Au/Fe3O4/壳聚糖纳米复合物NO2-传感电极

doi:10.13208/j.electrochem.140620

电化学（中英文） ›› 2015, Vol. 21 ›› Issue (1): 85-90. doi: 10.13208/j.electrochem.140620

Au/Fe₃O₄/壳聚糖纳米复合物NO₂^-传感电极

董莹，王勇，邢欢欢，屈建莹^*

河南大学化学化工学院，环境与分析科学研究所，河南开封 475004

收稿日期:2014-06-20 修回日期:2014-08-30 发布日期:2014-09-15 出版日期:2015-02-28
通讯作者: 屈建莹 E-mail:qujy@henu.edu.cn, QJY405407@163.com

A Novel Nitrite Sensing Electrode Based on Au/Fe₃O₄/Chitosan Nanocomposite

DONG Ying, WANG Yong, XING Huan-huan, QU Jian-ying^*

Institute of Environmental and Analytical Sciences, College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, Henan, China

Received:2014-06-20 Revised:2014-08-30 Online:2014-09-15 Published:2015-02-28
Contact: QU Jian-ying E-mail:qujy@henu.edu.cn, QJY405407@163.com

摘要/Abstract

摘要： 以壳聚糖为保护膜、玻碳为基底，用纳米Au和Fe₃O₄磁性纳米粒子构建了新型亚硝酸盐（NO₂^-）传感电极. 实验表明，该传感电极对NO₂^-有良好的电催化氧化活性，NO₂^-浓度(5.0×10^-6 ~ 2.0×10^-3 mol·L^-1)与氧化峰电流之间呈良好的线性关系（R = 0.9996），检出限7.1×10^-7 mol·L^-1, 其灵敏度高、选择性好、重现性好.

关键词: Fe₃O₄磁性纳米粒子, 纳米Au, 亚硝酸盐

Abstract: A novel nitrite sensing electrode based on gold nanoparticles and iron oxides (Fe₃O₄) magnetic nanoparticles was fabricated with chitosan as the protective film on glassy carbon matrix. Experiment results showed that the sensing electrode exhibited good electrocatalytic activity toward oxidation of nitrite, and the oxidation peak current increased linearly with the concentration of nitrite varying from 5.0×10^-6 to 2.0×10^-3 mol·L^-1 (R=0.9996) with a detection limit of 7.1×10^-7 mol·L^-1 (S/N=3). The sensing electrode exhibited good sensitivity, selectivity and repeatability.

Key words: Fe3O4 magnetic nanoparticles, gold nanoparticles, nitrite

中图分类号:

O657.1

董莹，王勇，邢欢欢，屈建莹*. Au/Fe₃O₄/壳聚糖纳米复合物NO₂^-传感电极[J]. 电化学（中英文）, 2015, 21(1): 85-90.

DONG Ying, WANG Yong, XING Huan-huan, QU Jian-ying*. A Novel Nitrite Sensing Electrode Based on Au/Fe₃O₄/Chitosan Nanocomposite[J]. Journal of Electrochemistry, 2015, 21(1): 85-90.

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链接本文: https://electrochem.xmu.edu.cn/CN/10.13208/j.electrochem.140620

https://electrochem.xmu.edu.cn/CN/Y2015/V21/I1/85

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Au/Fe₃O₄/壳聚糖纳米复合物NO₂^-传感电极

A Novel Nitrite Sensing Electrode Based on Au/Fe₃O₄/Chitosan Nanocomposite

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