Synthesize and characterize of Fe₃O₄/zeolite 4A magnetic nanocomposite

Abstract

In order to solve the problem that separating zeolite 4A from solutions, we have synthesized Fe₃O₄/zeolite 4A magnetic nanocomposite by hydrothermal method. It is characterized by Transmission electron microscopy (TEM), X-ray diffraction (XRD), Fourier transform infrared (FTIR), Vibrating Sample Magnetometer (VSM), scanning electron microscope (SEM) and Brunner-Emmet-teller (BET). The XRD result shows that Fe₃O₄/zeolite 4A magnetic nanocomposite has a good crystal structure. It also shows that Fe₃O₄/zeolite 4A magnetic nanocomposite contains two phases of zeolite 4A and Fe₃O₄ MNP. The optimal sample (Z-2) was judged by the calculation of crystallinity. The successful combination of zeolite 4A and Fe₃O₄ MNP was visually observed through SEM technology. The functional groups of Fe₃O₄/zeolite 4A magnetic nanocomposite were characterized by FTIR technology. The TEM result shows that some Fe₃O₄ MNPs enter zeolite 4A, which further clarifies the microstructure of Fe₃O₄/zeolite 4A magnetic nanocomposite. N₂ adsorption-desorption technique confirms that Fe₃O₄/zeolite 4A magnetic nanocomposite S_BET is 55.3374 m²/g and D_ave is 9.7128 nm. VSM result shows that Fe₃O₄/zeolite 4A magnetic nanocomposite magnetization is 18.4534 emu/g. Simulation experiment shows that Fe₃O₄/zeolite 4A magnetic nanocomposite exhibit a fast response to an external magnetic field.

Graphical Abstract

Keywords:

• Fe₃O₄/zeolite 4A
• magnetic nanocomposite
• hydrothermal method
• microstructure

Additional information

Funding

This research was funded by Guizhou Science and Technology Plan Project ((2017) No. 7247).