摘要
利用化学氧化法制备的聚苯胺(PANI)和溶胶-凝胶法制备的BaCe0.9Gd0.1O3-δ(BCG)粉体,采用直接分散法制备了PANI/BCG复合材料。通过XRD、FTIR和TEM对所制产物进行了表征,并且利用气敏元件测试系统研究了PANI/BCG复合材料的氨敏性能。结果发现,BCG粒子在PANI中分散性良好,PANI/BCG复合材料在室温下对氨气表现出良好的气敏性,对体积分数100×10–6的氨气的灵敏度达到20,并且选择性好,性能稳定,适于在较宽的浓度范围内对氨气进行检测。
Polyaniline（PANI） and BaCe0.9Gd0.1O3–δ（BCG） were prepared by chemical-oxidation and sol-gel method,respectively.PANI/BCG composites were prepared by direct dispersion method.The prepared products were characterized through XRD,FTIR and TEM,and the gas sensitivity of PANI/BCG composites to NH3 was also studied by using test system for gas sensor.The results show that BCG particles show good dispersion in PANI powder.PANI/BCG composites show good sensitivity to NH3 at room temperature and the sensitivity is 20 for NH3（volume fraction： 100×10–6）;at the same time,the selectivity and stability are both very good.So that PANI/BCG composites could detect NH3 at a wide concentration range.
出处
《电子元件与材料》
CAS
CSCD
北大核心
2013年第1期27-30,共4页
Electronic Components And Materials
