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A novel fluorescent molecularly imprinted polymer SiO2@CdTe QDs@MIP for paraquat detection and adsorption
Luminescence ( IF 3.2 ) Pub Date : 2020-09-17 , DOI: 10.1002/bio.3949 Jiadi Sun 1, 2 , Chen Chen 1 , Yinzhi Zhang 1 , Xiulan Sun 1
Luminescence ( IF 3.2 ) Pub Date : 2020-09-17 , DOI: 10.1002/bio.3949 Jiadi Sun 1, 2 , Chen Chen 1 , Yinzhi Zhang 1 , Xiulan Sun 1
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Paraquat (PQ) residue is harmful for human health, agriculture, and the aquatic environment. This paper proposes a novel fluorescent molecularly imprinted polymer (MIP), SiO2@CdTe QDs@MIP, for PQ detection and adsorption. The MIP was synthesized using 3‐aminopropyltriethoxysilane as the functional monomer, 4,4′‐bipyridyl as the template molecule, and tetraethoxysilane as the cross‐linker. In addition, CdTe quantum dots featuring unique optical characteristics and excellent photochemical stability were combined as signal reporter. The synthesized MIP had a Brunauer–Emmett–Teller surface area of 68.2 m2/g, pore volume of 0.42 cm3/g and pore size of 6.9 nm, demonstrating the potential for both PQ detection and adsorption. For PQ detection, the MIP could achieve three orders of magnitude better than the limit of detection, and one order of magnitude wider detection range than existing methods. The PQ recovery values for real samples of water and corn were 96.4–102.1% and 93.9–97.3%, respectively. The amount of PQ detected by the MIP was within 98.05% on average of that using high‐performance liquid chromatography. For PQ adsorption, the MIP had an adsorption capacity of 3.36 mg/g, and followed a pseudo‐second‐order kinetic model with excellent toxicological characteristics. Overall, the novel SiO2@CdTe QDs@MIP proposed in this paper could facilitate an efficient and convenient method for PQ detection and adsorption.
中文翻译：
新型荧光分子印迹聚合物SiO2 @ CdTe QDs @ MIP用于百草枯的检测和吸附
百草枯（PQ）残留物对人体健康，农业和水生环境有害。本文提出了一种新型的荧光分子印迹聚合物（MIP）SiO 2 @CdTe QDs @ MIP，用于PQ的检测和吸附。MIP是使用3-氨基丙基三乙氧基硅烷作为功能单体，4,4'-联吡啶基作为模板分子，四乙氧基硅烷作为交联剂合成的。此外，结合了具有独特光学特性和优异光化学稳定性的CdTe量子点作为信号报告分子。合成的MIP的Brunauer-Emmett-Teller表面积为68.2 m 2 / g，孔体积为0.42 cm 3/ g和6.9 nm的孔径，证明了PQ检测和吸附的潜力。对于PQ检测，MIP可以达到比检测极限好三个数量级的结果，并且比现有方法要宽一个数量级的检测范围。水和玉米的实际样品的PQ回收率分别为96.4–102.1％和93.9–97.3％。MIP检测到的PQ量平均为使用高效液相色谱法检测的PQ量的98.05％以内。对于PQ吸附，MIP的吸附容量为3.36 mg / g，并遵循具有优异毒理学特性的伪二级动力学模型。总体而言，本文提出的新型SiO 2 @CdTe QDs @ MIP可以为高效，便捷的PQ检测和吸附方法提供便利。
更新日期：2020-09-17
中文翻译：
新型荧光分子印迹聚合物SiO2 @ CdTe QDs @ MIP用于百草枯的检测和吸附
百草枯（PQ）残留物对人体健康，农业和水生环境有害。本文提出了一种新型的荧光分子印迹聚合物（MIP）SiO 2 @CdTe QDs @ MIP，用于PQ的检测和吸附。MIP是使用3-氨基丙基三乙氧基硅烷作为功能单体，4,4'-联吡啶基作为模板分子，四乙氧基硅烷作为交联剂合成的。此外，结合了具有独特光学特性和优异光化学稳定性的CdTe量子点作为信号报告分子。合成的MIP的Brunauer-Emmett-Teller表面积为68.2 m 2 / g，孔体积为0.42 cm 3/ g和6.9 nm的孔径，证明了PQ检测和吸附的潜力。对于PQ检测，MIP可以达到比检测极限好三个数量级的结果，并且比现有方法要宽一个数量级的检测范围。水和玉米的实际样品的PQ回收率分别为96.4–102.1％和93.9–97.3％。MIP检测到的PQ量平均为使用高效液相色谱法检测的PQ量的98.05％以内。对于PQ吸附，MIP的吸附容量为3.36 mg / g，并遵循具有优异毒理学特性的伪二级动力学模型。总体而言，本文提出的新型SiO 2 @CdTe QDs @ MIP可以为高效，便捷的PQ检测和吸附方法提供便利。
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