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Caption : supplementary figure 1: xrd pattern of γ-fe2o3, γ-fe2o3@sio2 and 6-apa/γ-fe2o3@sio2

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Caption : supplementary figure 4: thermogravimetric (tg) and differential thermogravimetric (dtg) analyses of 6-apa/γ-fe2o3@sio2

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Caption : supplementary figure 5: vsm diagram of γ-fe2o3@sio2 and 6-apa/γ-fe2o3@sio2

File Name : figure 6s.tif

Caption : supplementary figure 6: ft-ir spectra of (a) γ-fe2o3@sio2-nh2, (b) 6-apa/γ-fe2o3@sio2, and (c) 6-apa