Synthesis and Characterization of Nanocomposite of Functionalized Graphene Oxide with Multi Core-Shell Fe3O4-ZnO-TiO2 Nanoparticles

Abstract

-This project involves development and characterization of nanocomposite of functionalized graphene oxide with multi coreshell Fe3O4-ZnO-TiO2 nanoparticles (abbreviated as G-MCSN) with enhanced multi-functional properties. The multi core-shell nanoparticles consist of superparamagnetic core with modified shells of photocatalytic materials. After synthesis of Fe3O4 nanoparticles (using co-precipitation and solvothermal processes), it was coated with multi shells of ZnO and TiO2 (via a facile sol-gel rout). Functionalized graphene oxide was synthesized and mixed with multi core-shell nanoparticles to prepare the nanocomposite. The phases and morphology of the core-shell nanoparticles and the nanocomposite were investigated by X-ray diffraction (XRD), field emission scanning electron microscopy (FE/SEM) and transmission electron microscopy (TEM/SAED). The magnetization hysteresis curves of the samples were conducted by a vibrating sample magnetometer (VSM). The results showed that the average size of synthesized magnetite nanoparticles were less than 20 nm. The précised control of the procedure resulted in the formation of core-shell structure after coating with ZnO and TiO2. The median size of core-shell nanoparticles was less than 50 nm. TEM studies revealed the formation of a few layers functionalized graphene oxide (FGO), as well as core-shell nanoparticles. Vibrating sample magnetometer measurement showed that magnetic property of the core-shell nanoparticles was lower than the bare Fe3O4 nanoparticles (from 40.96 emu.g -1 in bare Fe3O4 nanoparticles to 20.13 and 12.98 emu.g -1 in core-shell nanoparticles). But, when nanocomposite was made (FGO with core-shell nanoparticles), magnetic property was increased in comparison with the coreshell nanoparticles from 12.98 emu.g -1 to 28.18 emu.g -1 .

Tailoring of Nanostructured ZnO-Fe3O4/TiO2 Composite Derived from MIL 125(Ti) for Efficient Photocatalytic Removal of Reactive Blue 21 from Aqueous Solutions

“…3b). The result was in close agreement with previous experimental results (Nemati et al 2017). TiO2 particles (Fig.…”

“…101), ( 102), ( 110), ( 103), and (112). These results illustrated that the ZnO-Fe3O4 composite was successfully synthesized (Saffari et al 2015;Nemati et al 2017).…”

Ultrasound-Assisted Synthesis of a N-TiO2/Fe3O4@ZnO Complex and Its Catalytic Application for Desulfurization

“…Such functionalization of the surface of NPs can be achieved by coating them with a protective shell around the magnetic core. It has been reported that can be easily coated on Fe 3 O 4 as a protective layer [17]. ZnO has also been reported to show enhanced activity for desulfurization [18], and it is also a porous nanomaterial as well as a good photocatalytic material.…”