Abstract
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.
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Lee, S.J., You, M.S. & Im, S.H. Formation of uniform TiO2 nanoshell on α-alumina nanoplates for effective metallic luster pigments. Korean J. Chem. Eng. 33, 2732–2737 (2016). https://doi.org/10.1007/s11814-016-0106-6
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DOI: https://doi.org/10.1007/s11814-016-0106-6