Facile method to synthesize magnetic iron oxides/TiO2 hybrid nanoparticles and their photodegradation application of methylene blue

Abstract

Many methods have been reported to improving the photocatalytic efficiency of organic pollutant and their reliable applications. In this work, we propose a facile pathway to prepare three different types of magnetic iron oxides/TiO2 hybrid nanoparticles (NPs) by seed-mediated method. The hybrid NPs are composed of spindle, hollow, and ultrafine iron oxide NPs as seeds and 3-aminopropyltriethyloxysilane as linker between the magnetic cores and TiO2 layers, respectively. The composite structure and the presence of the iron oxide and titania phase have been confirmed by transmission electron microscopy, X-ray diffraction, and X-ray photoelectron spectra. The hybrid NPs show good magnetic response, which can get together under an external applied magnetic field and hence they should become promising magnetic recovery catalysts (MRCs). Photocatalytic ability examination of the magnetic hybrid NPs was carried out in methylene blue (MB) solutions illuminated under Hg light in a photochemical reactor. About 50% to 60% of MB was decomposed in 90 min in the presence of magnetic hybrid NPs. The synthesized magnetic hybrid NPs display high photocatalytic efficiency and will find recoverable potential applications in cleaning polluted water with the help of magnetic separation.

Magnetically recyclable nanocatalysts (MRNCs): a versatile integration of high catalytic activity and facile recovery

“…2.2 Synthetic strategies assisted by soft coupling layers [75][76][77][78][79][80][81][82][83][84][85][86][87][88][89] As compared with hard coupling layer materials mentioned above, soft organic molecules with multiple functional groups such as -SH, -COOH, -OH, -NH 2 and pyrrole ring [75][76][77][78][79][80][81][82][83][84][85][86][87][88][89] can be more easily attached to the surface of magnetic components as well as catalytic active species via covalent bond, coordination bond, electrostatic interaction, and so forth. It is our position that the rational selection and combination of different types of soft organic molecules can lead to a high efficient integration of magnetic components and nanocatalysts.…”

Photo-catalytic selectivity of anthranilic acid over iron oxide incorporated titania nanoparticles: Influence of the Fe2+/Fe3+ ratio of iron oxide

“…Fe 1−x Ti x O 2 nanoparticles. The preparation of iron oxide incorporated TiO 2 nanoparticles is few [9][10][11]. In this study, a novel nano-composite photocatalyst, iron oxide incorporated titania (FIT) nanoparticles is developed via a non-aqueous route with a tunable atomic ratio of Fe/Ti from 3.53% to 20.79% via a non-aqueous route as a solution for the dilemma.…”

One-pot synthesis of multi-functional magnetite–polysilsesquioxane hybrid nanoparticles for the selective Fe3+ and some heavy metal ions adsorption

“…[29][30][31] Although, the concept of synthesis of magnetic nanoparticles and surface functionalisation of the magnetic nanoparticles are well-known in the literatures, the applications of the magnetic-based materials are emerging continuously in various applications with the modi-cation of synthesis procedure. [32][33][34] Moreover, most of the surface functionalised magnetic materials were synthesised by two step processes such as synthesis of magnetic nanoparticles followed by the surface functionalisation of the magnetic nanoparticles.…”