High Performance Non-enzymatic Glucose Sensor Based on One-Step Electrodeposited Nickel Sulfide

Area of Science:

• Materials Science
• Electrochemistry
• Sensor Technology

Background:

• Nanostructured materials offer unique properties for electrochemical applications.
• Nickel Sulfide (NiS) is a promising material for catalysis and sensing.
• Developing efficient non-enzymatic glucose sensors is crucial for diabetes management.

Purpose of the Study:

• To synthesize nanostructured NiS thin films using a facile electrodeposition method.
• To investigate the electrocatalytic activity of NiS thin films for glucose oxidation.
• To fabricate and evaluate a non-enzymatic glucose sensor based on NiS thin film.

Main Methods:

• One-step electrodeposition for NiS thin film synthesis.
• Characterization using X-ray diffractometry (XRD), Field Emission Scanning Electron Microscopy (FESEM), and Energy Dispersive X-ray Analysis (EDAX).
• Electrochemical performance evaluation via Cyclic Voltammetry (CV) and Amperometry.

Main Results:

• Successfully synthesized nanostructured NiS thin films with defined structural and morphological characteristics.
• Demonstrated significant electrocatalytic activity of NiS towards glucose oxidation.
• The fabricated non-enzymatic glucose sensor exhibited excellent sensitivity (7.43 μA μM⁻¹ cm⁻²), a low detection limit (0.32 μM), and a rapid response time (<8 s).

Conclusions:

• The one-step electrodeposition method is effective for producing nanostructured NiS thin films.
• NiS thin films are highly suitable for developing sensitive and rapid non-enzymatic glucose sensors.
• The fabricated sensor shows great potential for practical glucose monitoring applications.