An electrochemiluminescence aptasensor based on poly(aniline-luminol)/graphene oxide/chitosan for ultra-sensitive detection of Hg2+

被引：7

作者：

Huang, Jiali ^{[1
]}

Dong, Ruirui ^{[1
]}

Habibul, Marhaba ^{[1
]}

Zhang, Yanhui ^{[1
]}

Guan, Ming ^{[1
]}

Li, Guixin ^{[1
]}

机构：

[1] Xinjiang Normal Univ, Sch Chem & Chem Engn, Xinjiang Key Lab Energy Storage & Photoelectrocata, Urumqi 830054, Xinjiang, Peoples R China

来源：

POLYMER BULLETIN | 2023年 / 80卷 / 12期

关键词：

Hg2+; Electrochemiluminescence; Aptasensor; Luminol; Nanocomposites; ELECTROCHEMICAL BIOSENSOR; SELECTIVE DETECTION; QUANTUM DOTS; MERCURY ION; ASSAY; REMOVAL; SENSORS;

D O I：

10.1007/s00289-023-04687-8

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

It is of great significance for human health and environmental monitoring to establish an ultrasensitive assay method for Hg2+. In this work, a label-free and highly sensitive electrochemiluminescence (ECL) aptasensor was developed for the sensitive and selective detection of Hg2+ without additional coreactants. Poly (aniline-luminol)/graphene oxide (P(ANi-Lu)/GO) nanocomposites were prepared, and chitosan (CS) was used to modify the surface of the material positively charged. The prepared P(ANi-Lu)/GO/CS was characterized by scanning electron microscopy (TEM), UV-Vis absorption spectra, fluorescence spectra and electrochemical impedance spectroscopy. The P(ANi-Lu)/GO/CS exhibited a stable and excellent electrochemiluminescence (ECL) property. Aptamer was adsorbed on P(ANi-Lu)/GO/CS sensing interface through electrostatic interaction, and Hg2+ was detected using T-Hg2+-T configuration as ECL intensity controller. The results showed that Hg2+ can be quantitatively determined in the range of 1.0 x 10(-15) similar to 1.0 x 10(-7) M with a detection limit of 4.8 x 10(-16) M.

引用

页码：12945 / 12958

页数：14

共 38 条

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