Electrosynthesis of three-dimensional nanoporous nickel on screen-printed electrode used for the determination of narirutin in citrus wastewater

Author(s)

Beluomini, Maisa Azevedo ^[1] ; Stradiotto, Nelson Ramos ^{[2, 1]} ; Boldrin, Maria Valnice ^[1]

Affiliation

^[1] Sao Paulo State Univ UNESP, Inst Chem, Dept Analyt Chem, 55 Prof Francisco Degni St, BR-14800060 Araraquara, SP - Brazil

^[2] Sao Paulo State Univ UNESP, Bioenergy Res Inst IPBEN, 55 Prof Francisco Degni St, BR-14800060 Araraquara, SP - Brazil

• Document type: Journal article
• Source: Food Chemistry; v. 353, AUG 15 2021.
• Web of Science Citations: 0

Abstract

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 \& ndash; 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.\& nbsp; Chemical compounds studied in this article. (AU)

• FAPESP's process: 18/12131-6 - Wireless electrochemical sensors based screen-printed electrodes modified with metallic nanopores for determination of flavonoids in wastes of the citrus industry
• Grantee: Maísa Azevedo Beluomini
• Support Opportunities: Scholarships in Brazil - Post-Doctoral
• FAPESP's process: 17/22401-8 - Fruit-refinery: obtention processes, characterization methods and generation of products derived from residues of the fruitculture
• Grantee: Nelson Ramos Stradiotto
• Support Opportunities: Research Projects - Thematic Grants
• FAPESP's process: 14/50945-4 - INCT 2014: National Institute for Alternative Technologies of Detection, Toxicological Evaluation and Removal of Micropollutants and Radioactivies
• Grantee: Maria Valnice Boldrin
• Support Opportunities: Research Projects - Thematic Grants