Assembling MOF on CNTs into 0D-1D heterostructures for enhanced volatile organic compounds detection.

IF 5.6 1区化学 Q1 CHEMISTRY, ANALYTICAL

Talanta Pub Date : 2025-04-01 Epub Date: 2024-12-20 DOI:10.1016/j.talanta.2024.127444

Jiabao Ding, Junlong Qiao, Zichen Zheng, Zihao Song, Shumei Ding, Junhao Luo, Feihong Wang, Fengchao Li, Hongpeng Li

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引用次数: 0

Abstract

The rapid advancement of the Internet of Things has created a substantial demand for portable gas sensors. Nevertheless, the development of gas sensors that can fulfill the demanding criteria of high sensitivity and rapid response time continues to pose a considerable challenge. Herein, an in-situ anchoring strategy is proposed to construct CNTs@MOF heterostructure to establish strong electronic coupling and charge relocation for enhancing the monitoring capabilities of isopropanol (freshness markers for fruits) at room temperature. The in-situ anchoring process prevents Zn-MOF (ZIF-8) self-aggregation, ensuring efficient transport channels for target analytes and enhancing active site utilization. Moreover, the synergistic effect of each component in the composite is optimized. Consequently, the gas sensor based on the CNTs@ZIF-8 heterostructure achieved an ultrahigh isopropanol response of 57.87 (40 ppm, R_a/R_g) at room temperature and 60% relative humidity, exhibiting rapid response kinetics (38 s, 30 ppm) and durability. This study offers a fresh perspective on the structural design of oxygen-inert CNTs materials.

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将碳纳米管上的MOF组装成0D-1D异质结构，以增强挥发性有机化合物的检测。

物联网的快速发展创造了对便携式气体传感器的大量需求。然而，开发能够满足高灵敏度和快速响应时间要求的气体传感器仍然是一个相当大的挑战。本文提出原位锚定策略，构建CNTs@MOF异质结构，建立强电子耦合和电荷重定位，提高室温下异丙醇（水果的新鲜度标志）的监测能力。原位锚定过程可防止Zn-MOF （ZIF-8）自聚集，确保目标分析物的有效运输通道，提高活性位点的利用率。优化了复合材料中各组分的协同效应。因此，基于CNTs@ZIF-8异质结构的气体传感器在室温和60%相对湿度下实现了57.87 （40 ppm, Ra/Rg）的超高异丙醇响应，具有快速响应动力学（38 s, 30 ppm）和耐用性。该研究为氧惰性碳纳米管材料的结构设计提供了新的视角。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Talanta 化学-分析化学

CiteScore

12.30

自引率

4.90%

发文量

861

审稿时长

29 days

期刊介绍： Talanta provides a forum for the publication of original research papers, short communications, and critical reviews in all branches of pure and applied analytical chemistry. Papers are evaluated based on established guidelines, including the fundamental nature of the study, scientific novelty, substantial improvement or advantage over existing technology or methods, and demonstrated analytical applicability. Original research papers on fundamental studies, and on novel sensor and instrumentation developments, are encouraged. Novel or improved applications in areas such as clinical and biological chemistry, environmental analysis, geochemistry, materials science and engineering, and analytical platforms for omics development are welcome. Analytical performance of methods should be determined, including interference and matrix effects, and methods should be validated by comparison with a standard method, or analysis of a certified reference material. Simple spiking recoveries may not be sufficient. The developed method should especially comprise information on selectivity, sensitivity, detection limits, accuracy, and reliability. However, applying official validation or robustness studies to a routine method or technique does not necessarily constitute novelty. Proper statistical treatment of the data should be provided. Relevant literature should be cited, including related publications by the authors, and authors should discuss how their proposed methodology compares with previously reported methods.