Graphene-wrapped WO3/Mo derivatives for the simultaneous electrochemical detection of dopamine and uric acid

[Display omitted] •Graphene-incorporated h-WO3/MoO3/MoS2 was successfully synthesized and the phase transition of WO3 was identified during the hydrothermal treatment.•The process of reduction and sulfidation of MoO3 resulted in a hybrid mixture of MoO3/MoS2 in the composite.•The simultaneous detect...

Full description

Saved in:
Bibliographic Details
Published in:Materials science & engineering. B, Solid-state materials for advanced technology Solid-state materials for advanced technology, 2024-01, Vol.299, p.116967, Article 116967
Main Authors: Sai Iswarya Bakavaty, T., Gurunathan, Karuppasamy
Format: Article
Language:English
Subjects:
Dopamine
Electrochemical sensing
Graphene
MoO3/MoS2
Uric acid
WO3
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:[Display omitted] •Graphene-incorporated h-WO3/MoO3/MoS2 was successfully synthesized and the phase transition of WO3 was identified during the hydrothermal treatment.•The process of reduction and sulfidation of MoO3 resulted in a hybrid mixture of MoO3/MoS2 in the composite.•The simultaneous detection of dopamine(DA) and uric acid(UA) was evaluated with an LOD of 0.539 µM and 2.402 µM respectively.•Real-time analysis of DA and UA in human blood and urine samples exhibited recovery of around 96–110% We report the synthesis of tungsten oxide/Mo-derivatives incorporated graphene, h-WO3/MoO3/MoS2/rGO nanocomposite as an efficient electrocatalyst for the simultaneous determination of DA and UA. The composite was prepared via the simple hydrothermal method which invoked interesting morphological and structural changes to the composite’s components that were explored using the XRD, Raman, XPS and TEM characterization techniques. Under optimized conditions, the electroanalytical quantification in DPV exhibited two wide linear ranges of 1.25–194 µM and 244–495 µM for DA detection and a broad linear response of 10–1330 µM for UA detection. The LOD was found to be 0.539 µM and 2.402 µM for DA and UA respectively. The sensor’s anti-interference, repeatability, reproducibility and stability properties were also evaluated. Finally, the applicability in simultaneous detection of DA and UA in RT samples of human blood and urine samples were also successfully assessed whose results validates the sensor’s reliability.
ISSN:0921-5107
1873-4944
DOI:10.1016/j.mseb.2023.116967