New Methylene Blue Covalently Functionalized Graphene Oxide Nanocomposite As Interfacial Material for the Electroanalysis of Hydrogen Peroxide

Overview

Journal Front Chem

Specialty Chemistry

Date 2021 Dec 20

PMID 34926408

Citations 1

Authors

Jifang Chen

Ziqing Gao

Ruonan Yang

Huiling Jiang

Lin Bai

Ailong Shao

Hai Wu

Affiliations

Soon will be listed here.

Abstract

New methylene blue (NMB), a phenothiazine dye, was covalently bonded to graphene oxide (GO) using glutaraldehyde as a crosslinking agent, which was characterized by spectroscopic techniques and electrochemistry. The obtained GO-NMB nanocomposite was used as interface material to construct a novel electrochemical sensor for the determination of hydrogen peroxide (HO). The electrochemical sensor based on GO-NMB nanocomposite exhibited excellent electrocatalytic activity for the reduction of hydrogen peroxide (HO), which was also enhanced by GO within the GO-NMB nanocomposite. With the optimized experimental conditions, the developed sensor showed high sensitivity (79.4 μA mM cm) for electrocatalytic determination of HO at the applied potential of -0.50 V in the concentration range of 0.000333 to 2.28 mΜ. The low limit of detection (1.35 μM), good reproducibility, and high stability of the sensor suggests that the electrochemical sensor based on the GO-NMB nanocomposite possesses obvious advantages, which paves a new avenue to functionalize GO for obtaining electrode interface materials.

Citing Articles

Fabrication of Mechanically Alloyed Super Duplex Stainless Steel Powder-Modified Carbon Paste Electrode for the Determination of Methylene Blue by the Cyclic Voltammetry Technique.

Mahale R, Rajashekar V, Vasanth S, Peramenahalli Chikkegowda S, Rajendrachari S, Mahesh V ACS Omega. 2024; 9(9):10660-10670.

PMID: 38463296 PMC: 10918683. DOI: 10.1021/acsomega.3c09163.

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