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在双液阶段的接口组装:向可调节孔径的核心外磁性半孔微球

Qin Yue¹, Jialuo Li¹, Wei Luo²

¹Department of Chemistry, State Key Laboratory of Molecular Engineering of Polymers, and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, State Key Laboratory of ASIC & System, Collaborative Innovation Center of Chemistry for Energy Materials, Fudan University , Shanghai 200433, P. R. China.

Journal of the American Chemical Society

|July 18, 2015

概括

为生物催化合成了统一的磁性半孔微球 (Magn-MSM). 这些Magn-MSM能够有效地选择酶的固定和活性,并显示出出色的磁性分离和可回收性.

科学领域:

材料科学
纳米技术
生物技术

背景情况:

核心外磁性半孔微球 (Magn-MSM) 对于生物催化和磁性生物分离等应用至关重要.
在外中开发可调节的大型中介孔的Magn-MSM是一个重大挑战.

研究的目的:

开发一种新的方法来合成具有可控尺寸的均Magn-MSM.
评估这些Magn-MSM在尺寸选择性生物催化和酶固定中的性能.

主要方法:

在n-hexane/水系统中采用剪切辅助接口联合组装方法.
使用Fe3O4@RF微球作为磁芯,表面活性剂和酸寡合物形成中孔.
合成涉及控制表面活性剂小粒内的静电相互作用和n- 六溶解.

主要成果:

成功合成了带有调节性半径 (5.0-9.0 nm) 的均Magn-MSM (600 nm直径).
微球的表面积高 (498-623 m2/g),孔积大 (0.91-0.98 cm3/g),磁化强 (34.5-37.1 emu/g).
通过将素 (4.0 nm) 固定在9.0 nm的中介孔上,获得了高负载能力 (~97 μg/ mg),证明了尺寸选择性酶解和良好的可回收性.

结论:

开发的方法提供了适用于生物催化剂的可调的大型中介孔.
这些Magn-MSM提供有效的酶固定,尺寸选择性生物催化和有效的磁性分离以回收.

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