Unveiling the Potential of Zn-MOF/GO Nanoarchitectures for Highly Sensitive and Stable Ammonia Sensing at Ambient Conditions

IF 2.2 4区工程技术 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC Journal of Electronic Materials Pub Date : 2024-10-15 DOI:10.1007/s11664-024-11506-x

Zakaria M. Ali, Mohamed E. El Sayed, Ahmed Samir, Mohammad N. Murshed

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Abstract

This work reports the synthesis and characterization of a zinc-based metal–organic framework (Zn-MOF) and its nanocomposite with graphene oxide (GO) for room-temperature ammonia (NH₃) sensing. The Zn-MOF/GO nanocomposite was prepared via an innovative solvothermal approach and comprehensively characterized using x-ray diffraction, UV–visible spectroscopy, Fourier transform infrared (FTIR) spectroscopy, Raman spectroscopy, and thermogravimetric analysis. The nanocomposite demonstrated exceptional NH₃ sensing performance at ambient conditions, exhibiting a linear response from 20 ppm to 220 ppm, a significant 13.2% response towards 100 ppm NH₃, and rapid response/recovery times of 102/127 s. Notably, the sensor maintained long-term stability, with 12.4% average sensitivity over 50 days. The synergistic effects between GO and Zn-MOF components, coupled with the high surface area and porous structure, contributed to the superior sensing characteristics. A strong linear correlation (R² = 0.9906) between sensor response and NH₃ concentration enabled precise quantitative detection. This study not only introduces a novel material for NH₃ sensing but also provides crucial insights into the structure–property relationships governing nanocomposite gas sensors. The findings open new avenues for designing high-performance chemiresistive gas sensors operating at ambient conditions, with potential applications in environmental monitoring and industrial safety.

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揭示Zn-MOF/GO纳米结构在环境条件下高度敏感和稳定的氨传感的潜力

本研究报告了一种锌基金属有机框架（Zn-MOF）及其与氧化石墨烯（GO）的纳米复合材料的合成与表征，用于室温氨（NH3）传感。Zn-MOF/GO 纳米复合材料是通过创新的溶热法制备的，并利用 X 射线衍射、紫外可见光谱、傅立叶变换红外光谱、拉曼光谱和热重分析对其进行了全面表征。该纳米复合材料在环境条件下表现出卓越的 NH3 传感性能，在 20 ppm 到 220 ppm 的范围内表现出线性响应，对 100 ppm NH3 的响应为 13.2%，快速响应/恢复时间为 102/127 s。GO 和 Zn-MOF 成分之间的协同效应，再加上高表面积和多孔结构，造就了其卓越的传感特性。传感器响应与 NH3 浓度之间具有很强的线性相关性（R2 = 0.9906），从而实现了精确的定量检测。这项研究不仅介绍了一种新型的 NH3 传感材料，还对纳米复合气体传感器的结构-性能关系提供了重要的见解。这些发现为设计在环境条件下工作的高性能化学电阻式气体传感器开辟了新途径，有望应用于环境监测和工业安全领域。

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来源期刊

Journal of Electronic Materials 工程技术-材料科学：综合

CiteScore

4.10

自引率

4.80%

发文量

693

审稿时长

3.8 months

期刊介绍： The Journal of Electronic Materials (JEM) reports monthly on the science and technology of electronic materials, while examining new applications for semiconductors, magnetic alloys, dielectrics, nanoscale materials, and photonic materials. The journal welcomes articles on methods for preparing and evaluating the chemical, physical, electronic, and optical properties of these materials. Specific areas of interest are materials for state-of-the-art transistors, nanotechnology, electronic packaging, detectors, emitters, metallization, superconductivity, and energy applications. Review papers on current topics enable individuals in the field of electronics to keep abreast of activities in areas peripheral to their own. JEM also selects papers from conferences such as the Electronic Materials Conference, the U.S. Workshop on the Physics and Chemistry of II-VI Materials, and the International Conference on Thermoelectrics. It benefits both specialists and non-specialists in the electronic materials field. A journal of The Minerals, Metals & Materials Society.