材料科学
纳米发生器
摩擦电效应
薄膜
纳米复合材料
二氧化氮
静电纺丝
三元运算
光电子学
纳米纤维
纳米技术
化学工程
复合材料
聚合物
压电
工程类
有机化学
化学
程序设计语言
计算机科学
作者
Weiwei Wang,Dongyue Wang,Xixi Zhang,Chunqing Yang,Dongzhi Zhang
出处
期刊:Nanomaterials
[MDPI AG]
日期:2022-12-01
卷期号:12 (23): 4274-4274
被引量:8
摘要
This paper introduces a high-performance self-powered nitrogen dioxide gas sensor based on Pd-modified ZnO/MoSe2 nanocomposites. Poly(vinyl alcohol) (PVA) nanofibers were prepared by high-voltage electrospinning and tribological nanogenerators (TENGs) were designed. The output voltage of TENG and the performance of the generator at different frequencies were measured. The absolute value of the maximum positive and negative voltage exceeds 200 V. Then, the output voltage of a single ZnO thin-film sensor, Pd@ZnO thin-film sensor and Pd@ZnO/MoSe2 thin-film sensor was tested by using the energy generated by TENG at 5 Hz, when the thin-film sensor was exposed to 1–50 ppm NO2 gas. The experimental results showed that the sensing response of the Pd@ZnO/MoSe2 thin-film sensor was higher than that of the single ZnO film sensor and Pd@ZnO thin-film sensor. The TENG-driven response rate of the Pd@ZnO/MoSe2 sensor on exposure to 50 ppm NO2 gas was 13.8. At the same time, the sensor had good repeatability and selectivity. The synthetic Pd@ZnO/MoSe2 ternary nanocomposite was an ideal material for the NO2 sensor, with excellent structure and performance.
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