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J. Phys. Chem. C 2009, 113, 9804–9813
Synthesis of Highly Selective Magnetic Mesoporous Adsorbent Xinqing Chen,† Koon Fung Lam,† Qingjian Zhang,‡ Bingcai Pan,‡ Manuel Arruebo,§ and King Lun Yeung*,† Department of Chemical and Biomolecular Engineering, Hong Kong UniVersity of Science and Technology, Hong Kong, P. R. China, State Key Laboratory of Pollution Control and Resource Reuse, School of EnVironment, Nanjing UniVersity, Nanjing 210093, P. R. China, and Aragon Nanoscience Institute (INA), UniVersity of Zaragoza, 50009 Zaragoza, Spain ReceiVed: February 27, 2009; ReVised Manuscript ReceiVed: April 17, 2009
Magnetic MCM-41 of large surface area (ca. 800 m2 g-1) and high magnetization (ca. 8.3 emu g-1) was prepared at a reasonable iron oxide nanoparticles loading of 10 wt % by a two-step synthesis process. The 8 nm iron oxide nanoparticles (i.e., 30 m2 g-1) were embedded in the MCM-41 with no observable effects on the particle morphology and pore symmetry, but a slight change (i.e.,
