金属有机骨架材料ZIF-8(I2)的湿敏性能研究
Humidity sensing properties of metal-organic framework materials of ZIF-8(I2)
采用甲醇为溶剂合成了ZIF-8(分子筛咪唑酯骨架化合物)纳米晶材料，将碘成功掺入其 (ZIF-8(I2)) 孔笼中。并且通过X射线衍射对ZIF-8进行了晶体结构表征，通过扫描电子显微镜对ZIF-8与ZIF-8(I2)进行了晶体形貌的表征。以ZIF-8(I2)为基体材料，采用涂膜法将其涂覆在Ag-Pd叉指电极上，制作成湿敏元件。对元件的湿敏性能进行测试，并且分析了ZIF-8(I2)的感湿机理。结果表明，中高湿条件下，元件阻抗随湿度变化的曲线有良好的线性关系，响应时间仅为25 s，湿滞约为7%。
ZIF-8 (zeolitic imidazolate frameworks) nanocrystals were synthesized using methanol as solvent, of which pores were successfully doped in with I2(ZIF-8(I2)). The crystal structure of ZIF-8 was characterized by X-ray diffraction (XRD), and the morphology of ZIF-8 and ZIF-8(I2) was observed by scanning electron microscope (SEM). Then ZIF-8(I2) humidity sensor was fabricated by coating the nanocrystal materials on Ag-Pd interdigitated electrodes. The device shows a good impedance-RH (relative humidity) relationship, and humidity sensing properties of the sensor based on ZIF-8(I2) were explored. Besides, complex impedance at different RHs was characterized to study sensing mechanism of ZIF-8(I2). The results indicate that the materials show high sensitivity at high relative humidity (RH), response time is 25 s, and humidity hysteresis is about 7%.
程鑫、刘彩霞、阮圣平、王广平、张莹、陆斌武、张宇鹏
材料科学化学晶体学
纳米晶ZIF-8(I2)湿敏性能感湿机理
nanocrystalsZIF-8(I2)humidity sensing propertyhumidity sensing mechanism
程鑫,刘彩霞,阮圣平,王广平,张莹,陆斌武,张宇鹏.金属有机骨架材料ZIF-8(I2)的湿敏性能研究[EB/OL].(2013-05-15)[2025-08-02].http://www.paper.edu.cn/releasepaper/content/201305-220.点此复制
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