材料科学
介孔材料
纳米材料
纳米反应器
介孔二氧化硅
化学工程
脂肪酶
生物催化
固定化酶
纳米技术
催化作用
纳米颗粒
磁性纳米粒子
有机化学
化学
酶
离子液体
工程类
作者
Tong Zhang,Biaotong Huang,Ahmed A. Elzatahry,Abdulaziz Alghamdi,Yuwen Qin,Yonghui Deng
标识
DOI:10.1021/acsami.0c03220
摘要
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@void@mSiO2 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.
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