Issue 45, 2023

Design and development of a Sb2WO6/graphene oxide (2D) nanocomposite as novel electrochemical metal-ion sensor and improved photocatalyst for the degradation of tetracycline

Abstract

This study describes the single-step solvothermal synthesis of hierarchical orthorhombic Sb2WO6 nanostructures on layered graphene oxide (GO) and the utilization of the resulting product for heavy-metal-ion sensing and visible-light-driven photocatalysis. The adopted strategy generated a nanocomposite with improved interfacial contact among Sb2WO6 hierarchical structures and GO sheets, resulting in enhanced photocatalytic activity with faster charge relocation and attenuated charge-carrier recombination. PXRD, FTIR, SEM, TEM, DRS, and XPS techniques were used to characterize the synthesized pristine (Sb2WO6) and its hybrid nanocomposite with GO. A two-dimensional nest-like Sb2WO6/GO nanocomposite modified glassy carbon electrode was developed as a novel electrochemical sensor towards Hg2+ and UO22+ detection using cyclic voltammetry and differential pulse voltammetry methods under the limits of detection of 0.0038 μM and 0.014 μM, respectively. The Sb2WO6/GO sensor displayed good electrochemical stability through achieving consistent current measurements over time. The evaluated electrochemical parameters of Sb2WO6/GO indicated its photocatalytic desirability, which was then explored in the degradation of tetracycline in an attempt to combat antibiotic resistance. Tetracycline is a ubiquitous drug; however, with its widespread use and bad disposal practices, it is an emergent water contaminant that is posing growing concerns for aquatic ecosystems and a consequent threat of antibiotic resistance. Tetracycline degradation is an important water treatment application on account of its aquatic ecosystem sustainability and prevention of antibiotic resistance as a crucial worldwide health concern.

Graphical abstract: Design and development of a Sb2WO6/graphene oxide (2D) nanocomposite as novel electrochemical metal-ion sensor and improved photocatalyst for the degradation of tetracycline

Supplementary files

Article information

Article type
Paper
Submitted
01 Sep 2023
Accepted
24 Oct 2023
First published
06 Nov 2023

New J. Chem., 2023,47, 21067-21080

Design and development of a Sb2WO6/graphene oxide (2D) nanocomposite as novel electrochemical metal-ion sensor and improved photocatalyst for the degradation of tetracycline

Z. ul haq, I. Nazir, A. Qureashi, F. A. Ganaie, A. Bashir, K. Fatima, W. A. Shah and M. A. Rizvi, New J. Chem., 2023, 47, 21067 DOI: 10.1039/D3NJ04093C

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