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

To synthesize non-corroding effect pigment appearing metallic silver in color, we coated uniform anatase TiO 2 nanoshell via sol-gel chemistry. Under the reaction condition using 3M TiCl 4 aqueous solution: deionized water: HCl solution=0.75mL: 20 mL: 0 mL, ∼50 nm-thick smooth TiO 2 nano-shell was f...

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Bibliographic Details
Published in:The Korean journal of chemical engineering 2016, 33(9), 198, pp.2732-2737
Main Authors: Lee, Su Jin, You, Myoung Sang, Im, Sang Hyuk
Format: Article
Language:English
Subjects:
Aluminum oxide
Anatase
Aqueous solutions
Biotechnology
Catalysis
Chemical synthesis
Chemistry
Chemistry and Materials Science
Color
Deionization
Industrial Chemistry
Industrial Chemistry/Chemical Engineering
Materials Science
Pigments
Polymer
Precursors
Silver
Sol-gel processes
Titanium chlorides
Titanium dioxide
화학공학
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Summary:To synthesize non-corroding effect pigment appearing metallic silver in color, we coated uniform anatase TiO 2 nanoshell via sol-gel chemistry. Under the reaction condition using 3M TiCl 4 aqueous solution: deionized water: HCl solution=0.75mL: 20 mL: 0 mL, ∼50 nm-thick smooth TiO 2 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 TiCl 4 precursor concentration condition (3 M TiCl 4 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 TiCl 4 precursor concentration condition), rougher TiO 2 shell was formed.
ISSN:0256-1115
1975-7220
DOI:10.1007/s11814-016-0106-6