Synthesis of functionalized magnetite titanium dioxide nanocomposite for removal of Acid Fuchsine dye.

Synthesis of functionalized magnetite titanium dioxide nanocomposite for removal of Acid Fuchsine dye. Comb Chem High Throughput Screen. 2018 Oct 19;: Authors: Rahnama S, Shariati S, Divsar F Abstract In this research, a novel magnetite titanium dioxide nanomesopore functionalized by amine groups (Fe3O4@SiO2@TiO2-NH2) was synthesized and its potential for efficient removal of Acid fuchsine (AF) as an anionic dye from aqueous solutions was investigated. For this aim, the core-shell structure of Fe3O4@SiO2@TiO2 was prepared using Fe3O4 as magnetic core, tetra ethyl orthosilicate as silica and tetra butyl titanate as titanium sources for shell. The synthesized nanomesopores (particle size lower than 44 nm) were characterized by FT-IR, XRD, DRS, SEM and TGA instruments. The various experimental parameters affecting dye removal efficiency were investigated and optimized using Taguchi fractional factorial design. The synthesized adsorbent showed the highest removal efficiency of AF (99 %) at pH= 3.5, without salt addition and during stirring less than 10 minutes. The kinetic studies showed the fast dye sorption on the surface of proposed nanomesopores with pseudo second order kinetic model. Also, the fitting of AF sorption data to Freundlich, Langmuir and Tempkin isotherms suggested that Freundlich model gave a better fitting than other models. Good chemical stability, excellent magnetic properties, very fast adsorption kinetics and high r...
Source: Combinatorial Chemistry and High Throughput Screening - Category: Chemistry Authors: Tags: Comb Chem High Throughput Screen Source Type: research