基于UIO-66-NH2/V2CTx MXene薄膜的多功能QCM传感器检测甲醛气体及呼吸行为

IF 3.7 1区化学 Q1 CHEMISTRY, ANALYTICAL

Sensors and Actuators B: Chemical Pub Date : 2025-09-19 DOI:10.1016/j.snb.2025.138804

Dongyue Wang , Mujie Xu , Dongzhi Zhang , Qian Mi , Dunwei Gong , Yanping Zhou , Haiting Wang , Xuzhao Zhang , Kangrui Gong , Runze Zhang , Liping Zhang

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引用次数: 0

摘要

本文制备了一种基于uuo -66- nh2 /V2CTx纳米复合材料修饰的石英晶体微天平（QCM）气体传感器，用于甲醛检测。在V2CTx MXene表面原位合成UIO-66-NH2制备复合材料。将敏感层喷涂到QCM表面制备气体传感器。uuo -66- nh2 /V2CTx传感器在室温下对甲醛具有高灵敏度（13.26 Hz/ppm）、短响应/恢复时间（21/27 s）和低检出限（100 ppb）的特点。通过UIO-66-NH2/V2CTx的特殊官能团和Langmuir吸附模型解释了该传感器对甲醛的敏感性和吸附行为。此外，通过设置合适的参考传感器，降低了湿度变化引起的检测误差。该传感器还可用于检测人体呼吸行为。通过决策树模型将传感器数据智能分类为6种呼吸模式，准确率达97.7%，可用于辅助筛查人类疾病。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Multifunctional QCM sensor based on UIO-66-NH2/V2CTx MXene films for detection of formaldehyde gas and respiratory behavior

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Multifunctional QCM sensor based on UIO-66-NH2/V2CTx MXene films for detection of formaldehyde gas and respiratory behavior

In this work, a gas sensor based on a quartz crystal microbalance (QCM) modified with UIO-66-NH₂/V₂CT_x nanocomposite was prepared for the formaldehyde detection. The composite material was fabricated by in-situ synthesis of UIO-66-NH₂ on the surface of V₂CT_x MXene. The sensitive layer was sprayed onto the QCM surface to prepare the gas sensor. The UIO-66-NH₂/V₂CT_x sensor exhibited a high sensitivity (13.26 Hz/ppm), short response/recovery time (21/27 s) and low detection limit (100 ppb) to formaldehyde at room temperature. The sensitivity and adsorption behavior of this sensor towards formaldehyde were explained through the special functional groups of UIO-66-NH₂/V₂CT_x and the Langmuir adsorption model. Furthermore, the detection errors caused by humidity variations were reduced by setting the appropriate reference sensor. The fabricated sensor can also be used to detect human breathing behavior. The sensor data were intelligently classified into six breathing patterns through the decision tree model, with an accuracy rate of 97.7 %, which can be used for auxiliary screening of human diseases.

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来源期刊

Sensors and Actuators B: Chemical 工程技术-电化学

CiteScore

14.60

自引率

11.90%

发文量

1776

审稿时长

3.2 months

期刊介绍： Sensors & Actuators, B: Chemical is an international journal focused on the research and development of chemical transducers. It covers chemical sensors and biosensors, chemical actuators, and analytical microsystems. The journal is interdisciplinary, aiming to publish original works showcasing substantial advancements beyond the current state of the art in these fields, with practical applicability to solving meaningful analytical problems. Review articles are accepted by invitation from an Editor of the journal.