Electrochemical Strips Modified with Zeolites Embedding Silver Clusters for Versatile (Bio)Systems.

Area of Science:

• Electrochemistry
• Materials Science
• Nanotechnology

Background:

• Disposable biosensors are vital for portable analytical platforms due to their portability and rapid response times.
• Developing advanced electroactive materials is key to improving electrode-analyte interactions and electron transfer in electrochemical sensors.

Purpose of the Study:

• To develop a novel electroactive material using zeolites embedding silver clusters for disposable electrochemical sensors.
• To demonstrate the versatility of this composite material for detecting both inorganic ions and biomolecules.

Main Methods:

• Zeolites embedding silver clusters were synthesized and characterized as an electroactive material.
• Disposable electrochemical strips (plastic/paper) were modified with the composite material.
• The composite's performance was evaluated for chloride ion detection via redox properties and glucose sensing via electrocatalysis with glucose oxidase.

Main Results:

• The zeolites-silver cluster composite effectively immobilized analytes and facilitated electron transfer.
• Chloride ion detection was achieved, suitable for environmental monitoring.
• Glucose sensing demonstrated the material's electrocatalytic activity and versatility for different analytes.

Conclusions:

• Zeolites embedding silver clusters represent a simple, low-cost modification for disposable electrochemical sensors.
• This approach enhances electrode-analyte interaction and electron exchange, crucial for portable and point-of-care devices.
• The composite material shows promise for developing versatile sensors for diverse clinical and environmental applications.