Ionic Liquid-Assisted Synthesis of Anatase Nanostructured TiO₂ Aerogel Doped with Fe³⁺ by a Low Temperature Sol-Gel Process and its Photocatalytic Performance

Abstract:

Anatase crystalline TiO₂ aeroge and TiO₂ aerogel doped with Fe³⁺ were prepared at low temperature (60°C) using ionic liquid (IL) assisted sol-gel method. In this system, ionic liquid was not only an effective solvent but also an important template, which enhanced the polycondensation and crystallization rate, facilitated the formation of anatase crystal. Due to the effect of template, anatase crystalline TiO₂ aerogel can be synthesized at the aging temperature of 60°C and drying under ambient pressure. The as-synthesized samples were characterized by X-ray power diffraction (XRD), scanning electron microscopes (SEM). The photocatalytic performance of pure TiO₂ aerogel and TiO₂ aerogel doped with Fe³⁺ aerogel was evalutaed by decolorization of reactive brilliant blue under visible light irridation. The results indicated that TiO₂ aerogel doped with Fe³⁺ exhibited higher photocatalytic activity than pure TiO₂ aerogel and Degussa P25.

• Periodical: Advanced Materials Research (Volumes 785-786)
• Pages: 365-369
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.785-786.365
• Online since: September 2013
• Authors: Ning Ning Wang, Chun Ling Yu, Hong Yi Dai, Ying Huan Fu, Guo Lin Shao, Xiao Li Dong
• Keywords: Ambient Drying, Fe³⁺ doping, Ionic Liquid (IL), Low-Temperature, TiO₂ Aerogel

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