Detection of nitrite using a novel electrochemical sensor based on palladium/zinc oxide/graphene oxide nanocomposite

被引：14

作者：

Moradi, Amir Hossein ^{[1
]}

Dehghan, Parvin ^{[2
]}

Alipour, Esmaeel ^{[3
]}

Divband, Baharak ^{[4
]}

Akbari, Arezou ^{[1
]}

Khezerlou, Arezou ^{[1
]}

机构：

[1] Tabriz Univ Med Sci, Fac Nutr & Food Sci, Dept Food Sci & Technol, Student Res Comm, Tabriz, Iran

[2] Tabriz Univ Med Sci, Fac Nutr & Food Sci, Nutr Res Ctr, Dept Nutr, Tabriz, Iran

[3] Univ Tabriz, Fac Chem, Dept Analyt Chem, Tabriz, Iran

[4] Tabriz Univ Med Sci, Dent & Periodontal Res Ctr, Tabriz, Iran

来源：

INTERNATIONAL JOURNAL OF ENVIRONMENTAL ANALYTICAL CHEMISTRY | 2024年 / 104卷 / 02期

关键词：

Nanocomposite; electrochemical sensor; nitrite detection; PZGO; GCE; GRAPHENE; NANOPARTICLES; ZNO; NITRATE; ELECTROCATALYSIS; ELECTRODE; AMMONIA; WATER; ND3+; FOOD;

D O I：

10.1080/03067319.2021.2020765

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Palladium/zinc oxide loaded on graphene oxide (PZGO) nanocomposites were successfully synthesised in-situ for the first time, and its properties were characterised by scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDS), and powder-XRD techniques. The prepared nanocomposite was used to modify the glassy carbon electrode (GCE) surface for the determination of nitrite ions (NO2-) in foodstuffs. The synergetic effect of different layers was then investigated using PZGO nanocomposites and graphene oxide nanoparticles (GO) to modify the GCE surface. Voltammetric analysis showed that the nanocomposite has a desirable catalytic activity towards nitrite oxidation. The proposed sensor can selectively detect nitrite ions within a linear range from 3.17 mu M to 1111 mu M with a detection limit of 2.39 mu M. The synthesised nanocomposites were stable for at least 9 months and the developed sensor had long stability.

引用

页码：373 / 388

页数：16

共 55 条

[1] Detection methods of nitrate in water: A review [J].