Evolution of the Polymorph Selectivity of Titania Formation under Acidic and Low-Temperature Conditions

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DOI

  • Gunnar Símonarson, Chalmers University of Technology
  • ,
  • Sanna Sommer
  • Antiope Lotsari, Chalmers University of Technology
  • ,
  • Björn Elgh, Chalmers University of Technology
  • ,
  • Bo B. Iversen
  • Anders E.C. Palmqvist, Chalmers University of Technology

Evolution of the polymorph selectivity of titanium dioxide was studied under acidic and low-temperature synthesis conditions. Short synthesis times resulted in high relative amounts of the rutile phase, and long synthesis times resulted in high relative amounts of the brookite and anatase phases. The effect of titania precursor concentration was investigated and found to have a large impact on the polymorph selectivity. As the reaction proceeds with time, changes in the chemical environment, caused in particular by the gradually decreasing titania precursor concentration, are therefore likely the cause of the change in polymorph selectivity observed.

OriginalsprogEngelsk
TidsskriftACS Omega
Vol/bind4
Nummer3
Sider (fra-til)5750-5757
Antal sider8
ISSN2470-1343
DOI
StatusUdgivet - 2019

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