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Title: Titania polymorphs by soft chemistry : is there a common structural pattern?

Abstract

The structural aspects of a soft chemical route employed to obtain nitrogen-doped brookite, rutile, or anatase fine crystallite powders are revealed by total X-ray diffraction and atomic pair distribution function analysis. It is found that the route first passes through a heavily disordered phase consisting of nanosize layers of TiO6 octahedra, similar to those occurring in the lepidocrocite-type structure. That phase is then transformed into a particular titania polymorph by rearranging the layers in a controlled way. The lepidocrocite-type structure thus again proves to be a very useful template in the soft chemistry of titania.

Authors:
; ; ; ; ;
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC); National Science Foundation (NSF); CMU
OSTI Identifier:
919999
Report Number(s):
ANL/XSD/JA-60503
Journal ID: ISSN 0897-4756; CMATEX; TRN: US200822%%500
DOE Contract Number:
DE-AC02-06CH11357
Resource Type:
Journal Article
Resource Relation:
Journal Name: Chem. Mater.; Journal Volume: 19; Journal Issue: Apr. 7, 2007
Country of Publication:
United States
Language:
ENGLISH
Subject:
36 MATERIALS SCIENCE; TITANIUM OXIDES; CRYSTAL STRUCTURE; PHASE STUDIES; PHASE TRANSFORMATIONS

Citation Formats

Gateshki, M., Yin, S., Ren, Y., Petkov, V., Central Michigan Univ., and Tohoku Univ.. Titania polymorphs by soft chemistry : is there a common structural pattern?. United States: N. p., 2007. Web. doi:10.1021/cm0630587.
Gateshki, M., Yin, S., Ren, Y., Petkov, V., Central Michigan Univ., & Tohoku Univ.. Titania polymorphs by soft chemistry : is there a common structural pattern?. United States. doi:10.1021/cm0630587.
Gateshki, M., Yin, S., Ren, Y., Petkov, V., Central Michigan Univ., and Tohoku Univ.. Sat . "Titania polymorphs by soft chemistry : is there a common structural pattern?". United States. doi:10.1021/cm0630587.
@article{osti_919999,
title = {Titania polymorphs by soft chemistry : is there a common structural pattern?},
author = {Gateshki, M. and Yin, S. and Ren, Y. and Petkov, V. and Central Michigan Univ. and Tohoku Univ.},
abstractNote = {The structural aspects of a soft chemical route employed to obtain nitrogen-doped brookite, rutile, or anatase fine crystallite powders are revealed by total X-ray diffraction and atomic pair distribution function analysis. It is found that the route first passes through a heavily disordered phase consisting of nanosize layers of TiO6 octahedra, similar to those occurring in the lepidocrocite-type structure. That phase is then transformed into a particular titania polymorph by rearranging the layers in a controlled way. The lepidocrocite-type structure thus again proves to be a very useful template in the soft chemistry of titania.},
doi = {10.1021/cm0630587},
journal = {Chem. Mater.},
number = Apr. 7, 2007,
volume = 19,
place = {United States},
year = {Sat Apr 07 00:00:00 EDT 2007},
month = {Sat Apr 07 00:00:00 EDT 2007}
}
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