用于传感 DMF 的多级分层自组装 ZnIn2S4/ZnO 柔性室温传感器

IF 3.8 2区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY Vacuum Pub Date : 2024-10-02 DOI:10.1016/j.vacuum.2024.113709

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引用次数: 0

摘要

由于 N, N-二甲基甲酰胺（DMF）对人体组织有害，因此开发柔性室温（FRT）传感器的要求很高。本文采用溶热法合成了 ZnIn2S4 (ZIS)，然后构建了 ZIS/ZnO 纳米复合材料。XRD 和 SEM 证实纳米花状 ZIS 是由高化学活性 (110) 纳米片自组装而成。气体感应测量结果表明，ZIS/ZnO FRT 传感器具有出色的选择性（100 ppm DMF，78.35%）和循环稳定性，比 ZnO 传感器提高了约 39 倍。此外，在以 45°弯曲 360 次后，响应仅降低 5.43%，15 天后传感器的响应值为 72.02%。传感特性的改善可归因于比表面积的增加（61.09 克/平方厘米）、线性欧姆接触和异质纳米结的协同效应。创新的材料设计为提高氧化锌基 FRT 传感器的 DMF 检测效率提供了参考。

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Multi-stage hierarchical self-assembled ZnIn2S4/ZnO flexible room temperature sensor for DMF sensing

It's demanding to exploit flexible room temperature (FRT) sensors due to the hazardous effects of N, N-dimethylformamide (DMF) on human tissues. In this paper, ZnIn₂S₄ (ZIS) is synthesised by solvothermal method, followed by the construction of ZIS/ZnO nanocomposites. The XRD and SEM confirm nanoflower-like ZIS is self-assembled from highly chemically active (110) nanosheets. The gas-sensing measurements indicate that the ZIS/ZnO FRT sensor exhibits excellent selectivity (100 ppm DMF, 78.35 %) and cycling stability, which is approximately a 39-fold improvement over ZnO sensor. In addition, the response decreases by only 5.43 % after 360 bends at 45°, and the response value of the sensor after 15 days is 72.02 %. The improved sensing characteristics can be attributed to the synergistic effect of increased specific surface area (61.09 g/cm²), linear ohmic contact and hetero-nanojunctions. The innovative material design provides a reference for improving the DMF detection efficiency of ZnO-based FRT sensor.

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来源期刊

Vacuum 工程技术-材料科学：综合

CiteScore

6.80

自引率

17.50%

发文量

审稿时长

34 days

期刊介绍： Vacuum is an international rapid publications journal with a focus on short communication. All papers are peer-reviewed, with the review process for short communication geared towards very fast turnaround times. The journal also published full research papers, thematic issues and selected papers from leading conferences. A report in Vacuum should represent a major advance in an area that involves a controlled environment at pressures of one atmosphere or below. The scope of the journal includes: 1. Vacuum; original developments in vacuum pumping and instrumentation, vacuum measurement, vacuum gas dynamics, gas-surface interactions, surface treatment for UHV applications and low outgassing, vacuum melting, sintering, and vacuum metrology. Technology and solutions for large-scale facilities (e.g., particle accelerators and fusion devices). New instrumentation ( e.g., detectors and electron microscopes). 2. Plasma science; advances in PVD, CVD, plasma-assisted CVD, ion sources, deposition processes and analysis. 3. Surface science; surface engineering, surface chemistry, surface analysis, crystal growth, ion-surface interactions and etching, nanometer-scale processing, surface modification. 4. Materials science; novel functional or structural materials. Metals, ceramics, and polymers. Experiments, simulations, and modelling for understanding structure-property relationships. Thin films and coatings. Nanostructures and ion implantation.