Sensitive fluorescent probe based on combination of magnetic molecularly imprinted materials and carbon dots derived from prussian blue for p-aminoazobenzene in environmental samples

被引:11
作者
Li, Shuangying [1 ]
Zhou, Qingxiang [1 ]
Li, Zhi [1 ]
Liu, Menghua [1 ]
Li, Yanhui [1 ]
Chen, Chunmao [1 ]
机构
[1] China Univ Petr, Coll Chem Engn & Environm, State Key Lab Heavy Oil Proc, Beijing 102249, Peoples R China
关键词
Carbon dots; Prussian blue; p-Aminoazobenzene; Magnetic molecularly imprinting; Fluorescent probe; Magnetic solid phase extraction; QUANTUM DOTS; POLYMERS; SURFACE;
D O I
10.1016/j.jclepro.2023.136827
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
In this work, an effective fluorescent probe for analysis of p-aminoazobenzene (p-AZO) was established with carbon dots (CDs) and magnetic molecularly imprinted nanomaterial, in which CDs and the magnetic nanomaterial were simultaneously derived from prussian blue (PB) by one-pot hydrothermal method. The sensitivity of the constructed probe is greatly improved owing to the introduction of magnetic solid phase extraction. Factors affecting the enrichment efficiency and detection performance of p-AZO were optimized. Under optimal conditions, the probe exhibited good selectivity and sensitivity for p-AZO. Good linearity was achieved in the range of 2-600 nmol L-1. Low detection limit for p-AZO was 1 nmol L-1. Satisfactory recoveries in the range of 95.8-98.7% were obtained at two spiked concentrations of 0.02 and 0.1 mu mol L-1, indicating that the probe established with CDs and MMIPs based MSPE was reliable and robust for determination of p-AZO in real water samples.
引用
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页数:9
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