Hybrid PANI@dialdehyde carboxymethyl cellulose/ZnO nanocomposite modified glassy carbon electrode as a highly sensitive electrochemical sensor

• Type: Article in International Scientific Journal
• Date: 2022

Authors

Raed H. Althomali (Author) Other; Khalid A. Alamry (Author) Other; Mahmoud A. Hussein (Author) Other; Rui Miranda Guedes (Author) FEUP

Journal

Title: Diamond and Related Materials

Vol. 122

Pages: 1-11

ISSN: 0925-9635

Publisher: Elsevier

Indexing

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Other information

Authenticus ID: P-00W-2NM

DOI: 10.1016/j.diamond.2021.108803

Abstract (EN): In this research, a highly sensitive voltammetric sensor for hydrogen peroxide (H2O2) detection has been examined using a new hybrid material based polyaniline, dialdyhayed carboxmethyl cellouse and in the presence of ZnO nanoparticles abbreviated as (PANI/D-CMC/ZnO). Various approaches such as cyclic voltammetry (CV), and differential pulse voltammetry were used to investigate the electrocatalytic reduction of H2O2 (DPV). After preparation, (SEM) scanning electron microscopy, (XRD) X-ray diffraction, and (FTIR) Fourier transform infrared techniques were used to characterize and analyze the obtained PANI/D-CMC/ZnO material. Furthermore, as a suitable for determining hydrogen peroxide (H2O2), a high conductivity platform based on PANI/D-CMC/ZnO electrode modified nanocomposite was created. The modified PANI/D-CMC/ZnO, electrode indicated a good linear range and a low detection limit (LOD) of 0.45 M for hydrogen peroxide determination under optimal conditions (pH 5.7). The peak current of differential pulse voltammetry (DPV) method of hydrogen peroxide increased linearly with its concentration. The concentration has been linear from in the ranges of 0.50 to 5 mu M and 10 to 50 mu M. The sensor was successfully used to test for hydrogen peroxide in real samples like milk.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 11