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

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

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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.

silica nanoflowermetal-organic frameworkhybridsnanobiocatalystimmobilization

Yingjie Du、Jing Gao、Huajiao Liu、Liya Zhou、Li Ma、Ying He、Zhihong Huang、Yanjun Jiang

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School of Chemical Engineering and Technology, Hebei University of Technology, 8 Guangrong Road, Hongqiao District, Tianjin 300130, China

Hebei Provincial Key Lab of Green Chemical Technology and High Efficient Energy Saving, Hebei University of Technology, 8 Guangrong Road, Hongqiao District, Tianjin 300130, China

This work was supported by the National Natural Science Foundation of ChinaThis work was supported by the National Natural Science Foundation of ChinaThis work was supported by the National Natural Science Foundation of ChinaThis work was supported by the National Natural Science Foundation of ChinaNatural Science Foundation of Tianjin CityNatural Science Foundation of Hebei ProvinceNatural Science Foundation of Hebei ProvinceNatural Science Foundation of Hebei ProvinceNatural Science Foundation of Hebei ProvinceProgram for Top 100 Innovative Talents in Colleges and Universities of Hebei ProvinceHebei High Level Personnel of Support ProgramGraduate Innovation Support Program in Hebei Province

21576068212760602127606216JCYBJC19800B2015202082B2016202027B2017202056SLRC2017029A2016002027CXZZSS2017024

2018

纳米研究(英文版)

纳米研究(英文版)

CSTPCDCSCDEI
ISSN：
年,卷(期)：2018.11(8)
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