Paper Title:
Enhancement of Calcia Doped Ceria Nanoparticles Performance as UV Shielding Material
  Abstract

Calcia-doped ceria is of potential interest as an ultraviolet (UV) radiation blocking material in personal care products because of its excellent UV light absorption property and low catalytic ability for the oxidation of organic materials superior to undoped ceria. The performance of calcia doped ceria needs more enhancement through further control of its oxidation catalytic activity and improvement of its covering ability. In order to reduce the oxidation catalytic activity further, calcia-doped ceria was coated with amorphous silica by means of seeded polymerization technique. Generally, nanoparticles of calcia doped ceria do not provide a good coverage for human skin because of the agglomeration of the nanoparticles. The platy particles are required to enhance the covering ability of calcia doped ceria. This can be accomplished by synthesis of calcia-doped ceria/plate-like material (e.g., potassium lithium titanate (K0.8Li0.27Ti1.73O4) and mica) nanocomposite with subsequent silica coating. Calcia-doped ceria/plate-like material was prepared by soft chemical method followed by silica coating via seeded polymerization technique. Silica coated calcia-doped ceria/plate-like material nanocomposite was characterized by X-ray diffraction, SEM, TEM, XPS and FT-IR.

  Info
Periodical
Edited by
P. VINCENZINI
Pages
673-678
DOI
10.4028/www.scientific.net/AST.45.673
Citation
A. M. El-Toni, S. Yin, T. Sato, "Enhancement of Calcia Doped Ceria Nanoparticles Performance as UV Shielding Material", Advances in Science and Technology, Vol. 45, pp. 673-678, 2006
Online since
October 2006
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Ke Hui Qiu, Yan Rong Wang, Pei Cong Zhang, Wei Zhang
119
Authors: Tsugio Sato, Ahmed Mohamed El-Toni, Shu Yin, Hisao Hidaka
Abstract:White nanoparticles of calcia-doped ceria were prepared from the precipitate by reacting CeCl3-CaCl2 mixed solution with NaOH solution at pH...
293
Authors: C. Benmouhoub, A. Kadri, N. Benbrahim, S. Hadji
Abstract:Nanoparticles of cerium oxide (CeO2) are synthesized with cerium (III) nitrates (Ce(NO3)3, 6H2O) by precipitation method in ammonium hydroxyl...
189
Authors: Lei Wang, Guang Sheng Guo, Fu Bo Gu, Zhi Hua Wang
Abstract:Three different CeO2 sphere nanomaterials (hollow sphere, flowerlike sphere, spherical cluster) were controllably synthesized by carbon...
428
Authors: Jing Xu, Qing Hua Chen, Xin Ping Liu, Bao Quan Huang, Qing Rong Qian
Chapter 2: Environmental Materials and Processes
Abstract:A nanoscale ceria-doped calcia solid solution has been synthesized by controled self-combustion method. The difference in crystal structure...
547