A new ionic liquid comprising lanthanum(iii) bulk-modified carbon paste electrode: preparation, electrochemistry and...

Area of Science:

• Materials Chemistry
• Electrochemistry
• Inorganic Chemistry

Background:

• Ionic liquids offer unique solvent properties.
• Lanthanum complexes can exhibit interesting catalytic behaviors.
• Electrochemical sensors require robust and sensitive electrode materials.

Purpose of the Study:

• Synthesize and characterize a new metal-containing ionic liquid.
• Investigate the electrochemical properties of a modified electrode.
• Evaluate the electrocatalytic activity of the new material for sensing applications.

Main Methods:

• Synthesis of [(C4H9)2-bim]3[La(NO3)6] ionic liquid.
• Structural characterization using X-ray crystallography, IR, and elemental analysis.
• Electrochemical studies using a bulk-modified carbon paste electrode (La-CPE).

Main Results:

• Successful synthesis and full characterization of the lanthanum-based ionic liquid.
• The La-CPE demonstrated significant electrocatalytic activity for the reduction of hydrogen peroxide, nitrite, bromate, and trichloroacetic acid (TCA).
• The modified electrode showed good reproducibility, high stability, and a low detection limit.

Conclusions:

• The synthesized lanthanum ionic liquid forms an effective electrocatalyst.
• The La-CPE is a promising material for developing practical electrochemical sensors.
• The material's properties are suitable for rapid and simple sensor preparation.