Electrochemical Determination of Rutin on a Gold Microsphere—Taro Stalk Porous Carbon Modified Carbon Ionic Liquid Electrode (CILE)

Abstract

As an abundant, inexpensive, and renewable biomass raw material, taro [Colocasia esculenta (L.) Schott] stalks were employed as a simple biochar template due to their porous structure. A composite composed of gold microsphere and taro stalk derived porous carbon (Au-MS@TSPC) was used to construct an electrochemical sensor for the sensitive determination of rutin. Under the optimized conditions, the sensor exhibited a wide linear range from 0.12 to 10.0 μmol·L⁻¹ with a detection limit of 0.0265 μmol·L⁻¹. The sensor demonstrated good selectivity and was applied to the determination of rutin in human serum with recoveries from 94.0% to 105.8%. The fabrication of Au-MS@TSPC in this study provides a promising approach for the subsequent utilization of taro stalks.

Keywords:

• Carbon ionic liquid electrode (CILE)
• differential pulse voltammetry (DPV)
• gold microsphere and taro stalk biomass porous carbon (Au-MS@TSPC)
• rutin

Disclosure statement

No potential conflict of interest was reported by the authors.

Additional information

Funding

The work was supported by the Specific Research Fund of the Innovation Platform for Academicians of Hainan Province (YSPTZX202126), Hainan Provincial Natural Science Foundation of Youth Fund Project (221QN0879), and the Innovation Platform for Academicians of Hainan Province.