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

IF 2.8 4区 材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY
C. T. Anuradha, J. Jeyanthi
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引用次数: 0

摘要

本研究提出了一种新的合成Co₃O₄纳米颗粒的方法,该方法来源于天然生物模板,通过凝乳采用创新的溶胶-凝胶自燃烧工艺。拟议的工艺利用凝乳的生物活性成分,消除了对有毒化学物质的需求,并提供了一种环保的方法。合成的Co₃O₄纳米颗粒具有良好的结构和光学性能,XRD分析显示其晶粒尺寸为27.31 nm。FESEM和HRTEM成像显示形状明确的球形形貌和最小的团聚。漫反射光谱显示了3.72 eV的直接电子跃迁和2.53 eV的间接电子跃迁的双带隙。纳米粒子的光致发光光谱在790.67 nm和523.02 nm处表现出特征发射峰,表明量子约束效应对纳米粒子的光致发光有很强的影响。可持续合成提供了高纯度的纳米颗粒,对环境的影响最小,适用于催化,储能和纳米电子应用。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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.

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来源期刊
Applied Physics A
Applied Physics A 工程技术-材料科学:综合
CiteScore
4.80
自引率
7.40%
发文量
964
审稿时长
38 days
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.
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