Water-compatible halloysite-imprinted polymer by Pickering emulsion polymerization for the selective recognition of herbicides
Water-compatible halloysite-imprinted polymer by Pickering emulsion polymerization for the selective recognition of herbicides
复制标题
通过皮克林乳液聚合制备水相容性埃洛石印迹聚合物用于选择性识别除草剂
DOI：
10.1002/jssc.201401469
复制
发表时间：
2015-04-01
影响因子：
3.1
通讯作者：
Zhong, Shian
中科院分区：
文献类型：
--
作者：
Zhou, Chengyun;Li, Huan;Zhong, Shian
使用埃洛石纳米管作为稳定的固体颗粒，通过皮克林乳液聚合制备了水相容性分子印迹聚合物。聚合过程中，以4-乙烯基吡啶为单体，二乙烯基苯为交联剂，甲苯为致孔剂，2,2-偶氮二异丁腈为引发剂，2,4-二氯苯氧基乙酸为模板剂形成油相，Triton X-100水溶液形成水相。通过傅里叶变换红外光谱和扫描电子显微镜对埃洛石纳米管分子印迹聚合物进行了表征。动力学和平衡结合也用于评估印迹聚合物的吸附性能。与在甲苯中重新结合相比，印迹聚合物在纯水中对 2,4-二氯苯氧基乙酸表现出更好的选择性和更快速的动力学结合（60 分钟）。印迹聚合物作为吸附剂从水中富集和分离2,4-二氯苯氧基乙酸，并通过高效液相色谱和紫外检测器进行检测。
A water-compatible molecularly imprinted polymer was prepared by Pickering emulsion polymerization using halloysite nanotubes as stabilized solid particles. During polymerization, we used 4-vinylpyridine as monomer, divinylbenzene as cross-linking agent, toluene as porogen, 2,2-azobisisobutyronitrile as initiator, 2,4-dichlorophenoxyacetic acid as template to form the oil phase, and Triton X-100 aqueous solution to form the water phase. The halloysite nanotubes molecularly imprinted polymer was characterized by Fourier transform infrared spectroscopy and scanning electron microscopy. Kinetic and equilibrium bindings were also employed to evaluate the adsorption properties of the imprinted polymer. The imprinted polymer showed better selectivity, more rapid kinetic binding (60 min) for 2,4-dichlorophenoxyacetic acid in pure water compared with rebinding in toluene. The imprinted polymer was used as a sorbent to enrich and separate 2,4-dichlorophenoxyacetic acid from water, and was detected by high-performance liquid chromatography with UV detection.