Facile preparation of stable palygorskite/methyl [email protected]2 “Maya Violet” pigment

Add time:08/18/2019    Source:sciencedirect.com

Maya Blue pigment has attracted considerable attention owing to their extraordinary stability. The growing interest in this field has largely expanded the study of Maya Blue-like pigments. Inspired by Maya Blue, a stable palygorskite/methyl [email protected]2 (PAL/[email protected]2) “Maya Violet” pigment was fabricated via adsorption of MV by PAL, and then deposition of a layer of SiO2 on the surface by polycondensation of tetraethoxysilane (TEOS) in the presence of cetyltrimethylammonium bromide (CTAB). The weight ratio of MV to PAL is as high as 10%. The pigments were characterized by scanning electron microscopy and a variety of analytical techniques, e.g., Fourier Transform infrared spectroscopy and zeta potential. The results indicate that MV molecules are fixed onto the exterior surface, the grooves and at the entrances of the channels of PAL. The PAL/[email protected]2 pigment shows excellent stability against chemical attacks, e.g., 0.1 M HCl, 0.1 M NaOH and various organic solvents. Different from Maya Blue, grinding and heating treatment are virtually ineffective in improving stability of the PAL/MV pigment. CTAB and the SiO2 layer formed on the surface of PAL/MV contribute greatly to the improved stability of the pigment due to shielding effect. The optimal CTAB/TEOS/ammonia/H2O molar ratio for the surface modification of PAL/MV is 0.24/1/2.89/495.

We also recommend Trading Suppliers and Manufacturers of Pigment Violet 3 (cas 1325-82-2). Pls Click Website Link as below: cas 1325-82-2 suppliers

Prev:Development of a novel nontoxic vivid violet inorganic pigment – Mn3+-doped LaAlGe2O7
Next:Thermosensitive luminous fiber based on reversible thermochromic crystal violet lactone pigment)