Electropolymerization of poly(phenol red) on laser-induced graphene electrode enhanced adsorption of zinc for electrochemical detection

Natchaya Malarat; Asamee Soleh; Kasrin Saisahas; Krisada Samoson; Kiattisak Promsuwan; Jenjira Saichanapan; Sangay Wangchuk; Lingyin Meng; Warakorn Limbut

doi:10.1016/j.talanta.2024.125751

Electropolymerization of poly(phenol red) on laser-induced graphene electrode enhanced adsorption of zinc for electrochemical detection

Talanta. 2024 May 15:272:125751. doi: 10.1016/j.talanta.2024.125751. Epub 2024 Feb 10.

Authors

Natchaya Malarat¹, Asamee Soleh², Kasrin Saisahas³, Krisada Samoson², Kiattisak Promsuwan², Jenjira Saichanapan³, Sangay Wangchuk¹, Lingyin Meng⁴, Warakorn Limbut⁵

Affiliations

¹ Center of Excellence for Trace Analysis and Biosensor, Prince of Songkla University, Hat Yai, Songkhla, 90110, Thailand; Center of Excellence for Innovation in Chemistry, Prince of Songkla University, Hat Yai, Songkhla, 90110, Thailand; Division of Physical Science, Prince of Songkla University, Hat Yai, Songkhla, 90110, Thailand.
² Center of Excellence for Trace Analysis and Biosensor, Prince of Songkla University, Hat Yai, Songkhla, 90110, Thailand; Division of Health and Applied Sciences, Prince of Songkla University, Hat Yai, Songkhla, 90110, Thailand; Forensic Science Innovation and Service Center, Prince of Songkla University, Hat Yai, Songkhla, 90110, Thailand.
³ Division of Health and Applied Sciences, Prince of Songkla University, Hat Yai, Songkhla, 90110, Thailand; Forensic Science Innovation and Service Center, Prince of Songkla University, Hat Yai, Songkhla, 90110, Thailand.
⁴ Sensor and Actuator Systems, Department of Physics, Chemistry and Biology, Linköping University, 581 83, Linköping, Sweden. Electronic address: lingyin.meng@liu.se.
⁵ Center of Excellence for Trace Analysis and Biosensor, Prince of Songkla University, Hat Yai, Songkhla, 90110, Thailand; Center of Excellence for Innovation in Chemistry, Prince of Songkla University, Hat Yai, Songkhla, 90110, Thailand; Division of Health and Applied Sciences, Prince of Songkla University, Hat Yai, Songkhla, 90110, Thailand; Forensic Science Innovation and Service Center, Prince of Songkla University, Hat Yai, Songkhla, 90110, Thailand. Electronic address: warakorn.l@psu.ac.th.

PMID: 38377665
DOI: 10.1016/j.talanta.2024.125751

Abstract

We present a highly sensitive and selective electrode of laser-induced graphene modified with poly(phenol red) (P(PhR)@LIG) for measuring zinc nutrition in rice grains using square wave anodic stripping voltammetry (SWASV). The physicochemical properties of P(PhR)@LIG were investigated with scanning electron microscopy (SEM), energy-dispersive X-ray (EDX), Fourier infrared spectroscopy (FT-IR) and Raman spectroscopy. The modified electrode demonstrated an amplified anodic stripping response of Zn²⁺ due to the electropolymerization of P(PhR), which enhanced analyte adsorption during the accumulation step of SWASV. Under optimized parameters, the developed sensor provided a linear range from 30 to 3000 μg L^-1 with a detection limit of 14.5 μg L^-1. The proposed electrode demonstrated good reproducibility and good anti-interference properties. The sensor detected zinc nutrition in rice grain samples with good accuracy and the results were consistent with the standard ICP-OES method.

Keywords: Electrochemical sensor; Laser-induced graphene; Poly(phenol red); Rice grains; Zinc detection.