Selective photocatalysis mediated by magnetic molecularly imprinted polymers
Selective photocatalysis mediated by magnetic molecularly imprinted polymers
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磁性分子印迹聚合物介导的选择性光催化
DOI：
10.1016/j.seppur.2012.05.004
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发表时间：
2012-07-19
影响因子：
8.6
通讯作者：
Shen, Xiantao
中科院分区：
文献类型：
--
作者：
Tang, Heqing;Zhu, Lihua;Shen, Xiantao
以4-硝基苯酚（4-NP）为模板，采用表面分子印迹法制备了新型磁性印迹粒子。TEM分析表明，聚合物具有核壳结构。VSM测试表明分子印迹聚合物具有超顺磁性，这一特性使其在环境保护中具有易于固定和分离的能力。使用这些分子印迹聚合物和商业光催化剂，我们构建了一个双域膜分子识别位点（MRS）和光催化位点（PCS）的第一次。由于MRS位于二氧化钛域附近，污染物从MRS到PCS的表面扩散很容易实现，导致高毒性目标的光分解增强。分子印迹技术与生物吸附技术的协同作用为选择性去除废水中的剧毒污染物提供了一种很有前途的方法。(C)2012 Elsevier B. V.保留所有权利。
Using 4-nitrophenol (4-NP) as template, novel magnetic imprinted particles were prepared via surface molecular imprinting. TEM graph reveals the MIPs owned a core-shell structure. VSM measurement manifests the MIPs were superparamagnetic, this feature provided the MIPs with easy fixity and separation capability when they were used in environmental protection. Using these MIPs and a commercial photocatalyst, we constructed a double-domain film with molecular recognition sites (MRS) and photocatalytic sites (PCS) for the first time. Since MRS was located in the vicinity of titanium dioxide domains, surface-diffusion of the contaminants from MRS to PCS was easily achieved, resulting in enhanced photodecomposition of the highly toxic targets. The synergistic effect of molecular imprinting and photocatalysis provides a promising method for selective removal of the highly toxic contaminants from wastewater. (C) 2012 Elsevier B.V. All rights reserved.