文献类型：期刊文献

英文题名：Degradation of 2,4-dichlorophenol catalyzed by the immobilized laccase with the carrier of Fe3O4@MSS-NH2

作者：Huang, Yan[1];Xi, Yanjie[1];Yang, Yuxiang[1];Chen, Cheng[1];Yuan, Hongming[2];Liu, Xiangnong[3]

机构：[1]E China Univ Sci & Technol, Sch Chem & Mol Engn, Shanghai 200237, Peoples R China;[2]Jilin Univ, Coll Chem, State Key Lab Inorgan Synth & Preparat Chem, Changchun 130012, Peoples R China;[3]Yangzhou Univ, Anal Test Ctr, Yangzhou 225009, Peoples R China

年份：2014

卷号：59

期号：5-6

起止页码：509

外文期刊名：CHINESE SCIENCE BULLETIN

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000331563100008)】；

基金：This work was supported by the National Natural Science Foundation of China (20577010, 20971043) and the Open Project Program of State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, Jilin University.

语种：英文

外文关键词：Fe3O4@MSS-NH2; Immobilized laccase; Degradation efficiency; Repeatability; Degradation mechanism

摘要：With the Fe3O4@MSS (magnetic mesoporous silica spheres)-NH2 as the carrier and the glutaraldehyde as crosslinking agent, the immobilized laccase has been prepared and characterized by XRD, IR, SEM and BET etc. Under the optimal conditions, the removal efficiency of 2,4-DCP reached 88 % and the removal efficiency still remained 61.5 % after five cycles of operations. In virtue of GC-MS analysis, 2,5-dimethoxyl-1,4-quinone, 2-chlorine-1,4-dimethoxyl benzene, 3,3'-dichlorine-4,4'-dimethoxyl biphenyl, maleic acid phenol ester, and three kinds of maleic acid, alcohol ester, and para-hydroxyl phenol ester compounds have been identified as intermediate and final degradation products of 2,4-DCP, respectively. Besides, the degradation products of 2,4-DCP have been confirmed by performing the H-1-NMR and C-13-NMR experiments, further demonstrating the degradation mechanism of 2,4-DCP by the immobilized laccase.