Electrochemical determination of hydrogen peroxide on a gold nanoparticle–nitrogen-doped graphene glassy carbon electrode. Issue 5 (3rd September 2018)

• Record Type: Journal Article
• Authors: Liu, Fang; Zhang, Jingwei; Liu, Yanan; Niu, Shuyan; Wan, Jun
• Is Part Of: Instrumentation science & technology. Volume 46:Issue 5(2018)
• Page Start: 555
• Page End: 566
• Publication Date: 2018-09-03
• Subjects: Differential pulse voltammetry -- electrochemical sensor -- hydrogen peroxide -- nitrogen-doped grapheme; Scientific apparatus and instruments -- Periodicals; 681.2
• DOI: 10.1080/10739149.2017.1410488
• Languages: English
• ISSNs: 1073-9149

Abstract

ABSTRACT: A novel nonenzymatic sensor based on gold nanoparticle–nitrogen-doped graphene was synthesized by electrochemical sequential deposition on the surface of a glassy carbon electrode. Nitrogen-doped graphene was synthesized by a hydrothermal method using graphene oxide and carbamide as the raw materials mixed in specific proportions. The gold nanoparticles were used in the electrochemical sensor to provide unique electronic and electrochemical properties. Under the optimized conditions, hydrogen peroxide was determined by differential pulse voltammetry with a linear relationship for concentrations from 1.0 × 10 −7 to 1.0 × 10 −5 mol L −1 . The detection limit was 4.9 × 10 −8 mol · L −1 (according to the 3 σ rule) and the recoveries were 95.0–98.0%. This sensor is simple, reproducible, and demonstrates that nitrogen-doped graphene oxide has potential applications for electrochemical sensors.