Ethylene glycol is odorless and harmful to humans. Each year, a large number of fatal cases are caused by ethylene glycol poisoning. Therefore, rapid identification of ethylene glycol is crucial. In this study, clay-like TiCT MXene exhibits a larger interlayer spacing compared to accordion-like TiCT MXene, which enhances the gas diffusion channels. Nitrogen doping can increase the active sites of clay-like TiCT MXene. The introduction of nitrogen-doped carbon nanotubes into N-TiCT was carried out to enhance selectivity towards ethylene glycol, leading to the formation of N-TiCT MXene/N-CNTs. The N-TiCT MXene/N-CNTs exhibits significant selectivity towards the ethylene glycol at room temperature. Meanwhile, the detection limit was 0.3484 ppm, with a shortened response/recovery time of 10.57/6.29 s. Meanwhile, the ethylene glycol sensor device has been prepared through custom-made circuit boards and sensing programs. Moreover, the adsorption and oxidation process of ethylene glycol on N-TiCT MXene/N-CNTs was explored through in-situ infrared spectroscopy testing. This study revealed that the oxygen vacancies on the surface of N-TiCT MXene/N-CNTs play a crucial role in the oxidative catalytic detection of ethylene glycol. The strategy of N-TiCT MXene/N-CNTs provides a new avenue for the detection of ethylene glycol.

中文翻译：

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N掺杂粘土状Ti3C2Tx MXene/N掺杂碳纳米管复合材料用于环境空气和呼出气中的乙二醇检测


乙二醇无味，对人体有害。每年都有大量的死亡病例是由乙二醇中毒引起的。因此，快速鉴定乙二醇至关重要。在这项研究中，与手风琴状 TiCT MXene 相比，粘土状 TiCT MXene 表现出更大的层间距，从而增强了气体扩散通道。氮掺杂可以增加粘土状 TiCT MXene 的活性位点。将氮掺杂碳纳米管引入 N-TiCT 中以增强对乙二醇的选择性，从而形成 N-TiCT MXene/N-CNT。 N-TiCT MXene/N-CNT 在室温下对乙二醇表现出显着的选择性。同时，检测限为0.3484 ppm，响应/恢复时间缩短为10.57/6.29 s。同时，通过定制电路板和传感程序制备了乙二醇传感器装置。此外，通过原位红外光谱测试探索了乙二醇在N-TiCT MXene/N-CNTs上的吸附和氧化过程。本研究表明，N-TiCT MXene/N-CNT 表面的氧空位在乙二醇的氧化催化检测中发挥着至关重要的作用。 N-TiCT MXene/N-CNTs策略为乙二醇的检测提供了新途径。