Hydrothermal synthesis of polymorphic titania and their structural evolution from potassium titanate whisker

Ming He; Xiao Li Gu; Zhen Yang Luo; Xiao Hua Lu; Xin Feng

doi:10.3724/SP.J.1077.2008.00662

Hydrothermal synthesis of polymorphic titania and their structural evolution from potassium titanate whisker

Ming He, Xiao Li Gu, Zhen Yang Luo, Xiao Hua Lu, Xin Feng

College of Chemical Engineering

Research output: Contribution to journal › Article › peer-review

2 Scopus citations

Abstract

The hydrothermal synthesis of polymorphic titania crystals and their structural evolution from potassium titanates, K₂Ti₆O₁₃, K₂Ti₄O₉ and K₂Ti₈O₁₇ whiskers, were studied systematically. Dispersed, regular twinning rutile TiO₂ was firstly generated by hydrothermally treating K₂Ti₆O₁₃ whisker in an acid medium. The crystal phase and morphologies varied with different reaction temperatures and time in diverse mediums were investigated using XRD, SEM and TEM. The results indicate that the weak-binding crystallographic planes are the key factors of the crystal transformation in the hydrothermal system. The transformation from K₂Ti₆O₁₃ to the twinning rutile is achieved via rearranging structural units on the {100} or {201} plane.

Original language	English
Pages (from-to)	662-668
Number of pages	7
Journal	Wuji Cailiao Xuebao/Journal of Inorganic Materials
Volume	23
Issue number	4
DOIs	https://doi.org/10.3724/SP.J.1077.2008.00662
State	Published - Jul 2008

Keywords

Hydrothermal
Potassium titanates whisker
Structural evolution
Titania

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10.3724/SP.J.1077.2008.00662

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title = "Hydrothermal synthesis of polymorphic titania and their structural evolution from potassium titanate whisker",

abstract = "The hydrothermal synthesis of polymorphic titania crystals and their structural evolution from potassium titanates, K2Ti6O13, K2Ti4O9 and K2Ti8O17 whiskers, were studied systematically. Dispersed, regular twinning rutile TiO2 was firstly generated by hydrothermally treating K2Ti6O13 whisker in an acid medium. The crystal phase and morphologies varied with different reaction temperatures and time in diverse mediums were investigated using XRD, SEM and TEM. The results indicate that the weak-binding crystallographic planes are the key factors of the crystal transformation in the hydrothermal system. The transformation from K2Ti6O13 to the twinning rutile is achieved via rearranging structural units on the {100} or {201} plane.",

keywords = "Hydrothermal, Potassium titanates whisker, Structural evolution, Titania",

author = "Ming He and Gu, {Xiao Li} and Luo, {Zhen Yang} and Lu, {Xiao Hua} and Xin Feng",

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T1 - Hydrothermal synthesis of polymorphic titania and their structural evolution from potassium titanate whisker

AU - He, Ming

AU - Gu, Xiao Li

AU - Luo, Zhen Yang

AU - Lu, Xiao Hua

AU - Feng, Xin

PY - 2008/7

Y1 - 2008/7

N2 - The hydrothermal synthesis of polymorphic titania crystals and their structural evolution from potassium titanates, K2Ti6O13, K2Ti4O9 and K2Ti8O17 whiskers, were studied systematically. Dispersed, regular twinning rutile TiO2 was firstly generated by hydrothermally treating K2Ti6O13 whisker in an acid medium. The crystal phase and morphologies varied with different reaction temperatures and time in diverse mediums were investigated using XRD, SEM and TEM. The results indicate that the weak-binding crystallographic planes are the key factors of the crystal transformation in the hydrothermal system. The transformation from K2Ti6O13 to the twinning rutile is achieved via rearranging structural units on the {100} or {201} plane.

AB - The hydrothermal synthesis of polymorphic titania crystals and their structural evolution from potassium titanates, K2Ti6O13, K2Ti4O9 and K2Ti8O17 whiskers, were studied systematically. Dispersed, regular twinning rutile TiO2 was firstly generated by hydrothermally treating K2Ti6O13 whisker in an acid medium. The crystal phase and morphologies varied with different reaction temperatures and time in diverse mediums were investigated using XRD, SEM and TEM. The results indicate that the weak-binding crystallographic planes are the key factors of the crystal transformation in the hydrothermal system. The transformation from K2Ti6O13 to the twinning rutile is achieved via rearranging structural units on the {100} or {201} plane.

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Hydrothermal synthesis of polymorphic titania and their structural evolution from potassium titanate whisker

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