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Degradation of 2,4-dichlorophenol catalyzed by the immobilized laccase with the carrier of Fe3O4@MSS–NH2 |
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| Authors: | Yan Huang Yanjie Xi Yuxiang Yang Cheng Chen Hongming Yuan Xiangnong Liu |
| Institution: | 1. School of Chemistry and Molecular Engineering, East China University of Science & Technology, Shanghai, 200237, China 2. State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun, 130012, China 3. Analysis Test Center, Yangzhou University, Yangzhou, 225009, China |
| Abstract: | 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 1H-NMR and 13C-NMR experiments, further demonstrating the degradation mechanism of 2,4-DCP by the immobilized laccase. |
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