Preparation and properties of plate-like titanate (PLT)/calcia-doped ceria (CDC) composites by sol-gel coating method

Xiangwen Liu, Jingxiao Liu, Xiaoli Dong, Shu Yin, Tsugio Sato

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)

Abstract

In order to obtain UV-shielding materials with good comfort, higher safety and effective UV-shielding ability, lepidocrocite type plate-like titanate (K0.8Li0.27Ti1.73O4, donated as: PLT)/calcia-doped ceria (donated as: CDC) composites were synthesized by a sol-gel method. After dissolving Ce(NO3)3·6H2O and Ca(NO3)2·4H2O into absolute ethanol at 40 °C, glacial acetic acid (HAc) and PLT particles dispersed into absolute ethanol were added. Then, the solution was heated at 60 °C to get gel-like substance. This gel was dried in a vacuum oven at 333 K for 5 h, and then, the product was collected and ground in an agate mortar followed by calcination at 1073 K for 2 h to form PLT/CDC composites. By optimization, 20 mass% of CDC was coated by one operation. PLT/CDC composites with higher CDC content were obtained by repeating the coating process. The morphology, catalytic activity for the oxidation of organic material, UV-shielding ability and dynamic friction coefficient of as-obtained PLT/CDC composites were characterized. As a result, broad-spectrum UV-shielding composite materials with good comfort and low oxidation catalytic activity were successfully synthesized.

Original languageEnglish
Pages (from-to)150-154
Number of pages5
JournalJournal of Colloid And Interface Science
Volume336
Issue number1
DOIs
Publication statusPublished - 2009 Aug 1

Keywords

  • Calcia-doped ceria (CDC)
  • Coating
  • Composite
  • Dynamic friction coefficient
  • Oxidation catalytic activity
  • Plate-like titanate (PLT)
  • UV-shielding
  • sol-gel

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Biomaterials
  • Surfaces, Coatings and Films
  • Colloid and Surface Chemistry

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