Fabrication of CuS-MoO3 nanocomposite for high-performance photocatalysis and biosensing

IF 4 2区化学 Q2 CHEMISTRY, PHYSICAL

Journal of Molecular Structure Pub Date : 2024-11-23 DOI:10.1016/j.molstruc.2024.140823

E. Vinay Kumar , T.L. Soundarya , B.E. Kumara Swamy , Anitha , G. Nagaraju

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引用次数: 0

Abstract

The design and development of highly efficient nanostructure materials for photocatalytic and electrochemical applications is very necessary. In this study, CuS-MoO₃ nanocomposite (NCs) was fabricated using a simple wet impregnation process and the photodegradation potential for 8 major hazardous dyes and electrochemical sensing of Dopamine was investigated. X-ray diffraction (XRD), Fourier transform - Infrared spectroscopy (FTIR), UV-Vis spectroscopy (UV-Vis), Photoluminescence spectroscopy (PL), Scanning Electron Microscopy (SEM), Energy-dispersive X-ray spectroscopy (EDX) and Transmission Electron Microscopy (TEM) were employed for characterization. Fabricated NCs are made up of CuS in the hexagonal phase and MoO₃ in the orthorhombic phase, both of which react to UV light. Optical and electrochemical impedance spectroscopy (EIS) results show that improved photocatalytic performance is related to increased UV light spectrum sensitivity, inhibited charge carrier recombination, and decreased band gap energy in the NCs. Experimental findings showed that CuS-MoO₃ (CMS) NCs had substantially more photocatalytic degradation activity than pure MoO₃ and CuS nanoparticles (NPs). The prepared CMS NCs were then used for electrochemical analysis of Dopamine (DA). Electroanalytical results showed that the CMS NCs had enhanced electrochemical activity towards DA. The constructed sensor has a limit of detection of (6.61 µM) and proved that it is capable of being a sensor.

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来源期刊

Journal of Molecular Structure 化学-物理化学

CiteScore

7.10

自引率

15.80%

发文量

2384

审稿时长

45 days

期刊介绍： The Journal of Molecular Structure is dedicated to the publication of full-length articles and review papers, providing important new structural information on all types of chemical species including: • Stable and unstable molecules in all types of environments (vapour, molecular beam, liquid, solution, liquid crystal, solid state, matrix-isolated, surface-absorbed etc.) • Chemical intermediates • Molecules in excited states • Biological molecules • Polymers. The methods used may include any combination of spectroscopic and non-spectroscopic techniques, for example: • Infrared spectroscopy (mid, far, near) • Raman spectroscopy and non-linear Raman methods (CARS, etc.) • Electronic absorption spectroscopy • Optical rotatory dispersion and circular dichroism • Fluorescence and phosphorescence techniques • Electron spectroscopies (PES, XPS), EXAFS, etc. • Microwave spectroscopy • Electron diffraction • NMR and ESR spectroscopies • Mössbauer spectroscopy • X-ray crystallography • Charge Density Analyses • Computational Studies (supplementing experimental methods) We encourage publications combining theoretical and experimental approaches. The structural insights gained by the studies should be correlated with the properties, activity and/ or reactivity of the molecule under investigation and the relevance of this molecule and its implications should be discussed.