Cerium phosphate nanoparticles with low photocatalytic activity for UV light absorption application in photoprotection

被引：44
作者：
de Lima, Juliana Fonseca [1 ]
Serra, Osvaldo Antonio [1 ]
机构：
[1] Univ Sao Paulo, Dept Quim, FFCLRP, BR-14040901 Ribeirao Preto, SP, Brazil
来源：
DYES AND PIGMENTS | 2013年 / 97卷 / 02期
基金：
巴西圣保罗研究基金会;
关键词：
Cerium; CePO4; ZnO; TiO2; UV filter; Rare earth; OXIDE-DOPED CERIA; ULTRAVIOLET-RADIATION; SHIELDING PROPERTIES; AMORPHOUS CERIUM; DAMAGE; DNA;
D O I：
10.1016/j.dyepig.2012.12.020
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
In this work a pigment material, cerium phosphate (CePO4) was investigated as a new UV filter with excellent morphological characteristics, desirable UV absorption features, low toxicity, and ideal particle size for application in sunscreen formulations. To this end, nanostructured CePO4 were synthesized by two different procedures: the Pechini (modified) method with, varying calcination temperatures (700-900 degrees C), and hydrothermal synthesis with different Ce3+vertical bar P3O105- molar ratios, 1:1 and 1:2. The samples were characterized by infrared spectroscopy, X-ray diffraction, scanning electron microscopy, diffuse reflectance spectroscopy, and photocatalytic activity. The excellent morphological properties, low photocatalytic activity, and high absorption in the UV region of the resulting compound indicated the possible application of CePO4 as a UV filter in sunscreen formulations, in order to substitute the currently employed inorganic UV filters ZnO and TiO2. (C) 2013 Elsevier Ltd. All rights reserved.
引用
收藏
页码：291 / 296
页数：6
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