Surfactant assisted Cr-metal organic framework for the detection of bisphenol A in dust from E-waste recycling area

Zhi Li; Jiayue Hu; Yongguang Xiao; Qingbing Zha; Lixi Zeng; Mingshan Zhu

doi:10.1016/j.aca.2020.11.021

Surfactant assisted Cr-metal organic framework for the detection of bisphenol A in dust from E-waste recycling area

Anal Chim Acta. 2021 Feb 15:1146:174-183. doi: 10.1016/j.aca.2020.11.021. Epub 2020 Nov 20.

Authors

Zhi Li¹, Jiayue Hu¹, Yongguang Xiao², Qingbing Zha³, Lixi Zeng¹, Mingshan Zhu⁴

Affiliations

¹ Guangdong Key Laboratory of Environmental Pollution and Health, School of Environment, Jinan University, Guangzhou, 511443, PR China.
² Institute of Photonics Technology, Jinan University, Guangzhou, 511443, PR China.
³ Department of Fetal Medicine, First Affiliated Hospital of Jinan University, Guangzhou, 510630, PR China.
⁴ Guangdong Key Laboratory of Environmental Pollution and Health, School of Environment, Jinan University, Guangzhou, 511443, PR China. Electronic address: zhumingshan@jnu.edu.cn.

PMID: 33461714
DOI: 10.1016/j.aca.2020.11.021

Abstract

Due to their highly porous structures, metal organic framework materials are widely used in analytic areas. In this paper, Cr-metal organic framework (MIL-101(Cr)) modified electrode was prepared and then was used as electrochemical sensor for the detection of bisphenol A (BPA). By using one kind of surfactant of cetyltrimethylammonium bromide (CTAB), the analytic performances of MIL-101 (Cr) towards BPA detection were greatly improved. Compared with pure MIL-101 (Cr), the differential pulse voltammetry (DPV) behavior of CTAB/MIL-101 (Cr) was improved 3.0 times in the presence of BPA. The hydrophobic long chain alkanes of CTAB can improve the enrichment and electrochemical oxidation for BPA. The CTAB/MIL-101 (Cr) sensor exhibited a linear range from 20 to 350 nM and a low detection limit of 9.95 nM (LOD = 3s_b/S) and showed good reproducibility, stability and selectivity. Finally, real samples of dusts from E-waste recycling area in South China were collected and the CTAB/MIL-101 (Cr) sensor demonstrated satisfactory results for BPA detection from these dust samples.

Keywords: Bisphenol A; Electrochemical sensor; Interfacial electron transfer; Metal-organic frameworks; Surfactant.