新型CO₂气敏元件的研究

来源期刊：中南大学学报(自然科学版)1999年第6期

论文作者：刘业翔 赖延清 廖波

文章页码：551 - 554

关键词：气敏元件; CO₂气体检测;CuO-BaTiO₃复合氧化物

Key words：gas sensitive element; CO₂ detection; CuO BaTiO ₃ complex oxides

摘    要：利用纳米技术和半导化技术，制备了CuO-BaTiO₃复合氧化物电子陶瓷电容型CO₂气敏元件，该元件可用于环境中CO₂气体的监测．该元件在127～427 ℃范围，对CO₂气体呈现较好的敏感特性；可测气体浓度范围0～95%（ 体积分数，下同），在低浓度范围（0～5%）内，电容与浓度呈线性关系；能经受高浓度CO₂气流的冲击，有较快的响应恢复速度；重现性和选择性较好；是一种很有发展前途的CO₂气敏元件．

Abstract: A novel gas sensitive element for detecting environmental CO₂ was developed. Nanometer and semiconductorization techniques were employed to prepare the CuO-BaTiO₃ complex oxides used to manufacture electronic ceramic capacitance type sensitive element for detecting CO₂. Results show that the element possesses excellent CO₂ sensitivity in the temperature range 127～427 ℃. The detectable CO₂ concentration is 0～95%, and the capacitance measured varies linearly with the CO₂ concentration in the low concentration range(0～5% CO₂). Excellent selectivity, good repeatability, rapid responsibility and rapid recoverability are also observed.