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Synthesis of TiO2 hollow spheres using binary ionic liquids as an electrocatalyst

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Abstract

Titanium dioxide (TiO2 titania) hollow sphere was simply synthesized using various ionic liquids (ILs). The shape and size of TiO2 particles were significantly different with the composition of ILs. This is mainly attributed to the interaction between organic solvent and IL at the interface leading to the formation of sphere. Among the binary ILs, [Bmim][BF4] + [Omim][PF6], [Bmim][BF4] + [Omim][PF6], and [Bmim][PF6] + [Hmim][PF6] were useful to prepare TiO2 nanostructures with high surface area and anatase phase. Especially, [Bmim][BF4] + [Omim][PF6] was the most effective IL to synthesize an anatase TiO2 hollow sphere.

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Acknowledgments

This work was financially supported by the National Research Foundation of Korea funded by the Ministry of Education, Science and Technology (no. 2010-0023479).

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Authors and Affiliations

  1. Department of Chemical Engineering, Seoul National University of Science and Technology, Seoul, Korea

    Kiwon Hong & Kye Sang Yoo

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  1. Kiwon Hong
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  2. Kye Sang Yoo
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Correspondence to Kye Sang Yoo.

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Hong, K., Yoo, K.S. Synthesis of TiO2 hollow spheres using binary ionic liquids as an electrocatalyst. Res Chem Intermed 37, 1325–1331 (2011). https://doi.org/10.1007/s11164-011-0400-1

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