Preparation of High Performance Conductive Polyaniline Magnetite (PANI/Fe3O4) Nanocomposites by Sol-Gel Method

Abstract

The conductivities of polyaniline magnetite (PANI/Fe3O4) nanocomposites prepared by sol-gel method were measured by standard van der Pauw DC 4-point probe method. PANI/Fe3O4 conductivity was measured as a function of wt % (5, 10, 15, 20 and 25 wt %) of Fe3O4 nanoparticles. It was observed that the conductivity of polyaniline containing certain percentage of Fe3O4 nanoparticles is slightly lower than the bulk PANI nanotubes and drastically decreases with increase of wt % Fe3O4 nanoparticles. The high conductivities of PANI/ Fe3O4 nanocomposites was observed due to high concentration of dopant (oxidants) used in the polymerization process and the optimization of these composites allows this being use as a parameter for the production of nanofibers. Fourier transform infrared spectra, field emission scanning electron microscope, X-ray diffraction and ultraviolet-visible absorption spectra are used to characterize the phase structure, morphologies and functional group of the PANI/Fe3O4 composites samples. Fourier transform infrared analysis indicates the presence of PANI containing Fe3O4 nanoparticles and the field emission scanning electron microscope (FESEM) results has proven that the formation of nanofibers in the PANI/Fe3O4 nanocomposites. The crystalline phase of PANI/Fe3O4 nanocomposites studied by X-ray diffraction indicated that the Fe3O4 nanoparticles was present in the PANI matrices.

Solvothermal‐assisted green synthesis of hybrid Chi‐Fe3O4nanocomposites: a potential antibacterial and antibiofilm material

“…3 a and b . The images attained using FE‐SEM shows the predominantly spherical‐shaped particles with high aggregation, this may be due to the strong inter‐particle's Van der Waals force and magnetic attraction among the Fe 3 O 4 NPs [54]. The chitosan was strongly bound on the surface of the hybrid Chi‐Fe 3 O 4 nanocomposite.…”

Potential of nanosilicon dioxide extraction from silicon-rich agriculture wastes as a plant growth promoter

“…It takes five hours of milling process of local agriculture waste to reduce the material size to nanoscale during synthesis, and powder form was agglomerated [109]. Various milling parameters on nanosilicon found that micron-sized silicon was reduced to nanosilicon with 78 nm at 20 h and good rheological dispersion behaviour in fluid [110]. Agriculture waste was synthesised with additional HCl and reasonable milling time at a speed of 22 rpm for 15 min as an alternative for cement concentre [111].…”

Synthesis and Characterization of Novel Fe3O4/PVA/Eggshell Hybrid Nanocomposite for Photodegradation and Antibacterial Activity

“…eggshell component, which present on the outer surface of the prepared hybrid nanocomposite. The presence of O and Mg signals are due to the protein compounds that are unbound and adhered with the nanostructure, which were removed by centrifugation followed by repeated washing [25][26][27]. The weak signals of C and Ca may be from the eggshell component.…”