3D porous metal-organic framework as an efficient electrocatalyst for nonenzymatic sensing application

Area of Science:

• Materials Science
• Electrochemistry
• Analytical Chemistry

Background:

• Electrochemical sensors require electroactive materials with high surface area and stability.
• Metal-organic frameworks (MOFs) offer tunable properties for various applications.

Purpose of the Study:

• To investigate the potential of porous Cu-based MOFs as nonenzymatic sensors.
• To evaluate the electrochemical performance of Cu-MOF modified electrodes for hydrogen peroxide and glucose detection.

Main Methods:

• Synthesis of a porous Cu-based MOF with large pore size.
• Modification of a carbon paste electrode (CPE) with the synthesized Cu-MOF.
• Electrochemical characterization and determination of hydrogen peroxide and glucose at physiological pH and alkaline conditions.

Main Results:

• The Cu-MOF exhibited high stability, even in NaOH solution.
• The Cu-MOF modified CPE showed a well-behaved redox event at physiological pH.
• The sensor demonstrated excellent electrocatalytic activity for both hydrogen peroxide electroreduction and glucose electrooxidation.

Conclusions:

• Porous Cu-MOFs are promising electroactive materials for electrochemical sensing.
• Cu-MOF based nonenzymatic sensors offer excellent analytical performance for hydrogen peroxide and glucose.
• This study highlights the potential of MOFs in developing advanced electrochemical sensor devices.