基于氧化锆/石墨烯复合材料修饰电极测定亚硝酸根  

The detection of nitrite based on a ZrO_2-graphene composite modified electrode

作　　者：张娜[1] 张克营[2] 王芹[2] 邢俭俭 陈静[1] 

机构地区：[1]安徽省宿州学院体育学院,宿州234000 [2]安徽省宿州学院化学化工学院,安徽省宿州学院自旋电子与纳米材料安徽省重点实验室,宿州234000

出　　处：《分析试验室》2014年第12期1413-1415,共3页Chinese Journal of Analysis Laboratory

基　　金：安徽省自然科学基金青年项目(1208085QB33)资助

摘　　要：用水热法制备了氧化锆（ZrO2）/石墨烯（GR）复合材料,采用循环伏安法研究了NO2^-在ZrO2/GR/GCE上的电化学行为。ZrO2/GR/GCE对NO2^-的氧化具有明显的电催化作用。利用示差脉冲伏安法测定NO2^-,NO2^-的氧化峰电流与其浓度在4.8×10^-7-9.0×10^-4mol/L范围内呈现良好的线性关系,检出限为7.8×10^-8mol/L（S/N=3）。The composite of ZrO2^-graphene was synthesized by hydrothermal synthesis. A ZrO2^- grapheme modified electrode was fabricated and used to detect nitrite. Results indicated that the modified electrode exhibited an obvious electrocatalytic activity towards the oxidation of nitrite. DPV was used to detect nitrite. The oxidation peak current of nitrite was linear with the concentrations in the range of 4. 8 × 10^- 7- 9. 0 × 10^- 4mol / L with the detection limit of 7. 8 × 10^- 8mol / L（ S / N = 3）. In addition,the modified electrode exhibited good reproducibility and long-term stability,and was used to determine nitrite in real samples.

关 键 词：氧化锆 石墨烯 亚硝酸根 修饰电极 

分 类 号：O657.1[理学—分析化学]