NiO-Co3O4-rGO as a Multicomponent Transition Metal Oxide Nanocatalyst for Ultra-level Detection of Nitrite in Beef and Tap Water Samples

被引：20

作者：

Askari, Nahid ^{[1
]}

Baghizadeh, Amin ^{[1
]}

Beheshti-Marnani, Amirkhosro ^{[2
]}

Askari, Mohammad Bagher ^{[3
]}

Di Bartolomeo, Antonio ^{[4
,5
]}

机构：

[1] Grad Univ Adv Technol, Inst Sci & High Technol & Environm Sci, Dept Biotechnol, Kerman 7631885356, Iran

[2] Payame Noor Univ PNU, Dept Chem, Tehran 193953697, Iran

[3] Grad Univ Adv Technol, Inst Sci & High Technol & Environm Sci, Dept Semicond, POB 7631818356, Kerman, Iran

[4] Univ Salerno, Dept Phys ER Caianiello, I-84084 Salerno, Italy

[5] Univ Salerno, Interdept Ctr NANOMATES, I-84084 Salerno, Italy

来源：

ADVANCED MATERIALS INTERFACES | 2022年 / 9卷 / 31期

关键词：

electrochemical detection; nanocatalyst; NiO-Co; O-3; (4)-rGO; nitrite; HIGHLY SENSITIVE DETECTION; REDUCED GRAPHENE OXIDE; ELECTROCHEMICAL DETECTION; NANOCOMPOSITE; MEAT;

D O I：

10.1002/admi.202201180

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The detection of nitrite as a challenging compound in food industries has always been a necessity. To this purpose, herein, two transition metal oxide-based nanocatalysts, NiO-Co3O4 (NC) and its reduced graphene hybridized form, NiO-Co3O4-rGO (NCR), are synthesized by a hydrothermal method and characterized by X-ray diffraction, Raman spectroscopy, scanning electron microscope (SEM) images, and energy dispersive X-ray analysis (EDAX) mapping. The synthesized materials are exploited to modify a glassy carbon electrode and fabricate an effective sensor for nitrite detection in real samples through differential pulse voltammetry (DPV). NCR shows excellent sensitivity (40.44 mu A per dec), very low limit of detection (20 x 10(-9) m), significant accuracy, and good stability at the wide range of nitrite ions (100-500 x 10(-9) m) in real samples.

引用

页数：8

共 41 条

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