Polypyrrole-Coated SnO2 Hollow Spheres and Their Application for Ammonia Sensor
Polypyrrole-Coated SnO2 Hollow Spheres and Their Application for Ammonia Sensor
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DOI：
10.1021/jp8096633
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发表时间：
2009-01
影响因子：
3.7
通讯作者：
Jun Zhang;Shurong Wang;M. Xu;Yan Wang;H. Xia;Shoumin Zhang;Xianzhi Guo;Shihua Wu
中科院分区：
文献类型：
--
作者：
Jun Zhang;Shurong Wang;M. Xu;Yan Wang;H. Xia;Shoumin Zhang;Xianzhi Guo;Shihua Wu
在存在准备准备的SNO2空心球体的情况下，在吡咯单体的原位聚合中合成了多吡咯座的SNO2空心球体杂种材料。通过透射电子显微镜（TEM），扫描电子显微镜（SEM），X射线衍射（XRD），傅立叶变换红外光谱仪（FTIR）和热重分析（TG）来表征杂种。实验数据显示，杂种中存在某些协同相互作用，可能导致多吡咯层涂层的热稳定性增强。气感应测试表明，杂种在室温下具有非常快速的反应和对氨气的高灵敏度，这意味着其潜在的气体传感器应用。
Polypyrrole-coated SnO2 hollow spheres hybrid materials have been synthesized through an in situ polymerization of pyrrole monomers in the presence of preprepared SnO2 hollow spheres. The hybrids were characterized by transmission electron microscopy (TEM), scanning electron microscopy (SEM), X-ray diffraction (XRD), Fourier transform infrared spectrometer (FTIR), and thermogravimetric analysis (TG). Experimental data showed certain synergetic interaction existed in the hybrids, probably resulting in the enhanced thermal stability of polypyrrole coatings. Gas sensing tests showed that the hybrids possessed very fast response and high sensitivity to ammonia gas at room temperature, implying its potential application for gas sensors.