蠕虫状孔道介孔SiO_2的合成及其固定化漆酶的活性

doi:10.6023/A12100836

CORC > 北京大学 > 环境科学与工程学院

	蠕虫状孔道介孔SiO_2的合成及其固定化漆酶的活性; Synthesis of Worm-like Mesoporous Silica and Enzymatic Activity of the Immobilized Laccase
	张剑波 ; 杨宇翔 ; 田美娟 ; 邓常健 ; 曹磊 ; 袁宏明
刊名	化学学报
	2013
关键词	蠕虫状介孔扩孔降解效率重复利用性 2 4-DCP worm-like mesoporous silica pore-expanding 2,4-DCP degradation efficiency reusability
DOI	10.6023/A12100836
英文摘要	以聚环氧乙烷-聚环氧丙烷-聚环氧乙烷三嵌段共聚物(P123)与离子型助表面活性剂{十六烷基三甲基溴化铵(CTAB)、十二烷基硫酸钠(SDS)或N-肉豆蔻酰-D-丙氨酸(C14-D-A)}为结构导向剂,合成了蠕虫状孔道的介孔SiO2,并在P123/C14-D-A/TMAPS(N-三甲氧基硅丙基-N,N,N-三甲基氯化铵)合成反应体系中,研究了扩孔剂聚乙二醇(PEG)-400的不同添加量对蠕虫状孔道的扩孔效果.合成的产物分别用X-射线衍射(XRD)、扫描电镜(SEM)、透射电镜(TEM)和N2吸附进行表征.此外,利用溶剂萃取法对扩孔后的蠕虫状介孔SiO2进行处理,得到不同孔径的季铵盐官能团化介孔S...; Mesoporous silica with worm-like pore channels was synthesized using mixed P123 (polyethyleneoxide-polypropylene oxide-polyethylene oxide triblock copolymer EO20PO70EO20) and ionic cosurfactant {CTAB, SDS or N-myristoyl-D-alanine (C-14-D-A)} as a structure-directing agent, and the pore-expanding effect of different amount of PEG-400 on the worm-like pore channels was studied. The synthesized products were characterized using X-ray diffraction, scanning electron microscopy, transmission electron microscopy, and nitrogen sorption analysis. Moreover, the worm-like pore-expanded mesoporous silica was extracted with solvent, and the obtained quaternary ammonium functionalized mesoporous silica with different pore size was applied to immobilize laccase respectively. The stability of immobilized laccase, the optimum pH value acquired and reusability for the degradation of 2,4-DCP were also studied. Through comparative studies, it is found that, matching of sizes between the enzyme molecule and the pore diameter of the mesoporous silica, is essential for specific activity of immobilized laccase and degradation efficiency of 2,4-DCP by immobilized laccase.; http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000318258800019&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701 ; SCI(E); 中文核心期刊要目总览(PKU); 中国科技核心期刊(ISTIC); 中国科学引文数据库(CSCD); 6; 04; 602-612; 71
语种	中文
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/4073]
专题	环境科学与工程学院
推荐引用方式 GB/T 7714	张剑波,杨宇翔,田美娟,等. 蠕虫状孔道介孔SiO_2的合成及其固定化漆酶的活性, Synthesis of Worm-like Mesoporous Silica and Enzymatic Activity of the Immobilized Laccase[J]. 化学学报,2013.
APA	张剑波,杨宇翔,田美娟,邓常健,曹磊,&袁宏明.(2013).蠕虫状孔道介孔SiO_2的合成及其固定化漆酶的活性.化学学报.
MLA	张剑波,et al."蠕虫状孔道介孔SiO_2的合成及其固定化漆酶的活性".化学学报 (2013).