Ecofriendly Sunlight-Mediated Nontoxic Bimetallic Nanoparticles: Synthesis, Reusable Catalytic Membrane, and...

Area of Science:

• Nanotechnology
• Materials Science
• Green Chemistry

Background:

• Bimetallic nanoparticles (BMNPs) offer superior properties compared to monometallic nanoparticles.
• Conventional synthesis methods often involve harsh chemicals and conditions.

Purpose of the Study:

• To develop an eco-friendly and rapid synthesis for silver-copper bimetallic nanoparticles (Ag-Cu BMNPs).
• To integrate Ag-Cu BMNPs into reusable catalytic membranes.
• To explore the sensing capabilities of Ag-Cu BMNPs.

Main Methods:

• Sunlight-mediated synthesis of Ag-Cu BMNPs using water radiolysis.
• Immobilization of Ag-Cu BMNPs onto PTFE syringe filters (PTFE@Ag-Cu).
• In-situ growth of Ag-Cu BMNPs on activated carbon fiber (ACF) cloth (ACF@Ag-Cu).

Main Results:

• Rapid Ag-Cu BMNPs formation at room temperature within 10 minutes.
• PTFE@Ag-Cu membranes showed high reusability and efficiency in p-nitrophenol reduction over 105 cycles.
• Ag-Cu BMNPs exhibited excellent peroxidase-mimic activity for H2O2 detection (LOD 13.3 µM).
• Ag-Cu nanoenzyme demonstrated potential for sensitive electrochemical glucose detection (LOD 0.1 µM).

Conclusions:

• Sunlight-driven synthesis provides a green and efficient route to Ag-Cu BMNPs.
• The developed catalytic membranes exhibit robust performance and reusability.
• Ag-Cu BMNPs show significant promise as nanozymes for sensitive H2O2 and glucose detection.