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Issue 11, 2010
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Facile synthesis of anatase TiO2 mesocrystal sheets with dominant {001} facets based on topochemical conversion

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Abstract

Uniform anatase TiO2 mesocrystal sheets with dominant {001} facets were synthesized via a self-assembly and self-etching surfactant-free solvothermal process. The formation of well-faceted square sheets can be ascribed to the highly oriented assemblies of building blocks, while the etching agent HF also plays an important role in the tailored synthesis. During the topochemical conversion from NH4TiOF3 to TiO2, a shrinkage void was generated, and the reason proposed is based on the crystal structural differences. Calcination leads to a more observable porous structure but the original shape is well retained. Smaller sheets can be simply obtained by substituting ethanol with 2-propanol which behaves as a synergistic capping agent.

Graphical abstract: Facile synthesis of anatase TiO2 mesocrystal sheets with dominant {001} facets based on topochemical conversion

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Publication details

The article was received on 08 Apr 2010, accepted on 04 Jun 2010 and first published on 06 Jul 2010


Article type: Communication
DOI: 10.1039/C0CE00070A
Citation: CrystEngComm, 2010,12, 3425-3429
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    Facile synthesis of anatase TiO2 mesocrystal sheets with dominant {001} facets based on topochemical conversion

    J. Feng, M. Yin, Z. Wang, S. Yan, L. Wan, Z. Li and Z. Zou, CrystEngComm, 2010, 12, 3425
    DOI: 10.1039/C0CE00070A

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