Synthesis and characterization of CeO2 nanoparticles using Plectranthus barbatus leaf extract and its CO gas sensing and antimicrobial activity

IF 2.7 4区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY Materials Letters Pub Date : 2024-11-04 DOI:10.1016/j.matlet.2024.137652

Huda Imran Ahemad , Ganesh Eknath Patil , Yogesh Bhaskar Aher , Momin Shoaib Malik , Laxmi Dilip Sonawane , Manoj Annasaheb More , Abhinay Subhash Mandawade , Dnyaneshwari Yuvraj Patil , Sarika Digambar Shinde , Gotan Hiralal Jain

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Abstract

In this study, we synthesized cerium oxide nanoparticles (CeO₂ NPs) using Plectranthus barbatus leaf extract. Characterization via X-ray diffraction (XRD), high-resolution transmission electron microscopy (HRTEM), and UV–visible spectroscopy revealed a bandgap of 2.98 eV. XRD confirmed their crystalline nature, while HRTEM showed cubic fluorite structures with an average particle size of 11.23 nm. The CeO₂ NPs exhibited antibacterial properties against both gram-positive and gram-negative bacteria and high sensitivity to carbon monoxide (CO) at 100 °C, especially at low concentrations. This research highlights the low environmental impact and potential applications of CeO₂ NPs in gas sensing and antibacterial contexts.

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利用鱼腥草叶提取物合成和表征 CeO2 纳米粒子及其 CO 气体传感和抗菌活性

在这项研究中，我们利用芒柄鱼叶提取物合成了氧化铈纳米粒子（CeO2 NPs）。通过 X 射线衍射 (XRD)、高分辨透射电子显微镜 (HRTEM) 和紫外-可见光谱进行表征，发现其带隙为 2.98 eV。XRD 证实了它们的结晶性质，而 HRTEM 则显示出平均粒径为 11.23 纳米的立方萤石结构。CeO2 NPs 对革兰氏阳性和革兰氏阴性细菌都具有抗菌特性，在 100 °C 下对一氧化碳 (CO) 具有高灵敏度，尤其是在低浓度下。这项研究强调了 CeO2 NPs 对环境的低影响以及在气体传感和抗菌方面的潜在应用。

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来源期刊

Materials Letters 工程技术-材料科学：综合

CiteScore

5.60

自引率

3.30%

发文量

1948

审稿时长

50 days

期刊介绍： Materials Letters has an open access mirror journal Materials Letters: X, sharing the same aims and scope, editorial team, submission system and rigorous peer review. Materials Letters is dedicated to publishing novel, cutting edge reports of broad interest to the materials community. The journal provides a forum for materials scientists and engineers, physicists, and chemists to rapidly communicate on the most important topics in the field of materials. Contributions include, but are not limited to, a variety of topics such as: • Materials - Metals and alloys, amorphous solids, ceramics, composites, polymers, semiconductors • Applications - Structural, opto-electronic, magnetic, medical, MEMS, sensors, smart • Characterization - Analytical, microscopy, scanning probes, nanoscopic, optical, electrical, magnetic, acoustic, spectroscopic, diffraction • Novel Materials - Micro and nanostructures (nanowires, nanotubes, nanoparticles), nanocomposites, thin films, superlattices, quantum dots. • Processing - Crystal growth, thin film processing, sol-gel processing, mechanical processing, assembly, nanocrystalline processing. • Properties - Mechanical, magnetic, optical, electrical, ferroelectric, thermal, interfacial, transport, thermodynamic • Synthesis - Quenching, solid state, solidification, solution synthesis, vapor deposition, high pressure, explosive