Formation of uniform TiO2 nanoshell on α-alumina nanoplates for effective metallic luster pigments

Su Jin Lee, Myoung Sang You, Sang Hyuk Im

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)


To synthesize non-corroding effect pigment appearing metallic silver in color, we coated uniform anatase TiO2 nanoshell via sol-gel chemistry. Under the reaction condition using 3M TiCl4 aqueous solution: deionized water: HCl solution=0.75mL: 20 mL: 0 mL, ∼50 nm-thick smooth TiO2 nano-shell was fully coated on the surface of α-alumina nanoplates; consequently, the synthesized effect pigments exhibited similar lustering effect and structuring color to commercial effect pigment. Under relatively acidic condition and higher TiCl4 precursor concentration condition (3 M TiCl4 aqueous solution: deionized water:HCl solution=0.75mL: 20 mL: 0.05mL for acidic condition and 1.0 or 1.5mL: 20 mL: 0 mL for higher TiCl4 precursor concentration condition), rougher TiO2 shell was formed.

Original languageEnglish
Pages (from-to)2732-2737
Number of pages6
JournalKorean Journal of Chemical Engineering
Issue number9
Publication statusPublished - 2016 Sept 1
Externally publishedYes

Bibliographical note

Publisher Copyright:
© 2016, Korean Institute of Chemical Engineers, Seoul, Korea.


  • Effect Pigment
  • Metallic Silver Color
  • Roughness Control
  • TiO Shell
  • α-Alumina Nanoplates

ASJC Scopus subject areas

  • General Chemistry
  • General Chemical Engineering


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