Ni纳米催化剂的制备及其对葡萄糖电催化氧化的研究

发布时间：2018-01-25 03:30

本文关键词： Ni/AC 葡萄糖电催化氧化循环伏安法　出处：《化学通报》2016年09期 　论文类型：期刊论文

【摘要】：采用等体积浸渍和程序升温还原的方法制备了不同Ni含量的Ni/AC纳米催化剂,并对其进行了形貌和结构表征。采用三电极体系和循环伏安法在碱性溶液中进行了其对葡萄糖催化氧化的电化学测试。结果表明,Ni/AC/GCE(修饰在玻碳电极上的Ni/AC)催化剂对葡萄糖有较强的电催化氧化作用。其中,20%的Ni/AC/GCE对葡萄糖电催化氧化作用最强,且随着葡萄糖浓度增加,响应电流显著增大,二者呈线性相关。20%Ni/AC/GCE催化剂对葡萄糖催化氧化的线性响应范围为0.2~6.5 mmol/L,相关系数为0.999,响应灵敏度是13.15μA/(mmol/L),最低检测限为35μmol/L。稳定性测试结果表明,20%Ni/AC/GCE有着良好的稳定性,每隔两天测试,运行三周后其响应电流仍能维持在95%以上。
[Abstract]:Ni/AC nanocatalysts with different Ni contents were prepared by constant volume impregnation and temperature-programmed reduction. Its morphology and structure were characterized. The electrochemical test of glucose catalytic oxidation was carried out in alkaline solution by three-electrode system and cyclic voltammetry. The Ni / AC / GCE-modified Ni / AC catalyst has a strong electrocatalytic effect on glucose oxidation. 20% Ni/AC/GCE had the strongest effect on the electrocatalytic oxidation of glucose, and the response current increased significantly with the increase of glucose concentration. The linear response range of the Ni / AC / GCE catalyst for glucose catalytic oxidation was 0.26.5 mmol / L, and the correlation coefficient was 0.999. The response sensitivity is 13.15 渭 A / mol / L and the minimum detection limit is 35 渭 mol / L. the stability test results show that the stability of Ni20 / AC / GCE is good. After three weeks of operation, the response current remains above 95% every two days.
【作者单位】：西安交通大学化学工程与技术学院;
【基金】：陕西省自然科学基金研究计划重点项目(2015JZ004)资助
【分类号】：O643.36;TB383.1
【正文快照】： *联系人,齐随涛女,主要从事能源转化过程多相催化剂的制备研究,E-mail:suitaoqi@mail.xjtu.edu.cn陕西省自然科学基金研究计划重点项目(2015JZ004)资助近年来葡萄糖传感器已经被广泛应用于很多领域,比如临床诊断中的血糖检测、生物技术中的葡萄糖发酵和食品工业中的葡萄糖含量

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