基于PB-TNTs复合材料的偏二甲肼电流传感器研究  

Study on UDMH current sensor based on PB-TNTs composites

作　　者：董超 任向红 胡莉军 

机构地区：[1]火箭军工程大学五系,西安710025

出　　处：《分析试验室》2016年第11期1359-1364,共6页Chinese Journal of Analysis Laboratory

摘　　要：在偏二甲肼（UDMH）的氧化中使用普鲁士蓝（DB）作为合适的电子转移调节剂,利用Ti O2纳米管特殊的物理和化学性质,以Ti O2纳米管为普鲁士蓝载体,将制备的PB-Ti O2纳米管复合材料修饰玻碳电极,以玻碳电极作为工作电极,可以很好的应用在UDMH的电催化氧化上。通过SEM观察复合材料的外表特征,利用循环伏安技术,观察PB-TNTs/GCE的电化学行为和UDM H在工作电极上的电化学响应,评估PB-T NT s/GCE对UDM H溶液浓度测定的可靠性。结果表明,PB作为促进UDMH氧化的催化剂,Ti O2作为普鲁士蓝的载体,分析检测UDMH溶液时修饰玻碳电极将展现良好的稳定性,利用电流测定法得出线性范围为0.2×10-3~60×10-3g/L,检测限为2.4×10-5g/L。Prussian Blue titania nanotubes special used to modify a （PB） is a suitable modifier for electron transfer in the oxidation of UDMH. In virtue of physical and chemical properties, PB-titania nanotubes composite was constructed and glassy carbon electrode for the electrocatalytic oxidation of UDMH. The morphology characteristic of the composites was observed by SEM. By investigating the electrochemical behavior of the PB- TNTs/GCE and the electrochemical response of UDMH on the working electrode via cyclic voltammetry technique, the measurement reliability of the UDMH concentration at PB-TNTs/GCE was evaluated. The result shows that using titania nanotubes as the carriers, PB can be used as the catalyst to promote oxidation of UDMH, and the modified GCE showed good stability in the detection of UDMH solution. The linear range was from 0.2 mg/L to 60 rag/L, with a limit of detection of 2.4×10 -5 g/L was obtained using the amperometric method. The proposed sensor exhibited several advantages, including good stability, high sensitivity and good practicability.

关 键 词：普鲁士蓝 二氧化钛纳米管、玻碳电极 偏二甲肼 循环伏安 峰值电流 扫描速率 

分 类 号：TQ15[化学工程—电化学工业]