Jump to main content
Jump to site search

Issue 6, 2012
Previous Article Next Article

Hierarchical rutile TiO2 mesocrystals assembled by nanocrystals-oriented attachment mechanism

Author affiliations

Abstract

Hierarchical rutile TiO2 mesocrystals (RTMs) were synthesized on a large scale by a one-step hydrothermal method under a weak acid assistant. The structure and morphologies of these RTMs are investigated by detailed transmission electron microscopy (TEM). It is demonstrated that the branched structures of RTMs exhibit a sword-like shape at the end with exposed {101} facets, and a twinned {200} plane is found in each branched nanorod. Additionally, another {101} twinned plane is formed at the interface of the “trunk” and “branch” with a 65° angle. Interestingly, it has been found that homogeneous nanocrystals with diameters below 14 nm are epitaxially attached on the surface of the {110} planes with a lower surface energy at an angle of about either 113° or 67°. Correspondingly, a model of crystal planes as building blocks of RTMs is proposed to illustrate the complex structure of the RTMs. The growth mechanism of 3D RTMs is ascribed to the nanocrystals-oriented attachment and the formation of rutile {101} twinned structures.

Graphical abstract: Hierarchical rutile TiO2 mesocrystals assembled by nanocrystals-oriented attachment mechanism

Back to tab navigation
Please wait while Download options loads

Publication details

The article was received on 03 Oct 2011, accepted on 06 Dec 2011 and first published on 26 Jan 2012


Article type: Paper
DOI: 10.1039/C2CE06314J
Citation: CrystEngComm, 2012,14, 2278-2282
  •   Request permissions

    Hierarchical rutile TiO2 mesocrystals assembled by nanocrystals-oriented attachment mechanism

    H. Wang, Y. Liu, Z. Liu, H. Xu, Y. Deng and H. Shen, CrystEngComm, 2012, 14, 2278
    DOI: 10.1039/C2CE06314J

Search articles by author