Synthesis of magnetic nanoflower immobilized lipase and its continuous catalytic application

2019 ◽  
Vol 43 (28) ◽  
pp. 11082-11090 ◽  
Author(s):  
Weifan Ren ◽  
Yao Li ◽  
Jihui Wang ◽  
Lin Li ◽  
Longquan Xu ◽  
...  
Keyword(s):  
Magnetic Field ◽  
External Magnetic Field ◽  
Enzymatic Activity ◽  
Immobilized Lipase ◽  
Reaction System ◽  
Catalytic Application ◽  
Free Lipase

We have synthesized a kind of magnetic lipase–Cu3(PO4)2 nanoflowers (lipase@MNFs), which can be separated quickly from the reaction system under the external magnetic field. Compared with free lipase, the lipase@MNFs exhibited higher enzymatic activity (∼110%) and stability.

scholarly journals Self-assembly mechanism of Ni nanowires prepared with an external magnetic field

2015 ◽  
Vol 6 ◽  
pp. 2123-2128 ◽  
Author(s):  
Xiaoyu Li ◽  
Hu Wang ◽  
Kenan Xie ◽  
Qin Long ◽  
Xuefei Lai ◽  
...  
Keyword(s):  
Magnetic Field ◽  
External Magnetic Field ◽  
Self Assembly ◽  
Chemical Reduction ◽  
Reaction System ◽  
The Self ◽  
Nickel Nanowires ◽  
Assembly Mechanism ◽  
Nickel Particles ◽  
First Time

Nickel nanowires with a mean diameter of about 95 nm and lengths of up to 26 μm were prepared by a chemical reduction method in aqueous solution under an external magnetic field. The self-assembly mechanism was investigated in detail. The results indicate that the self-assembly process of Ni nanowires consists of three stages: nucleation and growth, ordered alignment and self-assembly, and deposition on the surface and gaps between the nickel particles. The self-assembly phenomenon occurs only when nickel particles grow to a size of about 60 nm in the reaction system. This critical size, which is proposed for the first time, is very important to comprehend the self-assembly mechanism of Ni nanowires prepared with an external magnetic field.

A novel magnetic NiFe2O4@graphene–Pd multifunctional nanocomposite for practical catalytic application

RSC Advances ◽  
2015 ◽  
Vol 5 (97) ◽  
pp. 79548-79555 ◽  
Author(s):  
Xiaohua Zhao ◽  
Xiang Liu
Keyword(s):  
Magnetic Field ◽  
Catalytic Activity ◽  
External Magnetic Field ◽  
Suzuki Reaction ◽  
Simple Application ◽  
Hybrid Catalyst ◽  
Catalytic Application

A novel NiFe2O4@GN–Pd was used as outstanding catalyst for the Suzuki reaction in EtOH/H2O. The hybrid catalyst could be recycled and reused with the simple application of an external magnetic field, while keeping similar catalytic activity for six successive reactions.

RECOIL IMPLANTATION MÖSSBAUER EXPERIMENT ON 57Fe IN Ge IN THE PRESENCE OF AN EXTERNAL MAGNETIC FIELD

1980 ◽  
Vol 41 (C1) ◽  
pp. C1-445-C1-445
Author(s):  
G. Langouche ◽  
N. S. Dixon ◽  
L. Gettner ◽  
S. S. Hanna
Keyword(s):  
Magnetic Field ◽  
External Magnetic Field ◽  
Recoil Implantation
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