Abstract

Recently, the polymer pyrolysis method by means of acrylic acid and metal salts has been developed for prepatation of different metal oxides. The co-polymeric precursor compounds are schematically supposed to have metal ions attached by the ionic bonds to carboxylate ions in a polymeric chain or between the polymeric chains. This uniform distribution of metal ions and in the precursor favors the formation of uniformly distributed solid solution of the metallic oxides in the pyrolysis process. In this work, a trimetallic oxide as a pigment with high near-infrared (NIR) reflectance was synthesized by reaction of titanium butoxide with metal acetate (M = Mn, Ni, Ti) in acrylic acid via polymer pyrolysis method. The pigment properties of the oxide were investigated by X-ray diffraction (XRD), field-emission scanning electron microscopy (FESEM) and NIR diffuse reflectance spectroscopy (DRS).

Highlights

  • Large-scale application of metal oxides with nanometer size as cool colors with special optical properties have prompted the development of several widely used methods, including sol-gel coprecipitation, milling, hydrothermal method [1,2,3,4,5,6,7,8,9,10]

  • Nanopigments were prepared by a polymer pyrolysis method

  • With the existence of a large amount of H2O, Ti(C4H9O)4 mainly hydrolyze with the water in situ and lead to an immediate nucleation of Ti(OH)4, which is distributed randomly within the polymer precursor, as shown in Figure 1 [4]

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Summary

Introduction

Large-scale application of metal oxides with nanometer size as cool colors with special optical properties have prompted the development of several widely used methods, including sol-gel coprecipitation, milling, hydrothermal method [1,2,3,4,5,6,7,8,9,10]. The polymer pyrolysis method has some advantages in preparation of nanoparticles: (a) easy operation, (b) easy scale-up in batch form and (c) production of highly homogeneous nanocrystalline particles with excellent magnetic, electrical and optical properties. This method is versatile for various metals and should be suitable for preparation of inorganic nano-pigments [3]. This method is versatile so that various metals can be used It involves the preparation of a polymer precursor that reflects the precise stoichiometry of the end product and allows preparation nanoparticles with a narrow size distribution at a moderate temperature[12].

Experimental
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Conclusion

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