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. Author manuscript; available in PMC: 2020 Jun 22.
Published in final edited form as: J Hazard Mater. 2016 Jul 1;322(Pt A):48–84. doi: 10.1016/j.jhazmat.2016.06.060

Figure 7.

Figure 7.

A new type of magnetic halloysite nanotubes molecularly imprinted polymer (MHNTs@MIP) based on halloysite nanotubes (HNTs) with embedded magnetic nanoparticles is 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 is applied as an adsorbent for sample pretreatment extraction followed by high-performance liquid chromatography detection of 2,4-D residue in water. Reprinted from Ref. [132]. Copyright 2014 Elsevier Ltd.