华北理工大学化学工程学院
纸质出版:2023
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李萌萌, 孙依帆, 于梦梦, 等. 基于NiO/Bi2O3敏感电极的NH3传感器[J]. 传感器与微系统, 2023,(1):43-45+54.
李萌萌, 孙依帆, 于梦梦, 等. 基于NiO/Bi2O3敏感电极的NH3传感器[J]. 传感器与微系统, 2023,(1):43-45+54. DOI: 10.13873/J.1000-9787(2023)01-0043-03.
以均相沉淀法制备的氧化镍(NiO)为原料,采用溶胶—凝胶法进一步制备了具有异质结构的NiO/Bi
2
O
3
复合敏感电极材料。采用了X射线衍射(XRD)、扫描电子显微镜(SEM)和透射电子显微镜(TEM)对合成的复合材料进行了表征。以钇稳定氧化锆(YSZ)作为固体电解质,具有异质结构的NiO/Bi
2
O
3
为敏感电极制备了混合位型NH
3
传感器,并在550~650℃温度范围内对传感器响应—恢复特性进行了测试。材料表征结果为:采用溶胶凝胶法合成的复合材料为NiO和Bi
2
O
3
其微观形貌为片状结构,尺寸为100~200 nm
并且NiO和Bi
2
O
3
之间有异质结构的生成。响应—恢复特性曲线结果表明:以具有异质结构的NiO/Bi
2
O
3
为敏感电极的传感器,在550~650℃温度范围内对NH
3
表现出很好的敏感性能,NH
3
体积分数的对数和响应电位之间存在良好的线性关系。
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