TITLE:
Influence of pH and Ultrasonic Treatment on Preparation of Titanium Phosphates and Their Powder Properties
AUTHORS:
Hiroaki Onoda, Syohei Fujikado
KEYWORDS:
White Pigment, Titanium Phosphates, Photocatalytic Activity, Smoothness
JOURNAL NAME:
Journal of Materials Science and Chemical Engineering,
Vol.2 No.5,
May
21,
2014
ABSTRACT: Titanium oxide that has the
photocatalytic activity is used as the white pigment for cosmetics. A certain degree of sebum on the skin is
decomposed by the ultraviolet radiation in sunlight. In this work, as a novel white pigment, titanium phosphates were prepared from titanium sulfate and phosphoric
acid at pH 5, 7, and 9, with/without ultrasonic
treatment for cosmetics. Their chemical composition, powder properties, photocatalytic activity,
color phase, moisture retention, and smoothness were studied. These titanium
phosphates had less photocatalytic activity to protect the sebum on the skin. Sample prepared at pH 7 without ultrasonic treatment had higher
moisture retention than other samples. All samples obtained in this work had
the suitable smoothness for cosmetics.