Electrosynthesis of three-dimensional nanoporous nickel on screen-printed electrode used for the determination of narirutin in citrus wastewater
Electrosynthesis of three-dimensional nanoporous nickel on screen-printed electrode used for the determination of narirutin in citrus wastewater
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DOI：
10.1016/j.foodchem.2021.129427
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发表时间：
2021-03-10
期刊：
影响因子：
8.8
通讯作者：
Boldrin, Maria Valnice
中科院分区：
文献类型：
--
作者：
Beluomini, Maisa Azevedo;Stradiotto, Nelson Ramos;Boldrin, Maria Valnice
在本研究中，设计了一种基于三维纳米多孔镍的丝网印刷电极(3DnpNi/SPE)电化学传感器。采用动态氢泡模板法制备了修饰电极。用光谱、显微镜和电化学方法对3DnpNi/SPE进行了表征。结果表明，3DnpNi/SPE对那芦丁的氧化具有良好的电催化活性。采用差示脉冲伏安法测定了柚芦丁的含量，其浓度范围宽(10~(-7)~1.0~(-1)倍；10~(-5)摩尔L~(-1))，检出限低(3.9~(-)倍；10~(-8)摩尔L~(-1))，灵敏度高(0.31A·L~(-1))。将该电极应用于柑橘行业黄水样中柚芦丁的测定，结果表明，该电极具有良好的准确度。3DnpNi/SPE具有重复性、长期稳定性和选择性。所得结果与高效液相色谱/DAD法测定的结果一致。本文所研究的化合物。
In this study, an electrochemical sensor was designed for the detection of narirutin using three-dimensional nanostructured porous nickel on screen-printed electrode (3DnpNi/SPE). The modified electrode was successfully synthesized by the dynamic hydrogen bubble template method. The 3DnpNi/SPE was characterized by spectroscopic, microscopic, and electrochemical methods. The results showed that the 3DnpNi/SPE presents good electrocatalytic activity for the oxidation of narirutin. The quantification of narirutin was conducted by differential pulse voltammetry, which showed a wide concentration range (1.0 & times; 10-7-1.0 & times; 10-5 mol L-1), with low detection limit (3.9 & times; 10-8 mol L-1), and excellent sensitivity (0.31 A L mol- 1). The proposed electrode was applied toward the determination of narirutin in yellow water sample from the citrus industry, where it presented a good degree of accuracy. The 3DnpNi/SPE showed repeatability, long-term stability, and selectivity. The results obtained showed agreement with those obtained by HPLC/DAD method. Chemical compounds studied in this article.