基于室温离子液体的肼蒸气传感器  

Hydrazine gas sensors based on room-temperature ionic liquid

作　　者：孙洁[1] 李艳[1] 冯依玲[1] 王荣[1] 吴霞琴[1] 

机构地区：[1]上海师范大学生命与环境科学学院,上海200234

出　　处：《化学传感器》2009年第3期34-37,共4页Chemical Sensors

基　　金：国家自然科学基金(20503016);上海市科委启明星基金(07QA14044);上海市科学技术委员会自然科学基金(04ZR14014);上海市教育委员会科学项目(04DC29);湖南大学生物传感与计量学国家重点实验室开放基金

摘　　要：利用电化学循环伏安法研究了水合肼蒸气在室温离子液体BmimPF6中的电化学行为,测得其在0.94V处可以被电化学氧化,且该氧化峰电流受肼在BmimPF6中的扩散所控制并推算出其氧化反应电子数为0.8。在此基础上,构建了以BmimPF6为电解质的准固态肼蒸气电化学气体传感器。该传感器对浓度范围为1.1～25.4μmol/L的水合肼蒸气呈线性响应。同时,该传感器也表现出了良好的稳定性与重复性。The electrochemical behavior of hydrazine in room temperature ionic liquid （BmimPF6） was studied by cyclic voltammetry. Results suggested that hydrazine could be oxidized at the potential of 0.94 V with the electron number of 0.8. The electrochemical reaction was under the diffusion control of hydrazine in BmimPF6. And also, an electrochemical hydrazine gas sensor, using BmimPF6 thin films as the electrolyte, was fabricated. The sensor showed a linear response to the hydrazine gas concentrations in the range of 1.1 - 25.4 μmol/L, with a good stability and reproducibility.

关 键 词：离子液体 水合肼 气体传感器 电化学 

分 类 号：TP212.2[自动化与计算机技术—检测技术与自动化装置]