaks, at 790.67 and 523.02 nm and it suggest a strong influence of quantum confinement effects. Sustainable synthesis gives highly pure nanoparticles with minimal environmental impact, suitable for catalysis, energy storage, and nanoelectronic applications.</p></div>","PeriodicalId":473,"journal":{"name":"Applied Physics A","volume":"131 4","pages":""},"PeriodicalIF":2.8000,"publicationDate":"2025-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Comprehensive study of structural, optical, electrical, and magnetic properties of cobalt oxide nanoparticles synthesized via curd-based biogenic approach\",\"authors\":\"C. T. Anuradha, J. Jeyanthi\",\"doi\":\"10.1007/s00339-025-08451-9\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>This study presents a novel synthesis of Co₃O₄ nanoparticles derived from a natural bio-template approach via curd using an innovative sol-gel auto-combustion process. The proposed process utilizes curd’s bioactive components, eliminating the need for toxic chemicals and offering an environmentally friendly approach. The synthesized Co₃O₄ nanoparticles show excellent structural and optical properties, with a crystallite size of 27.31 nm from XRD analysis. FESEM and HRTEM imaging reveals a well-defined shapes spherical morphology with minimal agglomeration. The diffuse reflectance spectroscopy shows a dual band gap of 3.72 eV related to a direct transition and at 2.53 eV related to an indirect electronic transition. The photoluminescence spectra of the nanoparticles exhibit characteristic emission peaks, at 790.67 and 523.02 nm and it suggest a strong influence of quantum confinement effects. Sustainable synthesis gives highly pure nanoparticles with minimal environmental impact, suitable for catalysis, energy storage, and nanoelectronic applications.</p></div>\",\"PeriodicalId\":473,\"journal\":{\"name\":\"Applied Physics A\",\"volume\":\"131 4\",\"pages\":\"\"},\"PeriodicalIF\":2.8000,\"publicationDate\":\"2025-03-21\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Applied Physics A\",\"FirstCategoryId\":\"4\",\"ListUrlMain\":\"https://link.springer.com/article/10.1007/s00339-025-08451-9\",\"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":"Applied Physics A","FirstCategoryId":"4","ListUrlMain":"https://link.springer.com/article/10.1007/s00339-025-08451-9","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}
Comprehensive study of structural, optical, electrical, and magnetic properties of cobalt oxide nanoparticles synthesized via curd-based biogenic approach
This study presents a novel synthesis of Co₃O₄ nanoparticles derived from a natural bio-template approach via curd using an innovative sol-gel auto-combustion process. The proposed process utilizes curd’s bioactive components, eliminating the need for toxic chemicals and offering an environmentally friendly approach. The synthesized Co₃O₄ nanoparticles show excellent structural and optical properties, with a crystallite size of 27.31 nm from XRD analysis. FESEM and HRTEM imaging reveals a well-defined shapes spherical morphology with minimal agglomeration. The diffuse reflectance spectroscopy shows a dual band gap of 3.72 eV related to a direct transition and at 2.53 eV related to an indirect electronic transition. The photoluminescence spectra of the nanoparticles exhibit characteristic emission peaks, at 790.67 and 523.02 nm and it suggest a strong influence of quantum confinement effects. Sustainable synthesis gives highly pure nanoparticles with minimal environmental impact, suitable for catalysis, energy storage, and nanoelectronic applications.
期刊介绍:
Applied Physics A publishes experimental and theoretical investigations in applied physics as regular articles, rapid communications, and invited papers. The distinguished 30-member Board of Editors reflects the interdisciplinary approach of the journal and ensures the highest quality of peer review.