Enzyme@silica nanoflower@metal-organic framework hybrids: A novel type of integrated nanobiocatalysts with improved stability

被引：46

作者：

Du, Yingjie ^{[1
]}

Gao, Jing ^{[1
,2
]}

Liu, Huajiao ^{[1
]}

Zhou, Liya ^{[1
]}

Ma, Li ^{[1
]}

He, Ying ^{[1
]}

Huang, Zhihong ^{[1
]}

Jiang, Yanjun ^{[1
,2
]}

机构：

[1] Hebei Univ Technol, Sch Chem Engn & Technol, 8 Guangrong Rd, Tianjin 300130, Peoples R China

[2] Hebei Univ Technol, Hebei Prov Key Lab Green Chem Technol & High Effi, 8 Guangrong Rd, Tianjin 300130, Peoples R China

来源：

NANO RESEARCH | 2018年 / 11卷 / 08期

基金：

中国国家自然科学基金;

关键词：

silica nanoflower; metal-organic framework; hybrids; nanobiocatalyst; immobilization; ZEOLITIC IMIDAZOLATE FRAMEWORKS; PENICILLIN-G ACYLASE; CORE-SHELL; COVALENT IMMOBILIZATION; GOLD NANOPARTICLES; FACILE SYNTHESIS; PERFORMANCE; CATALASE; BIOCATALYSTS; CATALYSIS;

D O I：

10.1007/s12274-018-2027-7

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A novel integrated nanobiocatalyst system based on an enzyme@silica nanoflower@metal-organic framework (enzyme@SNF@ZIF-8) structure with improved stability is fabricated for the first time. The versatility of this system is validated using penicillin G acylase (PGA) and catalase (CAT) as model enzymes. The microporous ZIF-8 layer can be controlled by varying the number of ZIF-8 coating cycles, which produces PGA@SNF@ZIF-8 nanobiocatalysts with different ZIF-8 layer thicknesses. After the second ZIF-8 coating cycle, a PGA@SNF@ZIF-8(2) structure with a homogeneous and well-intergrown ZIF-8 layer is formed, which possesses excellent mechanical and chemical stability. Moreover, PGA@SNF@ZIF-8(2) shows improved thermal/storage stability and reusability compared with free PGA and PGA immobilized on silica nanoflowers (PGA@SNF). The obtained CAT-based nanobiocatalysts (CAT@SNF@ZIF-8(2)) also show excellent catalytic performance.

引用

页码：4380 / 4389

页数：10

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