USPIO assisting degradation of MXC by host/guest-type immobilized   laccase in AOT reverse micelle system

doi:10.1007/s11356-016-6502-y

CORC > 北京大学 > 环境科学与工程学院

	USPIO assisting degradation of MXC by host/guest-type immobilized laccase in AOT reverse micelle system
	Yang, Yu-Xiang ; Pi, Na ; Zhang, Jian-Bo ; Huang, Yan ; Yao, Ping-Ping ; Xi, Yan-Jie ; Yuan, Hong-Ming
刊名	ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
	2016
关键词	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
DOI	10.1007/s11356-016-6502-y
英文摘要	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
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/434336]
专题	环境科学与工程学院
推荐引用方式 GB/T 7714	Yang, Yu-Xiang,Pi, Na,Zhang, Jian-Bo,et al. USPIO assisting degradation of MXC by host/guest-type immobilized laccase in AOT reverse micelle system[J]. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH,2016.
APA	Yang, Yu-Xiang.,Pi, Na.,Zhang, Jian-Bo.,Huang, Yan.,Yao, Ping-Ping.,...&Yuan, Hong-Ming.(2016).USPIO assisting degradation of MXC by host/guest-type immobilized laccase in AOT reverse micelle system.ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH.
MLA	Yang, Yu-Xiang,et al."USPIO assisting degradation of MXC by host/guest-type immobilized laccase in AOT reverse micelle system".ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH (2016).