Dopant-free, polymorphic design of TiO2 nanocrystals by flame aerosol synthesis

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal

28 Scopus Citations
View graph of relations

Author(s)

Related Research Unit(s)

Detail(s)

Original languageEnglish
Pages (from-to)2409-2416
Journal / PublicationChemical Engineering Science
Volume66
Issue number11
Publication statusPublished - 1 Jun 2011

Abstract

A dopant-free aerosol synthesis of highly crystalline TiO2 nanoparticles (20-35nm) with tunable polymorphic content is demonstrated by rapid flame spray pyrolysis. By controlling precisely the total ambient oxygen partial pressure of the combustion in a quartz tube enclosure, anatase content as high as 96wt% (4wt% rutile) was obtained at high oxic flame conditions, while rutile content as high as 94wt% (6wt% anatase) was obtained under anoxic flames. The polymorphic variability lies within a narrow range of combustion equivalence ratios, that is, 1.01.0) possibly due to physical hindrance by surface carbonaceous content (typically 2 nanocrystals, preserving hence its pristine state. © 2011 Elsevier Ltd.

Research Area(s)

  • Design, Flame spray pyrolysis, Nanostructure, Particle formation, Powder technology, TiO2

Citation Format(s)

Dopant-free, polymorphic design of TiO2 nanocrystals by flame aerosol synthesis. / Kho, Yung Kent; Teoh, Wey Yang; Mädler, Lutz; Amal, Rose.

In: Chemical Engineering Science, Vol. 66, No. 11, 01.06.2011, p. 2409-2416.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal