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Synthesis of one-dimensional Fe3O4@C composites from catalytic pyrolysis of waste polypropylene
Qinghong Kong1, Junhao Zhang, Hong Liu
1Jiangsu University Branch Center of State Key Lab of Urban Water Resource and Environment, Jiangsu University, Zhenjiang 212013, China.
Abstract:
A simple catalytic pyrolysis route was developed to prepare one-dimensional Fe3O4@C composites using waste polypropylene as carbon resource, in which the Fe3O4 nanoparticles were self-assembled to necklace-shaped structures. The products were characterized by means of X-ray power diffraction (XRD), Raman spectra, field-emission scanning electron microscopy (FESEM), and transmission electron microscopy (TEM). The results indicate that the diameter of chains is about 550 nm, the size of Fe3O4 particles is ranging from 200 to 500 nm, and the thickness of carbon shells is about 150 nm. The magnetic measurement at room temperature indicates that the value of saturation magnetization (22.0 emu/g) and coercivity (171.7 Oe) is different from that of bare Fe3O4 nanoparticles and bulk Fe3O4 due to the different carbon content, dipolar interactions, size and morphology of the products.
