当前位置: X-MOL 学术Environ. Sci.: Nano › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Micromotor-assisted highly efficient Fenton catalysis by a laccase/Fe-BTC-NiFe2O4 nanozyme hybrid with a 3D hierarchical structure
Environmental Science: Nano ( IF 7.3 ) Pub Date : 2020-07-17 , DOI: 10.1039/c9en01443h
Jie Yang 1, 2, 3, 4 , Jia Li 1, 2, 3, 4 , Dickon H. L. Ng 4, 5, 6, 7, 8 , Ping Yang 1, 2, 3, 4 , Wenning Yang 1, 2, 3, 4 , Yong Liu 1, 2, 3, 4
Affiliation  

Self-propelled micro- and nanomotors are a current research focus and have shown attractive potential in environmental applications. Here, we report a biomass approach to construct a novel tubular micromotor decorated with a nanozyme/natural enzyme hybrid, which integrated the advantages of the self-propelled movement, selectivity of a natural enzyme and catalytic activity of artificial nanozymes. Such a micromotor had a unique hierarchical structure where laccase immobilized-Fe-BTC MOF nanoparticles grew uniformly on Mn2O3–NiFe2O4 nanosheets, which was constructed using natural kapok fiber as a template. This laccase-integrated Fe-BTC/NiFe2O4 micromotor was capable of self-propulsion with a speed of 120 μm s−1 by oxygen bubbles via the decomposition of H2O2 catalyzed by Mn2O3. Owing to the incorporation of autonomous motion with high selectivity of natural laccase and high peroxidase-like activity of the Fe-BTC/NiFe2O4 nanozyme, these micromotors exhibited much higher catalytic activity to methylene blue degradation than their passive counterparts. Besides as a substrate to accommodate laccase immobilized-Fe-BTC, magnetic NiFe2O4 also enabled the remote magnetic control on the movement direction.

中文翻译:

具有3D层次结构的漆酶/ Fe-BTC-NiFe2O4纳米酶杂合体的微电机辅助高效Fenton催化

自推进式微型和纳米电动机是当前的研究重点,在环境应用中显示出诱人的潜力。在这里,我们报告了一种生物质方法,以构造一种新型的管状微电机,该微电机装饰有纳米酶/天然酶杂合体,整合了自走运动,天然酶的选择性和人工纳米酶的催化活性的优点。这种微电机具有独特的层次结构,其中固定有漆酶的Fe-BTC MOF纳米颗粒在以天然木棉纤维为模板构建的Mn 2 O 3 -NiFe 2 O 4纳米片上均匀生长。这种漆酶结合的Fe-BTC / NiFe 2 O 4微电机是能够自我推进的具有120微米s的速度-1通过氧气气泡经由H的分解2 Ó 2用Mn催化2 ö 3。由于结合了自主运动和天然漆酶的高选择性以及Fe-BTC / NiFe 2 O 4纳米酶的高过氧化物酶样活性,这些微电机对亚甲基蓝降解的催化活性要比被动分子高。磁性NiFe 2 O 4除了作为固定漆酶的Fe-BTC的底物外,还可以对运动方向进行远程磁性控制。
更新日期:2020-09-18
down
wechat
bug