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Reference type: Journal
Authors: Zhong SA, Zhou CY, Zhang XN, Zhou H, Li H, Zhu XH, Wang Y
Article Title: A novel molecularly imprinted material based on magnetic halloysite nanotubes for rapid enrichment of 2,4-dichlorophenoxyacetic acid in water.
Publication date: 2014
Journal: Journal of Hazardous Materials
Volume: 276
Page numbers: 58-65.
DOI: 10.1016/j.jhazmat.2014.05.013
Alternative URL: http://www.sciencedirect.com/science/article/pii/S0304389414003483

Abstract: A new type of magnetic halloysite nanotubes molecularly imprinted polymer (MHNTs@MIP) based on halloysite nanotubes (HNTs) with embedded magnetic nanoparticles was introduced in this study. MHNTs@MIP was prepared through surface imprinting technology, using 2,4-dichlorophenoxyacetic acid (2,4-D) as a template, 4-vinylpyridine as the monomer, divinylbenzene as cross-linking agents, and 2,2-azodiisobutyronitrile as initiator. MHNTs@MIP was characterized by Fourier Transform Infrared Spectrometer, transmission electron microscopy, X-ray diffraction, and vibrating sample magnetometer. MHNTs@MIP exhibited rapid and reliable analysis with supermagnetic properties, as well as repeated use and template-specific recognition. The adsorption capacity of magnetic halloysite nanotubes non-imprinted polymer (MHNTs@NIP) and MHNTs@MIP was 10.3 mg/g and 35.2 mg/g, respectively. In the detailed discussion on specific selectivity, MHNTs@MIP can be applied as an adsorbent for sample pretreatment extraction and obtain high recoveries of about 85-94%. After extraction, high-performance liquid chromatography was used to detect 2,4-D residue in water
Template and target information: 2,4-dichlorophenoxyacetic acid, 2,4-D
Author keywords: 2,4-dichlorophenoxyacetic acid, molecularly imprinted polymer, surface imprinting, Magnetic halloysite nanotubes


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