基于 MXene Ti3C2TX-NiCo2O4-MnO2 纳米复合材料的高响应和稳定的室温醋酸气体传感器

IF 5.8 2区材料科学 Q2 CHEMISTRY, PHYSICAL

Journal of Alloys and Compounds Pub Date : 2024-11-22 DOI:10.1016/j.jallcom.2024.177715

Ali Akhtar, Shama Sadaf, Rujun Zhou, Qiang Ling, Si Luo, Mingming Han, Wu Di, Jianqiao Liu, Daru Chen, Xiangfeng Chu

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引用次数: 0

摘要

设计新型醋酸气体传感器对人类健康至关重要。二维（2D）层状 MXene Ti3C2Tx 正成为气体传感领域一种新兴的、前景广阔的材料。本文采用水热法合成了以 Ti3C2Tx/Nb2CTx 为支撑的镍钴氧化物-二氧化锰复合材料和纯材料。通过 SEM、EDS、TEM、HRTEM、XRD、BET、FTIR、UV-visible、XPS 和 Raman 对样品的结构、化学成分和形貌进行了研究，证明了产品的成功合成。Ti3C2Tx 的层状结构提高了 BET 表面积，提供了足够的位点，有助于改善气体传感。利用合成的产品制作了气体传感器，并对不同种类的挥发性有机化合物进行了深度测试。结果表明，在室温下，Ti3C2Tx-NiCo2O4-MnO2（5% Ti3C2Tx=NCO-Mn-Ti-5）气体传感器对 20 ppm 乙酸的灵敏度很高，而对其他所有挥发性有机化合物（丙酮、TMA、乙醇、甲醇、甲醛、乙醛、乙炔和二甲苯）的灵敏度很低。对 20 ppm 乙酸的响应（Rg/Ra）为 12.5，最低检测限为 0.05 ppm。此外，NCO-锰-钛-5 传感器显示出极高的稳定性/可重复性，响应/恢复时间短，醋酸浓度与响应之间呈线性关系。新型传感器（NCO-Mn-Ti-5）的设计理念可能会在传感器领域大有用武之地。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Highly responsive and stable room temperature acetic acid gas sensor based on nano-composite of MXene Ti3C2TX-NiCo2O4-MnO2

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Highly responsive and stable room temperature acetic acid gas sensor based on nano-composite of MXene Ti3C2TX-NiCo2O4-MnO2

Designing novel acetic acid gas sensors is highly imperative for human health. Two-dimensional (2D) layered MXene Ti₃C₂T_x is becoming an emerging and promising material in gas sensing. In this manuscript, the hydrothermal method was used to synthesize MXenes Ti₃C₂T_x/Nb₂CT_x supported NiCo₂O₄-MnO₂ composites and pure materials. The structure, chemical composition and morphology of the samples were studied by SEM, EDS, TEM, HRTEM, XRD, BET, FTIR, UV-visible, XPS and Raman, justifying the successful synthesis of products. The layered structure of Ti₃C₂T_x enhanced the BET surface area and provided sufficient sites, which assisted the gas sensing improvement. The gas sensors were fabricated from synthesized products and were tested for different kinds of VOCs deeply. The results exposed that the gas sensor of Ti₃C₂T_x-NiCo₂O₄-MnO₂ (5% of Ti₃C₂T_x=NCO-Mn-Ti-5) was highly sensitive to 20 ppm acetic acid and very less responsive to all other VOCs (acetone, TMA, ethanol, methanol, formaldehyde, acetaldehyde, acetylene and xylene) at room temperature. The response (R_g/R_a) to 20 ppm acetic acid was 12.5 and the lowest detection limit was 0.05 ppm. Additionally, the sensor of NCO-Mn-Ti-5 revealed great stability/reproducibility, short response/recovery times and linearity between acetic acid concentration and response. The idea of the novel sensor (NCO-Mn-Ti-5) could be potentially useful in the field of sensors.

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来源期刊

Journal of Alloys and Compounds 工程技术-材料科学：综合

CiteScore

11.10

自引率

14.50%

发文量

5146

审稿时长

67 days

期刊介绍： The Journal of Alloys and Compounds is intended to serve as an international medium for the publication of work on solid materials comprising compounds as well as alloys. Its great strength lies in the diversity of discipline which it encompasses, drawing together results from materials science, solid-state chemistry and physics.