Nickel hexacyanoferrate nanoparticle-decorated 3D rGO composites-based electrochemical sensing platform for detection of di-2-ethylhexyl phthalate

Yuyao Liu; Yuan Deng; Dongyun Liao; Yujie Han; Qiang Wang; Yujing Guo; Hongcun Bai; Chuan Dong; Lifang Fan

doi:10.1007/s00604-023-05670-w

Nickel hexacyanoferrate nanoparticle-decorated 3D rGO composites-based electrochemical sensing platform for detection of di-2-ethylhexyl phthalate

Mikrochim Acta. 2023 Feb 28;190(3):107. doi: 10.1007/s00604-023-05670-w.

Authors

Yuyao Liu¹, Yuan Deng¹, Dongyun Liao¹, Yujie Han¹, Qiang Wang², Yujing Guo³, Hongcun Bai⁴, Chuan Dong¹, Lifang Fan⁵

Affiliations

¹ Institute of Environmental Science, College of Chemistry and Chemical Engineering, Shanxi University, Shanxi, 030006, Taiyuan, People's Republic of China.
² State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan, 030001, Shanxi, China.
³ Institute of Environmental Science, College of Chemistry and Chemical Engineering, Shanxi University, Shanxi, 030006, Taiyuan, People's Republic of China. guoyj@sxu.edu.cn.
⁴ State Key Laboratory of High-Efficiency Utilization of Coal and Green Chemical Engineering, Ningxia University, Yinchuan, 750021, Ningxia, China.
⁵ Institute of Environmental Science, College of Chemistry and Chemical Engineering, Shanxi University, Shanxi, 030006, Taiyuan, People's Republic of China. flf@sxu.edu.cn.

PMID: 36854982
DOI: 10.1007/s00604-023-05670-w

Abstract

A label-free and efficient electrochemical (EC) sensing platform for di-2-ethylhexyl phthalate (DEHP) was developed based on in situ probe nickel hexacyanoferrate nanoparticle (NiHCF NP)-decorated three-dimensional reduced graphene oxide (3D rGO) composites. NiHCF NPs in the composites as an in situ probe show a pair of well-defined peaks with good reversibility and stability. Coupling 3D rGO with NiHCF NPs not only improved the electron transfer capability of NiHCF NPs but also provided more sites for aptamer immobilization. The synthesized NiHCF NP-decorated 3D rGO composites were used to act as a substrate for the immobilization of anti-DEHP aptamer by the covalent bonding method. The designed EC sensing platform displays excellent sensing performance for DEHP with a low detection limit of 3.64 pg/L, and a linear working range of 0.01 - 1000 ng/L. The application of the sensing platform to actual environmental samples was studied and satisfactory results were obtained. Thus, the proposed EC sensing platform would provide a potential tool for efficient detection of pollutants in the environment.

Keywords: Aptamer; Di-2-ethylhexyl phthalate; Differential pulse voltammetry; Electrochemical sensing platform; Nickel hexacyanoferrate.

Abstract

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