PREPARAT IO N O F SURFACE FUNCT IO NAL IZED M ESO PO RO US M AGNET IC CARR IER AND PRO PERT IES O F AD SO RPT IO N TO CO PPER IO N

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1 ( ) Nov JOURNAL OF SOUTH CH INA NORMAL UN IVERSITY (NATURAL SC IENCE ED ITION) No. 4, 2006 : (2006) , 1, 13, 1, 1, 1, 1, 2 (1., ; 2., ) :. (CTAB), ( ), (3 - APTES) Fe 3 O 4... : ; ; : O62 : A PREPARAT IO N O F SURFACE FUNCT IO NAL IZED M ESO PO RO US M AGNET IC CARR IER AND PRO PERT IES O F AD SO RPT IO N TO CO PPER IO N HUANG Gui - hua 1, YIN Xia 1, ZHANG W ei - guang 13, HE Xiao - jing 1, CEHNG W en 1, FAN Jun 1, XU Zheng - he 1, 2 (1. School of Chem istry & Environment, South China Normal University, Guangzhou , China; 2. Department of Chem ical & Material Engineering, University of A lberta, Edmonton, A lberta T6G 2G6, Canada) Abstract: Nanostructured mesoporous m agnetic carrier has extensive app lication in the sep2 aration, biological medical, p recious metal recovery. In this paper cetyl - trimethyl ammonium brom ide was used as a temp late to fabricate core - shell m esoporous magnetic nanocompos2 ites with a core of magnetite and a silica shell, and the 3 - am inop ropyl triethoxysilane was used as a surface functionalized group which was linked on the surface of m - Fe 3 O 4 parti2 cles. The synthesized samp les were characterized by FTIR, Transm ission Electron M icros2 copy ( TEM ), TG, surface area test etc. App lication shows that surface functionalized meso2 porous magnetic carrier can effectively adsorb Cu 2 + in the solution. Key words: mesoporous magnetic carrier; silanization; copper ion : : (2003C32911) : ( ),,, 2003 ; ( ),,,,, wgzhang@ scnu. edu. cn ; ( ),,,. 3

2 4 : MCM - 41 [ 1 ], [ 2 ] [ 3 ],. [ 4 ] [ 5 ]. MCM - 41,, MCM ( MCT), [ 6-8 ], (30 nm 25 m). MCT ( 1),, Fe 2 O 3 (30 nm ) 40m 2. g - 1,,,, MCT., [ 9 ] [ 10 ] [ 11 ] [ 12 ],. 1 [ 13 ],,, MCT.,, (mesoporous magnetic carrier MMC), (3 - APTES), MMC, ( functionalized mesoporous mag2 netic carrier FMMC),,..

3 84 ( ) (98% Fe 3 O 4, < 5 m ) ( TEOS) ( 3 - APTES) [ 13 ], : g Fe 3 O ml, 30 m in, 0. 5 mol/l, ph = 12, 95 3 h,, 3, ml, 20 m in, (CTAB), 30 m in, ml 95%, 2. 5 ml TEOS,. 4 h, MMC g MMC 90 ml, 10mL3 - APTES,, 4 h,,, 2,, FMMC Perkin - Elmer FT - IR, cm - 1 KB r ; (M 6 MK 2 AA system, Thermo Electron - corporation),, ; Netzsch DSC1049, 10 /m in ; JEM100 - CX II ( ) ; M icromeritics ASAP2020, h, - 196, BJH ; Malvern Mastersize 2000, 2 m in; SK , 540 ; ph PHS - 3C ; ,. : 15 mg 25 ml 1 mol/l 12 h,,. 1,,,,,,.

4 4 : 85, / (mg. g - 1 ), Fe 3 O 4 ( ) 35 ( 2)., 1 ( ) 6. 5, 3 ( ) [ 13 ]. a, 560 cm - 1 Fe - O, b 3 ( ), 563 cm - 1, cm - 1, Si - O - Si, Fe 3 O 4, Fe 3 O 4. c, 563 cm cm - 1, cm - 1, - NH 2, cm NH 2, ,,,,. 3 5 m ( ), 10 m in - 1, 850. a,. b, 5%,, CTAB, 750, CTAB MMC m 2. g - 1,

5 86 ( ) nm. Fe 3 O 4 6 m 2. g - 1,MMC Fe 3 O 4. 5,,,, , a Fe 3 O 4, 2 m, b, 5 m, c FMMC, 10 m,, mg FMMC 25 mlph = 5. 2, 1 h,,. K d, [ 14 ] : K d = (C i - C e ) C e V M (m l g- 1 ) 6 C i, C e, V, M FMMC, 2. 2,,,. FMMC ml g - 1, mg g - 1, 6. 6 mg g - 1,.

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