Synthesis of Podlike Magnetic Mesoporous Silica Nanochains for Use as Enzyme Support and Nanostirrer in Biocatalysis,ACS Applied Materials & Interfaces

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Synthesis of Podlike Magnetic Mesoporous Silica Nanochains for Use as Enzyme Support and Nanostirrer in Biocatalysis
ACS Applied Materials & Interfaces ( IF 8.3 ) Pub Date : 2020-04-02 , DOI: 10.1021/acsami.0c03220
Tong Zhang ₁ , Biaotong Huang _{2,

3} , Ahmed A. Elzatahry ₄ , Abdulaziz Alghamdi ₅ , Qin Yue ₂ , Yonghui Deng _{1,

6}

Affiliation

Magnetic mesoporous materials have attracted great interest due to their combined property of magnetic nanomaterials and mesoporous materials as well as their potential applications in catalysis, bioenrichment, drug delivery, nanoreactors, etc. In this study, one-dimensional (1D) podlike magnetic mesoporous silica nanochains with tunable hollow space (Fe₃O₄@nSiO₂@[email protected]₂ nanochain named as podlike 1D magnetic mesoporous silica (PL-MMS) nanochain) are rationally synthesized for the first time through a controlled magnetic-induced interface coassembly approach. The obtained PL-MMS possesses a tunable diameter (300–500 nm), large and perpendicular mesopores (8.2 nm) in the outer shell, a silica-protected magnetic-responsive core, and a high surface area (325 m²/g). Benefiting from the large voids and unique mesopores, these mesoporous nanochains exhibit superior performance in enzyme (lipase with a size of 4.0 nm) immobilization with a high loading capacity of 223 μg/mg, and the immobilized lipase demonstrates enhanced catalytic activity in different pH values and temperatures as well as excellent tolerance of organic solvent.

中文翻译：

Podlike磁性介孔二氧化硅纳米链的合成，用于生物催化中的酶支持和纳米刺激剂

磁性介孔材料因其具有磁性纳米材料和介孔材料的组合特性以及在催化，生物富集，药物递送，纳米反应器等方面的潜在应用而引起了人们的极大兴趣。在本研究中，一维（1D）豆荚状磁性介孔二氧化硅具有可调中空空间的纳米链（Fe ₃ O ₄ @nSiO ₂ @ [受电子邮件保护] ₂纳米链被称为Podlike 1D磁性介孔二氧化硅（PL-MMS）纳米链）是通过受控的磁诱导界面共组装方法首次合理合成的。获得的PL-MMS具有可调的直径（300-500 nm），外壳中大而垂直的中孔（8.2 nm），二氧化硅保护的磁响应芯和高表面积（325 m ² / g）。得益于巨大的空隙和独特的中孔，这些中孔纳米链在固定化酶（尺寸为4.0 nm的脂肪酶）中表现出优异的性能，并具有223μg/ mg的高负载量，并且固定化的脂肪酶在不同的pH值下显示出增强的催化活性。和温度以及对有机溶剂的出色耐受性。

更新日期：2020-04-03

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