It is of great practical importance but rarely reported to design a multifunctional scavenger for water purification. In this study, we describe a sophisticated preparation of an inorganic/organic composite sample for the simultaneous removal of anionic dyes and metal ions, as well as disinfection. The sample has a stable structure formed by the covalent connection between a magnetic silica (MS) core and a polyethylenimine derived quaternary ammonium compound (QAC) corona. We characterized the sample in details by SEM, TEM, EDX, FT-IR, XRD, TGA, VSM, and zeta potential. Our QAC-MS sample exhibited superior performance and reusability in the disinfection and adsorption experiments towards acid fuchsin and Cu²⁺. With the virtue of easy separation from solution, our sample should be an ideal candidate for water purification application.

具有重要的实践意义，但很少有报道设计用于水净化的多功能清除剂。在这项研究中，我们描述了一种无机/有机复合样品的精密制备方法，用于同时去除阴离子染料和金属离子以及进行消毒。样品具有稳定的结构，该结构由磁性二氧化硅（MS）核与聚乙烯亚胺衍生的季铵化合物（QAC）电晕之间的共价连接形成。我们通过SEM，TEM，EDX，FT-IR，XRD，TGA，VSM和Zeta电位对样品进行了详细表征。我们的QAC-MS样品在针对酸性品红和Cu ²⁺的消毒和吸附实验中表现出卓越的性能和可重复使用性。由于易于从溶液中分离，我们的样品应该是净水应用的理想选择。