Pore Controllable Regulation and Laccase Immobilization of Hollow Mesoporous SiO2/Fe3O4 Microspheres
Li, Q; Zhu, Q; Wei, Qi; Nie, Z
| HERO ID | 2903963 |
|---|---|
| In Press | No |
| Year | 2014 |
| Title | Pore Controllable Regulation and Laccase Immobilization of Hollow Mesoporous SiO2/Fe3O4 Microspheres |
| Authors | Li, Q; Zhu, Q; Wei, Qi; Nie, Z |
| Journal | Advanced Materials Research |
| Volume | 833 |
| Page Numbers | 93-98 |
| Abstract | Hollow magnetic mesoporous SiO2/Fe3O4 microspheres with different mesopore sizes were synthesized by a simple multi-step solution growth process. In the experiment of coating mesoporous SiO2, cetyltrimethylammonium bromide (CTAB) was used as surfactant and two swelling agents, decane and 1, 3, 5- trimethylbenzene (TMB), were used as swelling agents alone or together with different sequence. The results showed that the magnetic mesoporous SiO2/Fe3O4 microspheres have a saturation magnetization of 13.6 emu-g(-1) and a low coercivity (50 Oe). Different adding form of swelling agents had great effect on the microstructure of mesoporous SiO2/Fe3O4 microspheres. The mesoporous SiO2/Fe3O4 microspheres obtained by using two swelling agents together had better mesoporous properties. The mesoporous SiO2/Fe3O4 microspheres exhibited high surface area (850 m(2).g(-1)), large peak pore (3.11 nm), high pore volume (1.23 cm(3).g(-1)). Moreover, the composite microspheres had larger adsorption amount (276 mg/g) and quicker adsorption rate (0.178 g/(mg.h)) of laccase. |
| Doi | 10.4028/www.scientific.net/AMR.833.93 |
| Wosid | WOS:000337003400022 |
| Is Certified Translation | No |
| Dupe Override | No |
| Is Public | Yes |
| Keyword | Magnetic Mesoporous SiO2; TMB; Decane; Laccase |