摩擦电效应
丙酮
材料科学
纳米颗粒
X射线光电子能谱
聚二甲基硅氧烷
化学工程
纳米发生器
纳米技术
纳米片
分析化学(期刊)
复合材料
色谱法
化学
有机化学
工程类
压电
作者
Bohao Liu,Guangzhong Xie,Huiling Tai,Yuanjie Su,Yadong Jiang
出处
期刊:International Conference on Optoelectronic and Microelectronic Technology and Application
日期:2020-12-04
摘要
In this work, an acetone sensor enabled by a vertical contact-separate mode triboelectric nanogenerator (TENG) was proposed. Using a combined coacervation/precipitation synthesis and spray coating method, chitosan nanoparticle decorated tungsten disulfide nanosheet (CS-NP/WS2-NS) that acted both as the triboelectric and sensing film was prepared and then assembled with microstructure-decorated polydimethylsiloxane (PDMS) film to obtain triboelectric acetone sensor. For comparison, CS-NP based sensor was prepared through the same method. The morphology and chemical properties of the fabricated sensors based on CS-NP and CS-NP/WS2-NS film were characterized by SEM, FTIR and XPS, respectively. Combined the contact separation between CS-NP/WS2-NS sensing film and PDMS with the electrostatic induction, the output signals were produced by the flow of induced charge between the electrodes. Results indicated that the CS-NP/WS2-NS based sensor exhibited a higher response (26.70%) toward 10 ppm of acetone compared to the CS-NP based sensor (7.12%). Meanwhile, both the two sensors held a linear response towards 2-10 ppm acetone (correlation coefficients are 0.9661 and 0.8518, respectively). In conclusion, the CS-NP/WS2-NS gas sensor has great potential in the applications of acetone detection without additional power supplies and provides a useful strategy for the researches of novel acetone sensors enabled by triboelectric effect.
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