Synthesis and Characterization of Fe3O4 Nanoparticles using Polyvinyl Alcohol (PVA) as Capping Agent and Glutaraldehyde (GA) as Crosslinker

International Conference on Chemistry and Material Science 2017

化学;材料科学

Hutami Rahayu, Lale Budi^1 ; Wulandari, Ika Oktavia^1 ; Santjojo, Djoko Herry^2 ; Sabarudin, Akhmad^1

Department of Chemistry, Faculty of Science, Brawijaya University, Jl Veteran, Malang

65145, Indonesia^1

Department of Physics, Faculty of Science, Brawijaya University, Jl Veteran, Malang

65145, Indonesia^2

关键词: Cubic crystal structures;    Elemental compositions;    Fe3O4 nanoparticles;    Glutaraldehydes;    Magnetic character;    Magnetite phase;    Poly (vinyl alcohol) (PVA);    Synthesis and characterizations;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/299/1/012062/pdf
DOI  :  10.1088/1757-899X/299/1/012062

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

The use of polyvinyl alcohol (PVA) as a capping agent and glutaraldehyde (GA) as a crosslinker for a synthesis of magnetite (Fe3O4) nanoparticles is able to reduce agglomeration of produced Fe3O4. Additionally, oxidation of Fe3O4by air could be avoided. The synthesis is carried out in two steps: first step, magnetite (Fe3O4) nanoparticles were prepared by dissolving the FeCl3.6H2O and FeCl2.4H2O in alkaline media (NH3.H2O). The second step, magnetite nanoparticles were coated with polyvinyl alcohol (PVA) and glutaraldehyde (GA) to obtain Fe3O4-PVA-GA. The latter material was then characterized by FTIR to determine the typical functional groups of magnetite coated with PVA-GA. X-ray Diffraction analysis was used to determine structure and size of crystal as well as the percentage of magnetite produced. It was found that the produced nanoparticles have crystal sizes around 4-9 nm with the cubic crystal structure. The percentage of magnetite phase increases when the amount of glutaraldehyde increased. SEM-EDX was employed to assess the surface morphology and elemental composition of the resulted nanoparticles. The magnetic character of the magnetite and Fe3O4-PVA-GA were studied using Electron Spin Resonance.