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个人信息Personal Information
副教授
硕士生导师
性别：男
毕业院校：中国科学院研究生院
学位：博士
所在单位：化工海洋与生命学院
学科：环境科学. 分析化学
办公地点：盘锦校区D05-407
联系方式：wumh@dlut.edu.cn
电子邮箱：wumh@dlut.edu.cn
Fabrication and Application of Magnetically Catalytic Imprinting Nanozymes
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论文类型：期刊论文
发表时间：2020-07-23
发表刊物：CHEMISTRYSELECT
收录刊物：SCIE
卷号：5
期号：27
页面范围：8284-8288
ISSN号：2365-6549
关键字：Heterogeneous catalysis; Imprinting; Fe3O4; Nanoparticles; Polypyrrole
摘要：Nanozymes exhibit excellent enzyme-like activities but lack specificity. Here, molecularly imprinted polymers (MIPs) based on polypyrrole (PPy) and using methylene blue (MB) as template were grown on Fe(3)O(4)nanozymes to enhance the catalytic selectivity. The obtained composite Fe3O4@PPy MIPs were characterized using a scanning electron microscope, transmission electron microscope, powder X-ray diffractometer, and vibrating sample magnetometer. The PPy-encapsulated Fe(3)O(4)nanozymes retained their catalytic ability and almost completely removed MB within 30 min in the presence of sodium persulfate. In comparison with bare Fe(3)O(4)nanozymes, the Fe3O4@PPy MIPs showed superior catalytic selectivity for MB. The apparent rate constants (k(app)) for MB, rhodamine B, and methyl orange were 0.073, 0.035, and 0.012 min(-1), respectively. Even after five recycling steps, the obtained Fe3O4@PPy MIPs could degrade more than 80% of MB.
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