ACADSTAFF UGM
| Title | : | A synthesis of polyethylene glycol (PEG)-coated magnetite Fe3O4 nanoparticles and their characteristics for enhancement of biosensor |
| Author | : |
Ganesha Antarnusa (1) Dr.Eng. Edi Suharyadi, S.Si., M.Eng. (2) |
| Date | : | 0 2020 |
| Keyword | : | polyethylene glycol (PEG), co-precipitation method, biosensor applications,magnetite Fe3O4 ,nanoparticles polyethylene glycol (PEG), co-precipitation method, biosensor applications,magnetite Fe3O4 ,nanoparticles |
| Abstract | : | The magnetite Fe3O4nanoparticles were synthesized by using chemical co-precipitation method and these nanoparticles were successfully coated by polyethylene glycol(PEG)with variation concentrations of PEG. The magnetite Fe3O4nanoparticles used as a bimolecular label(nano-tags), exhibiting a soft magnetic behavior with magnetization (Ms) of 77.16 emu g?1 and coercivity (Hc) of 50 Oe respectively. The polyethylene glycol(PEG)was used as a biocompatible polymer. The x-ray diffraction(XRD) patterns of the Fe3O4 showed that Fe3O4was well crystallized. It also confirmed the existence of invers spinel. The diffraction peak of 35.4°was used to calculate the crystallite size. The estimation of Fe3O4 average crystallite size is 12 nm, while the PEG-coated Fe3O4nanoparticles is 8.6 nm. The transmission electron microscopy (TEM)images of Fe3O4 showed that the morphology of magnetite Fe3O4nanoparticle is spherical in shape with uniform grain size and good dispersibility despite the agglomeration itfound in some place. The addition of PEG can decrease the agglomeration and reduce the particle size. The existence of PEG layer on Fe3O4was confirmed by Fourier transform infrared (FTIR)spectroscopy. The result of Vibrating Sample Magnetometer(VSM)showed that saturation magnetization (Ms) of Fe3O4nanoparticles decreasedfrom 77.16 to 37.15 emu g?1 with the increase of PEG weightfrom 0% to 50%. Such Fe3O4nanoparticles with favorable size and tunable magnetic properties are promising biosensor applications. |
| Group of Knowledge | : | Fisika |
| Original Language | : | English |
| Level | : | Internasional |
| Status | : |
Published
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