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探索溶胶-凝胶合成的CaO:MgAlO纳米复合材料的多样应用：形态学、光催化及电化学视角

Exploring the diverse applications of sol-gel synthesized CaO:MgAlO nanocomposite: morphological, photocatalytic, and electrochemical perspectives.

作者信息

Jahnavi H K, Prasad S Rajendra, Nagaswarupa H P, Naik Ramachandra, Basavaraju N, Ravikumar C R, Goud Burragoni Sravanthi, Kim Jae Hong

机构信息

Department of Studies in Chemistry, Shivagangothri, Davangere University, Davanagere, 577007, India.

Department of Physics, New Horizon College of Engineering, Bangalore, 560103, India.

出版信息

Discov Nano. 2024 Sep 12;19(1):147. doi: 10.1186/s11671-024-04093-7.

DOI:10.1186/s11671-024-04093-7
PMID:39264511
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11393273/
Abstract

A nanocomposite of CaO:MgAlO was synthesized through a straightforward and cost-effective sol-gel method. The investigation of the novel CaO:MgAlO nanocomposite encompassed an examination of its morphological and structural alterations, as well as an exploration of its photocatalytic activities and electrochemical characteristics. XRD analysis revealed a nanocomposite size of 24.15 nm. The band gap, determined through UV studies, was found to be 3.83 eV, and scanning electron microscopy (SEM) illustrated flake-like morphological changes in the CaO:MgAlO samples. TEM, HRTEM, and SAED studies of a CaO:MgAlO nanocomposite would reveal important details about its morphology, crystallography, and nanostructure. Photocatalytic activity was quantified by studying the degradation of Acid Red-88 (AR-88) dye in a deionized solution, achieving a 70% dye degradation under UV irradiation in 120 min. Plant growth examinations were carried out using dye degraded water to test its suitability for agriculture. The electrochemical energy storage and sensing applications of the prepared nanocomposite were examined using CaO:MgAlO modified carbon paste electrode through cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS). In conclusion, the synthesized CaO:MgAlO nanocomposite demonstrated promising morphological and structural characteristics, efficient photocatalytic activity, and potential applications in electrochemical energy storage, highlighting its versatility for various technological and environmental applications.

摘要

通过一种简单且经济高效的溶胶 - 凝胶法合成了CaO:MgAlO纳米复合材料。对新型CaO:MgAlO纳米复合材料的研究包括对其形态和结构变化的考察，以及对其光催化活性和电化学特性的探索。XRD分析表明纳米复合材料的尺寸为24.15纳米。通过紫外研究确定的带隙为3.83电子伏特，扫描电子显微镜（SEM）显示了CaO:MgAlO样品中的片状形态变化。对CaO:MgAlO纳米复合材料进行TEM、HRTEM和SAED研究将揭示其形态、晶体学和纳米结构的重要细节。通过研究酸性红 - 88（AR - 88）染料在去离子溶液中的降解来量化光催化活性，在紫外光照射下120分钟内实现了70%的染料降解。使用染料降解水进行植物生长试验，以测试其对农业的适用性。通过循环伏安法（CV）和电化学阻抗谱（EIS），使用CaO:MgAlO修饰的碳糊电极研究了制备的纳米复合材料的电化学储能和传感应用。总之，合成的CaO:MgAlO纳米复合材料表现出有前景的形态和结构特征、高效的光催化活性以及在电化学储能方面的潜在应用，突出了其在各种技术和环境应用中的多功能性。

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