New insights into polymer mediated formation of anatase mesocrystals

Abstract

The reaction between (NH4)2TiF6 and H3BO3 in the presence of varying quantities of PEG-6000 was used to form NH4TiOF3 mesocrystals (MCs). The amount of PEG-6000, employed as a template, is crucial to the formation of defect free, non-agglomerated NH4TiOF3 MCs; high concentrations lead to MC agglomeration, lower ones result in centralized defects. This polymer-mediated formation process may be understood using an analogy with known polymerization reactions. The oxofluorotitanate MCs readily undergo a thermal topotactic transformation to give anatase MCs with photocatalytic activity. The TiO2 MCs are porous, with highly orientated lamellar crystallites that form part of the larger mesocrystal structure.

Publication DOI: https://doi.org/10.1039/C6CE01985D
Divisions: College of Engineering & Physical Sciences
College of Engineering & Physical Sciences > School of Infrastructure and Sustainable Engineering > Chemical Engineering & Applied Chemistry
College of Engineering & Physical Sciences > Aston Institute of Materials Research (AIMR)
Uncontrolled Keywords: Chemistry(all),Materials Science(all),Condensed Matter Physics
Publication ISSN: 1466-8033
Full Text Link:
Related URLs: http://www.scop ... tnerID=8YFLogxK (Scopus URL)
PURE Output Type: Article
Published Date: 2017-05-23
Accepted Date: 2017-05-23
Submitted Date: 2016-09-13
Authors: Olga, Boytsova V.
Sadovnikov, Alexey A.
Yorov, Khursand E.
Beltiukov, Artemii N.
Baranchikov, Alexander E.
Ivanov, Vladimir K.
Zhong, Xiangli
Lewis, David J.
O'Brien, Paul
Sutherland, Andrew J. (ORCID Profile 0000-0003-3651-1809)

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