Au/TiO2-based molecularly imprinted photoelectrochemical sensor for dibutyl phthalate detection

被引：11

作者：

Zeng, Yinan ^{[1
]}

Zhang, Min ^{[1
]}

Peng, Kefu ^{[1
]}

Man, Zu ^{[1
]}

Guo, Lu'an ^{[1
]}

Liu, Wenping ^{[1
]}

Xie, Shilei ^{[1
]}

Liu, Peng ^{[1
]}

Xie, Dong ^{[1
]}

Wang, Shoushan ^{[1
]}

Cheng, Faliang ^{[1
]}

机构：

[1] Dongguan Univ Technol, Guangdong Engn & Technol Res Ctr Adv Nanomat, Sch Environm & Civil Engn, Dongguan 523808, Peoples R China

来源：

MICROCHIMICA ACTA | 2023年 / 190卷 / 06期

基金：

中国国家自然科学基金;

关键词：

Photoelectrochemical sensor; Au/TiO2; Molecularly imprinted polymer; Dibutyl-phthalate; SOLID-PHASE EXTRACTION; SELECTIVE DETECTION; TIO2; NANOTUBES; RAMAN-SPECTRA; FABRICATION; POLYMER; NANOPARTICLES; ESTERS;

D O I：

10.1007/s00604-023-05824-w

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A photoelectrochemical molecular imprinting sensor based on Au/TiO2 nanocomposite was constructed for the detection of dibutyl phthalate. Firstly, TiO2 nanorods were grown on fluorine-doped tin oxide substrate by hydrothermal method. Then, gold nanoparticles were electrodeposited on TiO2 to fabricate Au/TiO2. Finally, molecular imprinted polymer was electropolymerized on the Au/TiO2 surface to construct MIP/Au/TiO2 PEC sensor for DBP. The conjugation effect of MIP accelerates the electron transfer between TiO2 and MIP, which can greatly improve the photoelectric conversion efficiency and sensitivity of the sensor. In addition, MIP can also provide sites for highly selective recognition of dibutyl phthalate molecules. Under optimal experimental conditions, the prepared photoelectrochemical sensor was used for the quantitative determination of DBP and the results showed a wide linear range (50 to 500 nM), a low limit of detection (0.698 nM), and good selectivity. The sensor was used in a study of real water samples to show that it has promising applications in environmental analysis.

引用

页数：9

共 46 条

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