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Synthesis of octahedral TiO2 single crystals with {101} facets from solid precursor with N2H4 as capping agent

  • Hui Jin
  • Jian Pan
  • Lianzhou WangEmail author
Research Paper

Abstract

In this work, N2H4 was used as surface-capping agent for the first time to synthesize octahedral anatase TiO2 single crystals with dominant {101} facets from H0.68Ti1.83O4 solid precursor. The resultant particle size of {101} facet enriched TiO2 was around 100 nm. The function of N2H4 in the hydrothermal process is not only to provide a mild basic environment, but also to promote the growth of {101} surface because of its strong reducibility. The amount of N2H4 and precursor added in the solution is also investigated, and the result reveals that nearly 100 % {101} facet can be obtained only if N2H4 were added to a certain amount, while the concentration of precursor has no influence on the final result which means that this reaction can be largely scaled up. In oxygen evolution from photocatalytic water splitting, the {101} facets exhibited different performance using AgNO3 or (NH4)2Ce(NO3)6 as sacrificial agent.

Keywords

TiO2·{101} facet Octahedral anatase Photocatalytic water splitting Nanocrystals 

Supplementary material

11051_2014_2352_MOESM1_ESM.doc (7.1 mb)
Supplementary material 1 (DOC 7288 kb)

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Copyright information

© Springer Science+Business Media Dordrecht 2014

Authors and Affiliations

  1. 1.School of Chemical EngineeringUniversity of QueenslandSt LuciaAustralia
  2. 2.ARC Centre of Excellence for Functional Nanomaterials, School of Chemical Engineering and AIBNUniversity of QueenslandSt LuciaAustralia

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