Academic Journal
USPIO assisting degradation of MXC by host/guest-type immobilized laccase in AOT reverse micelle system
| العنوان: | USPIO assisting degradation of MXC by host/guest-type immobilized laccase in AOT reverse micelle system |
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| المؤلفون: | Yang, Yu-Xiang, Pi, Na, Zhang, Jian-Bo, Huang, Yan, Yao, Ping-Ping, Xi, Yan-Jie, Yuan, Hong-Ming |
| المساهمون: | Yang, YX, Huang, Y (reprint author), E China Univ Sci & Technol, Sch Chem & Mol Engn, Shanghai 200237, Peoples R China., E China Univ Sci & Technol, Sch Chem & Mol Engn, Shanghai 200237, Peoples R China., Peking Univ, Dept Environm Sci, Beijing 100871, Peoples R China., Jilin Univ, Coll Chem, State Key Lab Inorgan Synth & Preparat Chem, Changchun 130012, Peoples R China. |
| المصدر: | PubMed ; SCI |
| بيانات النشر: | ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH |
| سنة النشر: | 2016 |
| المجموعة: | Peking University Institutional Repository (PKU IR) / 北京大学机构知识库 |
| مصطلحات موضوعية: | Tubularmesoporous silica, Ultrasmall superparamagnetic iron oxide nanoparticles, Host/guest-type immobilized laccase, Degradation, Methoxychlor, LIGNIN PEROXIDASE, CARBON NANOTUBES, NANOPARTICLES, PERFORMANCE, ENZYMES, DEMETHYLATION, IMPROVEMENT, SUPEROXIDE, ACTIVATION, ADSORPTION |
| الوصف: | The laccase and ultrasmall superparamagnetic iron oxide nanoparticles (USPIO) have been assembled inside the tubular mesoporous silica via co-adsorption technology to prepare host/guest-type immobilized laccase, which is applied to degrade methoxychlor (MXC) in aqueous and reverse micelle environments. The effects of various parameters on degradation of MXC were studied. Under the optimum conditions, the degradation rate could reach maximum value of 45.6 % and remain at 20.8 % after seven cycles. Moreover, the addition of small molecular compound 2, 2'-azinobis-(3-ethylbenzthiazoline-6-sulphonate) to the system could greatly improve the degradation efficiency. The MXC degradation process is a first-order reaction, and the activation energy of MXC degradation catalyzed by immobilized laccase (41.46 kJ mol(-1)) is relatively lower than that catalyzed by free laccase (44.91 kJ mol(-1)). Based on the degradation products measured by gas chromatograph-mass spectrometer (GC-MS) and nuclear magnetic resonance (NMR), the degradation mechanism of MXC has also been proposed. ; National Natural Science Foundation of China [20577010, 20971043]; Open Project Program of State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, Jilin University ; SCI(E) ; PubMed ; ARTICLE ; yxyang@ecust.edu.cn; huangyan@ecust.edu.cn ; 13 ; 13342-13354 ; 23 |
| نوع الوثيقة: | journal/newspaper |
| اللغة: | English |
| تدمد: | 0944-1344 1614-7499 |
| Relation: | ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH.2016,23(13),13342-13354.; 1390209; http://hdl.handle.net/20.500.11897/434336; WOS:000378817300069 |
| DOI: | 10.1007/s11356-016-6502-y |
| الاتاحة: | https://hdl.handle.net/20.500.11897/434336 https://doi.org/10.1007/s11356-016-6502-y |
| رقم الانضمام: | edsbas.E4BBE5C3 |
| قاعدة البيانات: | BASE |
Full Text Finder | تدمد: | 09441344 16147499 |
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| DOI: | 10.1007/s11356-016-6502-y |