Ti(IV)-doped γ-Fe2O3 nanoparticles possessing unique textural and chemical properties: Enhanced suppression of phase transformation and promising catalytic activity

Publication date: March 2018 Source:Journal of Solid State Chemistry, Volume 259 Author(s): Abbas Khaleel, Maliha Parvin, Moahmmed AlTabaji, Ahmed Al-zamly Nanostructured Ti(IV)-doped γ-Fe2O3 was prepared via a sol-gel method, and the effect of doping on the phase stability, textural properties, and catalytic activity was investigated. Well-dispersed 10% Ti in γ-Fe2O3 structure was found to significantly suppress its conversion to α-Fe2O3. While undoped product contained both phases, γ- and α-Fe2O3, at 400°C, its doped counterpart contained γ-Fe2O3 as the sole phase at temperatures as high as 500°C and partial conversion started only at 550°C. Doping also resulted in modified textural properties, including smaller particles, larger surface areas, and higher mesoporosity, as well as enhanced reducibility and catalytic activity. Graphical abstract
Source: Journal of Solid State Chemistry - Category: Chemistry Source Type: research