کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
50883 46820 2011 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Studies of Fe3O4-chitosan nanoparticles prepared by co-precipitation under the magnetic field for lipase immobilization
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی کاتالیزور
پیش نمایش صفحه اول مقاله
Studies of Fe3O4-chitosan nanoparticles prepared by co-precipitation under the magnetic field for lipase immobilization
چکیده انگلیسی

A simple method was introduced to prepare magnetic Fe3O4-chitosan nanoparticles by co-precipitation with 0.45 T static magnetic field via glutaraldehyde cross-linking reaction, and the nanoparticles were used to immobilize lipase. The influence of magnetic field on the properties of magnetic nanoparticles was studied by SEM, XRD and VSM. The results showed that no obvious difference of the nanoparticles structure was found, while the morphology varied from random sphere-like to rod-like and magnetic character was significantly changed. Furthermore, the lipase immobilized with nanoparticles prepared under the magnetic field enhanced the activity, operational and storage stability compared with the control sample.

Graphical AbstractSEM images of Fe3O4-CS nanoparticles prepared without (a) and with (b) MF.Figure optionsDownload as PowerPoint slideResearch Highlights
► We prepared Fe3O4-chitosan nanoparticles by co-precipitation method under the MF.
► We studied the influence of the MF on the properties of magnetic nanoparticles.
► Not like the crystal structure, the morphology and magnetic character were changed.
► The lipase was immobilized with nanoparticles prepared under the MF.
► Activity and stability of the immobilized lipase were improved.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Catalysis Communications - Volume 12, Issue 8, 31 March 2011, Pages 717–720
نویسندگان
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