采用溶胶-凝胶法制备了NASICON(钠超离子导体)固体电解质材料.利用XRD分析了所制备材料的结构,材料的平均粒径约为22nm.以NASICON为离子导电层,Sm_2O_3为敏感电极制作了具有良好敏感特性的C_7H_8气体传感器.在430℃工作温度下,器件对(5-50)×10~(-6)C_7H_8的灵敏度为-75mV/decade.并且对C_7H_8具有较高的选择性和良好的响应恢复特性,器件对5 × 10~(-6)和50×10~(-6)C_7H_8的响应时间分别为45和35秒,恢复时间分别为8和60秒.对器件的敏感机理做以简要的分析.
NASICON(sodium super ionic conductor)solid electrolyte was prepared by sol-gel method.The structure of the material were analysized by XRD and mean grain size was 22nm.A toluene gas sensor with well sensing performance was fabricated using NASICON as the Ion conductive layer and samarium oxide as the sensing electrode.The sensitivity of the sensor to(5-50)×10~(-6) toluene was -75mV/decade at the operating temperature of 430℃.In addition,the sensor exhibited high selectivity and well response-recovery characteristic to toluene.The response time of the sensor to 5×10~(-6) and 50×10~(-6)toluene was 45 and 35 s.the recovery time was 8 and 60 s.The sensing mechanism of the sensor was in vestigated briefly.
参考文献
| [1] | Chen T Y;Li M J;Wang J L .Sub-Second Thermal Desorption of a Micro-Sorbent Trap for the Analysis of Ambient Volatile Organic Compounds[J].Journal of Chromatography A,2002,976:39-45. |
| [2] | 殷永泉,马桂霞,朱传友,李昌梅.毛细管气相色谱监测空气中苯、甲苯和二甲苯[J].实验室研究与探索,2005(04):25-27. |
| [3] | 张覃轶,谢长生,李登峰,张顺平,柏自奎.基于纳米ZnO气体传感器阵列的乙醇、丙酮、苯、甲苯、二甲苯的识别研究[J].传感技术学报,2006(03):552-554,558. |
| [4] | 季振国,孙兰侠,何振杰,范镓,王玮,方向生,陈裕泉.可鉴别室内有害气体的铟锡氧化物薄膜气敏特性研究[J].传感技术学报,2004(02):277-279. |
| [5] | 方向生,郭淼,陈文菊,潘敏,陈裕泉,张孝彬.碳纳米管及其修饰物对挥发性有机物气敏性的研究[J].传感技术学报,2006(05):2130-2134. |
| [6] | 陈金霞,郭淼,陈文菊,李昱,李婷,张孝彬,陈裕泉.基于多壁纳米碳管的传感器对甲苯的气敏性研究[J].传感技术学报,2005(01):39-42. |
| [7] | Tiegang Zhong;Baofu Quan;Xishuang Liang .SO_2-sensing characteristics of NASICON sensors with ZnSnO_3 sensing electrode[J].Materials Science & Engineering, B. Solid-State Materials for Advanced Technology,2008(2):127-132. |
| [8] | Xishuang Liang;Tiegang Zhong;Baofu Qaan et al.Solidstate potcntiometric SO_2 sensor combining NASICON with V2O5-doped TiO_2 electrode[J].Sensors and Actuators B:Chemical,2008,134:25-30. |
| [9] | Xishuang Liang;Yuehua He;Fengmin Liu;Biao Wang;Tiegang Zhong;Baofu Quan;Geyu Lu .Solid-state potentiometric H_2S sensor combining NASICON with Pr_6O_(11)-doped SnO_2 electrode[J].Sensors and Actuators, B. Chemical,2007(2):544-549. |
| [10] | Xishuang Liang;Fengmin Liu;Tiegang Zhong et al.Chlorine sensor combining NASICON with CaMs3(SiO_3)4-doped CdS electrode[J].Solid State Ionics,2008,179:1636-1640. |
| [11] | G Lu;N Miura;N Yamazoe .High-temperature sensors for NO and N0_2 based on stabilized zirconia and spinel -type oxide electrodes[J].Materials Chemistry,1997,7:1445-1449. |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%