Self-Assembled Graphene for Determination of Catechol in Wastewater at Modified Glassy Carbon Electrode

Abstract:

Graphene-modified glassy carbon electrode was made by dropping. In phosphate-citric acid buffered saline, the modified electrode was shown to possess an excellent selective electrocatalytical effect on the redox of catechol, and further used to determine catechol in the presence of resorcin and hydroquinone by cyclic voltammetry. The oxidation peak currents Ipa showed a linear relationship with the concentrations (c) of catechol in the range of 2.97×10^-7 mol•L-1~9.31×10^-6 mol•L-1 and 9.31×10-6 mol•L-1~1.03×10-4 mol•L-1 with a correlation coefficient as follows: Ipa1(A)= -4.10×10-6-2.31c, R=0.^{Superscript text}9971; Ipa2 (A) =-1.50×10^-5-0.60c, R=0.9953, respectively, and the detection limit is 2.50×10-8 mol•L-1. The modified electrode is high sensitivity, selectivity, stability, and has been successful^{Superscript text}ly applied to analyzing catechol in wastewater.

• Periodical: Applied Mechanics and Materials (Volume 161)
• Pages: 255-259
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.161.255
• Online since: March 2012
• Authors: Mei Feng Chen, Xin Ying Ma, Xia Li
• Keywords: Catechol, Graphen, Modified Electrode, Wastewater

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