Prussian blue nanospheres synthesized in deep eutectic solvents

Area of Science:

• Materials Science
• Nanotechnology
• Electrochemistry

Background:

• Controlled synthesis of nanomaterials is crucial for advanced applications.
• Deep eutectic solvents (DES) offer unique properties as reaction media.
• Prussian blue (PB) nanomaterials have potential in catalysis and sensing.

Purpose of the Study:

• To demonstrate a novel route for size-controlled Prussian blue nanosphere (PB NS) synthesis using DES.
• To investigate the electrochemical and electrocatalytic properties of synthesized PB NSs.
• To explore the application of PB NSs in glucose sensing.

Main Methods:

• Synthesis of PB NSs using Fe(CN)(6)(4-) and Fe(3+) ions in DES.
• Characterization using UV-visible spectroscopy, X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and transmission electron microscopy (TEM).
• Electrochemical and electrocatalytic performance evaluation for H(2)O(2) reduction and glucose sensing.

Main Results:

• Successfully synthesized size-controlled PB NSs directly in DES.
• PB NSs exhibited excellent catalytic activity for H(2)O(2) reduction.
• Demonstrated sensitive glucose detection with a linear range of 0.9 μM to 0.12 mM, LOD of 0.3 μM, and sensitivity of 61.7 A cm(-2) M(-1).

Conclusions:

• DES provide a versatile platform for controlled synthesis of PB NSs.
• The synthesized PB NSs show promise for electrochemical sensing applications, particularly for glucose.
• This strategy can be extended to create other functional nanomaterials in DES.