Monodisperse mesoporous SiO 2/Fe 3O4/SiO 2 microspheres: preparation and laccase immobilization - 文章详情页

作者：

Wang, M. (Wang, M..) (学者：王民) | Li, Q. (Li, Q..) (学者：李强) | Wei, Q. (Wei, Q..) | Nie, Z. (Nie, Z..)

收录：

Scopus PKU CSCD

摘要：

The　home-made　monodispersed　SiO　2　microspheres　with　uniform　size(250　nm)　were　coated　with　β-FeOOH　to　prepare　β-FeOOH/SiO　2　microspheres　by　liquid　deposition　method.　Then　the　SiO　2/β-FeOOH/SiO　2　microspheres,　prepared　by　coating　a　mesoporous　silica　layer　on　the　β-FeOOH/SiO　2　microspheres　with　sol-gel　method,　were　calcinated　and　reduced　to　obtain　the　final　mesoporous　SiO　2/Fe　30　4/SiO　2　microspheres.　The　magnetic　composited　microspheres　exhibited　some　good　properties,　such　as　high　surface　area　(391.067　m　2/g),　large　pore　(0.53　cm　3/g),　high　saturation　magnetization　(14.715　emu/g)　and　low　coercivity　(109　Oe).　Furthermore　the　mesoporous　SiO　2/Fe　3O　4/SiO　2　microspheres　were　used　as　a　carrier　to　immobilize　the　laccase.　The　surface　area　and　the　pore　volume　of　the　composite　microsphereas　decreased　to　103　m　2/g　and　0.37　cm　3/g,　respectively,　after　immobilizing　laccase.　The　adsorbance　amount　of　laccase　in　mesoporous　material　was　about　202.6　mg/g.

关键词：

Immobilization; Laccase; Mesoporous silica; Nanometer

作者机构：

[ 1 ] [Wang, M.]College of Materials Science and Engineering, Beijing University of Technology, Beijing 100124, China
[ 2 ] [Li, Q.]College of Materials Science and Engineering, Beijing University of Technology, Beijing 100124, China
[ 3 ] [Wei, Q.]College of Materials Science and Engineering, Beijing University of Technology, Beijing 100124, China
[ 4 ] [Nie, Z.]College of Materials Science and Engineering, Beijing University of Technology, Beijing 100124, China

通讯作者信息：

李强
[Li, Q.]College of Materials Science and Engineering, Beijing University of Technology, Beijing 100124, China

电子邮件地址：

qyli@bjut.edu.cn

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