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Journal of Advanced Ceramics 2014, 3(4): 326-331 https://doi.org/10.1007/s40145-014-0124-y
Research Article | Open Access | Issue | Published: 30 November 2014

pH-controlled hydrothermal synthesis of titanium phosphates and their powder properties

Show Author's Information Hiroaki ONODA( ),  Taisuke YAMAGUCHI
Department of Informatics and Environmental Sciences, Kyoto Prefectural University, 1-5, Shimogamo Nakaragi-cyo, Sakyo-ku, Kyoto 606-8522, Japan
Keywords:
titanium phosphates, pyrophosphate, pH, photo catalytic activity, smoothness
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ONODA H, YAMAGUCHI T. pH-controlled hydrothermal synthesis of titanium phosphates and their powder properties. Journal of Advanced Ceramics, 2014, 3(4): 326-331. https://doi.org/10.1007/s40145-014-0124-y
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Abstract Full text About this article

Titanium phosphates were prepared from titanium chloride and sodium pyrophosphate at various pH in hydrothermal process as a novel white pigment for cosmetics. Their chemical composition, powder properties, photo catalytic activity, colour phase and smoothness were studied. The obtained materials had a higher Ti/P ratio than that used in preparation conditions because of the formation of titanium oxide and hydroxide. The samples prepared at pH = 4 had particles smaller than 100 µm. Titanium phosphates had less photo catalytic activity to protect the sebum on the skin. The obtained materials in hydrothermal process and their thermal products at 100 ℃ showed high reflectance in the range of visible light.


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About this article

pH-controlled hydrothermal synthesis of titanium phosphates and their powder properties

Show Author's information Hiroaki ONODA( ), Taisuke YAMAGUCHI
Department of Informatics and Environmental Sciences, Kyoto Prefectural University, 1-5, Shimogamo Nakaragi-cyo, Sakyo-ku, Kyoto 606-8522, Japan

Abstract

Titanium phosphates were prepared from titanium chloride and sodium pyrophosphate at various pH in hydrothermal process as a novel white pigment for cosmetics. Their chemical composition, powder properties, photo catalytic activity, colour phase and smoothness were studied. The obtained materials had a higher Ti/P ratio than that used in preparation conditions because of the formation of titanium oxide and hydroxide. The samples prepared at pH = 4 had particles smaller than 100 µm. Titanium phosphates had less photo catalytic activity to protect the sebum on the skin. The obtained materials in hydrothermal process and their thermal products at 100 ℃ showed high reflectance in the range of visible light.

Keywords: titanium phosphates, pyrophosphate, pH, photo catalytic activity, smoothness

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Publication history
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Publication history

Received: 24 June 2014
Revised: 12 August 2014
Accepted: 18 August 2014
Published: 30 November 2014
Issue date: December 2014

Copyright

© The author(s) 2014

Acknowledgements

The authors are grateful to Dr. Takeshi Toyama, Nihon University, Japan, for smoothness measurements.

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Open Access: This article is distributed under the terms of the Creative Commons Attribution License which permits any use, distribution, and reproduction in any medium, provided the original author(s) and the source are credited.

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