Preparation of novel magnetic hollow mesoporous silica microspheres and their efficient adsorption
Preparation of novel magnetic hollow mesoporous silica microspheres and their efficient adsorption
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DOI：
10.1016/j.jcis.2012.06.088
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发表时间：
2012-11-15
影响因子：
9.9
通讯作者：
Wang, Yilong
中科院分区：
文献类型：
--
作者：
Wang, Fangyingkai;Tang, Yulin;Wang, Yilong
以壳壳磁性硅球为模板，包覆四乙氧基硅烷(TEOS)/十六烷基三甲氧基硅烷（C16TMS）杂化膜，成功制备了磁性中空介孔硅微球（mhms）。通过TEM、SEM、XRD、BET和VSM表征研究了mhms的微观结构和性能。MHMSs的平均直径约为300 nm，介孔壳厚度约为70 nm。11 nm的磁铁矿纳米颗粒均匀嵌入介孔二氧化硅壳中。同时，对罗丹明B进行了吸附分离实验，验证了该材料可作为吸附剂。(c) 2012 Elsevier Inc.版权所有。
Magnetic hollow mesoporous silica microspheres (MHMSs) were successfully prepared by employing yolk-shell magnetic silica spheres as the template together with the coating of tetraethoxysilane (TEOS)/hexadecyl trimethoxysilane (C16TMS) hybrid. The microstructure and properties of MHMSs were studied by TEM, SEM, XRD, BET, and VSM characterizations. The average diameter of MHMSs was about 300 nm and the mesoporous shell thickness was totally around 70 nm. The 11 nm magnetite nanoparticles were homogeneously embedded in the mesoporous silica shell. Meanwhile, the adsorption and separation process of Rhodamine B were carried out to demonstrate that the material could be used for the adsorbent. (c) 2012 Elsevier Inc. All rights reserved.