Progress in NiO Based Materials for Electrochemical Sensing Applications

Area of Science:

• Materials Science
• Electrochemistry
• Nanotechnology

Background:

• Nickel oxide (NiO) is a wide bandgap p-type semiconductor with excellent redox properties, chemical stability, and ease of synthesis.
• Its strong electrocatalytic activity is beneficial for detecting diverse analytes like glucose, hydrogen peroxide, pollutants, and biomolecules.
• Nanotechnology advancements have led to NiO nanostructures (nanoparticles, nanowires, nanoflakes) with increased surface area and improved electron transfer.

Purpose of the Study:

• To review recent progress in NiO-based materials for electrochemical sensing.
• To highlight structural engineering and composite formation strategies.
• To discuss electrochemical mechanisms for advanced sensing applications.

Main Methods:

• Review of literature on NiO-based electrochemical sensors.
• Analysis of nanostructuring techniques for NiO.
• Investigation of composite materials integrating NiO with graphene, carbon nanotubes, and MOFs.
• Exploration of synthesis methods like hydrothermal, sol-gel, and green approaches.

Main Results:

• NiO nanostructures offer enhanced surface area and electron transfer for improved sensing.
• Integration with conductive materials like graphene and MOFs leads to synergistic effects, boosting sensor performance.
• Various synthesis techniques facilitate the development of NiO for next-generation sensing platforms.

Conclusions:

• NiO is a versatile material for electrochemical sensing, particularly when engineered into nanostructures and composites.
• Continued research into structural modifications and composite formation will drive advancements in NiO-based sensor technology.
• Understanding electrochemical mechanisms is crucial for optimizing NiO materials in advanced sensing applications.