A Novel Sensor for the Detection of n-Butanol Based on CoMn2O4 Nanoparticles

IF 2.1 4区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Electronic Materials Letters Pub Date : 2024-05-13 DOI:10.1007/s13391-024-00498-9

Juan Pablo Morán-Lázaro, Maykel Courel-Piedrahita, Alex Guillén-Bonilla, Florentino López-Urías, Héctor Guillén-Bonilla, Víctor Manuel Soto-García, Aldo Palafox-Corona, David Alberto Hernández-Poot

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Abstract

In this paper, we studied the alcohol-sensing properties of CoMn₂O₄ nanoparticles for the first time. The CoMn₂O₄ nanoparticles were prepared via a simple microwave-assisted colloidal method using cobalt nitrate, manganese nitrate, dioctyl sulfosuccinate sodium salt, and ethylene glycol as a solvent. Various techniques were used to characterize the structural, morphological, and optical properties of CoMn₂O₄. The crystal structure of CoMn₂O₄ was found after calcination at a temperature of 400 °C. The Raman spectrum showed seven vibrational bands, while the optical absorption spectrum showed three bands, confirming the spinel CoMn₂O₄. Morphological analysis revealed that the porous microstructure of CoMn₂O₄ was composed of nanoparticles with a size distribution of 16 to 58 nm. Gas sensors were fabricated with the CoMn₂O₄ powders calcined at 400 °C using the brush-coating method, and experimental results showed that CoMn₂O₄ nanoparticles were more sensitive to n-butanol than isopropanol and ethanol at an operating temperature of 185 °C. The CoMn₂O₄ sensor showed a response of 6.6 at 50 ppm n-butanol with good stability, reproducibility, and repeatability. The present article provides a new sensing material that could be used as an n-butanol sensor with significant benefits for human health.

Graphical Abstract

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基于 CoMn2O4 纳米粒子的新型正丁醇检测传感器

本文首次研究了 CoMn2O4 纳米粒子的酒精感应特性。以硝酸钴、硝酸锰、磺基琥珀酸二辛酯钠盐和乙二醇为溶剂，通过简单的微波辅助胶体法制备了 CoMn2O4 纳米粒子。研究人员采用多种技术对 CoMn2O4 的结构、形态和光学特性进行了表征。在 400 °C 温度下煅烧后，发现了 CoMn2O4 的晶体结构。拉曼光谱显示了 7 条振动带，而光学吸收光谱显示了 3 条带，证实了尖晶石 CoMn2O4 的存在。形态分析表明，CoMn2O4 的多孔微结构由尺寸分布为 16 至 58 纳米的纳米颗粒组成。实验结果表明，在工作温度为 185 ℃ 时，CoMn2O4 纳米粒子对正丁醇的灵敏度高于异丙醇和乙醇。CoMn2O4 传感器在 50 ppm 正丁醇浓度下的响应为 6.6，具有良好的稳定性、再现性和重复性。本文提供了一种可用作正丁醇传感器的新型传感材料，对人类健康大有裨益。

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来源期刊

Electronic Materials Letters 工程技术-材料科学：综合

CiteScore

4.70

自引率

20.80%

发文量

审稿时长

2.3 months

期刊介绍： Electronic Materials Letters is an official journal of the Korean Institute of Metals and Materials. It is a peer-reviewed international journal publishing print and online version. It covers all disciplines of research and technology in electronic materials. Emphasis is placed on science, engineering and applications of advanced materials, including electronic, magnetic, optical, organic, electrochemical, mechanical, and nanoscale materials. The aspects of synthesis and processing include thin films, nanostructures, self assembly, and bulk, all related to thermodynamics, kinetics and/or modeling.