基于硫化钴镍/多壁碳纳米管复合材料的电化学传感器检测芦丁
Detection of Rutin by Electrochemical Sensor Based on Cobalt-Nickel Sulphide/Multi-walled Carbon Nanotubes Composites
黄青 1李美仪 1徐舒柔 1诸葛文凤 1冯锦鑫 1廖珊珊 1陈宇婷 1许宁宁 1张翠忠 1黄唯 1彭金云 1凌晨东 2何华凤1
作者信息
- 1. 广西民族师范学院化学与生物工程学院,广西锰资源高值化利用重点实验室,崇左 532200
- 2. 广西华政新能源科技有限公司,崇左 532200
- 折叠
摘要
采用水热法制备硫化钴镍(NiCo2S4)三元材料,将其与多壁碳纳米管(MWCNT)复合,构建了一种用于定量检测芦丁的电化学传感器.采用扫描电镜及X射线衍射仪对电化学材料进行了形貌表征与晶体分析,并研究了硫化钴镍/多壁碳纳米管复合材料(NiCo2S4/MWCNT)修饰玻碳电极(GCE)的电化学行为.结果表明,芦丁在复合材料修饰GCE表面发生了双电子和双质子的电化学氧化还原反应.在优化的条件下,采用方波伏安法(SWV)检测芦丁的线性范围为0.06～14.8 μmol/L,检出限为14.3 nmol/L.此电化学传感器灵敏、简便、成本低,具有良好的重现性及可靠的稳定性,可用于芦丁的快速检测.将其用于复方芦丁片和珍菊降压片实际样品中芦丁含量的检测,加标回收率为99.5%～102.0%.
Abstract
The cobalt sulphide nickel ternary material(NiCo2S4)prepared by hydrothermal method in this work was combined with multi-walled carbon nanotubes(MWCNT)for constructing an electrochemical sensor for quantitative detection of rutin.The morphology and crystal of the electrochemical materials were characterized by scanning electron microscopy and X-ray diffractometer,and the electrochemical behavior of the glassy carbon electrode(GCE)modified with NiCo2S4/MWCNT composites was investigated.The experimental results showed that the electrochemical redox process of two electrons and two protons occurred on the surface of modified electrode NiCo2S4/MWCNT/GCE.Under the optimized conditions,the linear range for detection of rutin by square-wave voltammetry(SWV)using this sensor was 0.06-14.8 μmol/L and the detection limit was 14.3 nmol/L.The electrochemical sensor was sensitive,simple and low-cost,with good reproducibility and reliable stability,and could be used for detection of rutin in real samples such as compound rutin tablets and color chrysanthemi tablets,with spiked recoveries of 99.5%-102.0%.
关键词
芦丁/硫化钴镍/多壁碳纳米管/电化学传感器Key words
Rutin/Cobalt nickel sulfide/Multi-walled carbon nanotubes/Electrochemical sensor引用本文复制引用
出版年
2024
国家科技期刊平台
NSTL
万方数据