Cu-TCPP Nanosheets-Sensitized Electrode for Simultaneous Determination of Hydroquinone and Catechol

Area of Science:

• Electrochemistry
• Materials Science
• Environmental Science

Background:

• Hydroquinone (HQ) and Catechol (CC) are toxic environmental pollutants requiring sensitive detection methods.
• Existing methods for simultaneous HQ and CC determination can be complex and lack sensitivity.

Purpose of the Study:

• To develop a sensitive, simple, and convenient method for the simultaneous determination of HQ and CC.
• To utilize Cu-TCPP nanosheets as a novel material for electrochemical sensing.

Main Methods:

• Cu-TCPP nanosheets were synthesized using a solvent exfoliation method in N,N-dimethylformamide (DMF).
• Cu-TCPP nanosheets were characterized for morphology and electrochemical properties.
• Glassy carbon electrodes (GCEs) were modified with Cu-TCPP nanosheets (Cu-TCPP/GCEs) for electrochemical analysis.

Main Results:

• Cu-TCPP nanosheets exhibited a stacked sheet structure with abundant pores and excellent electron transfer ability.
• Cu-TCPP/GCEs demonstrated significant enhancement of electrochemical oxidation currents for HQ and CC.
• The method achieved low detection limits of 3.4 nM for HQ and 2.3 nM for CC with high sensitivity.

Conclusions:

• Cu-TCPP nanosheets effectively enhance the electrochemical detection of HQ and CC by improving accumulation and catalytic rates.
• The developed method is sensitive, simple, and suitable for the simultaneous determination of HQ and CC in water samples.
• This approach offers a promising tool for environmental monitoring of toxic phenolic compounds.