期刊
ACS APPLIED MATERIALS & INTERFACES
卷 12, 期 15, 页码 17913-17920出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsami.0c03220
关键词
interface assembly; core-shell; magnetic nanochain; mesoporous materials; enzyme immobilization
资金
- NSF of China [51422202, 21701153, 21673048, 21875044]
- Key Basic Research Program of Science and Technology Commission of Shanghai Municipality [17JC1400100]
- National Key R&D Program of China [2018YFA0209401]
- Program of Shanghai Academic Research Leader [19XD1420300]
- State Key Laboratory of Transducer Technology of China [SKT1904]
- National Youth Topnotch Talent Support Program of China
- King Saud Unversity, Riyadh, Saudi Arabia [RSP-2019/155]
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@nSiO(2)@void@mSiO(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 m(2)/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 mu g/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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