Blue pigments based on CoxZn1−xAl2O4 spinels synthesized by the polymeric precursor method

Souza, Luiz K.C. de; Zamian, José Roberto; Filho, Geraldo Narciso da Rocha; Soledade, L. E. B.; Santos, I. M. G.; Souza, A. G.; Scheller, Thomas; Angélica, Rômulo Simões; Costa, Carlos Emmerson Ferreira da

doi:10.1016/j.dyepig.2008.09.017

Cited by 167 publications

(88 citation statements)

References 23 publications

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“…Thr absorbtion spectra of the powders calcined at 1000 o C for 30 minutes present absorbtion bands with maximums at 370-430nm, 600 -640nm, 710-760nm. Literature assignes these absorbtion patterns as follows: the width with maximums between 370 -430 nm is attributed to a charge transfer of the Ni 2+ cation [11], that with amximums between 600 -640 nm is characteristic to the tetracoordinated Ni 2+ , and the 710 -760 width is characteristic to the octahedrically coordinated Ni 2+ [1,[11][12][13][14].…”

Section: -Ray Diffraction Analysismentioning

confidence: 99%

“…The unit cell of the normal type spinel, has 8 tetrahedral sites occupied by A 2+ cations, and 16 octahedral sites occupied by B 3+ cations. In the case of the inverse spinel, the 8 tetrahedral sites are occupied by B 3+ cations, and the A 2+ and the rest of the B 3+ cations, occupy the 16 octahedral sites [1]. The formation of a normal or inverse lattice is due to certain factors that influence the cation distribution among the tetrahedral and octahedral sites, factors like the ionic radius and the electronic configuration.…”

Section: Introductionmentioning

confidence: 99%

“…[1]. Spinel materials are a class of minerals with the formula AB 2 O 4 , having a highly thermal and chemical resistant structure that corresponds to the high requirements needed by ceramic pigments.…”

Section: Introductionmentioning

confidence: 99%

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Influence of the Ni/Mg Ratio on the Colour of Spinel Pigments Prepared by a Modified Sol – Gel Method

Goga¹,

Dudric²,

Bizo³

et al. 2017

Studia UBB Chemia

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ABSTRACT. This paper focuses on the synthesis and analysis of some spinelstructured, ceramic pigment nanopowders (Mg(1-x)NixAl2O4) using a modified sol -gel method. This study emphasizes the influence of the Ni/Mg ratio and that of the thermal treatment on the properties of the obtained powders. The behavior of the dried gels during calcination was studied by differential thermal analysis. The formation of the spinel structure after calcination was analyzed using x-ray diffraction. The colour of the powders was characterized by UV -VIS spectroscopy, determining the absorption spectra. In addition, the trichromatic coordinates were determined, and the corresponding pigment positions were fixed on the chromaticity diagram.

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Section: -Ray Diffraction Analysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Influence of the Ni/Mg Ratio on the Colour of Spinel Pigments Prepared by a Modified Sol – Gel Method

Goga¹,

Dudric²,

Bizo³

et al. 2017

Studia UBB Chemia

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“…Several methods have been developed for the synthesis of cobalt-blue based systems. The most common methods include sol-gel method, solid-state reaction, micro-emulsion, co-precipitation and polymeric precursor method 5,6 . Sol-gel is high reproducibility and low cost method, which utilize high active compound as precursor, and the raw materials are well mixed in the liquid which undergo hydrolysis to form transparent and stable sol system.…”

Section: Introductionmentioning

confidence: 99%

Preparation and Characterization of Nanoscale Cobalt Blue Pigment for Ceramic Inkjet Printing by Sol-Gel Self-Propagating Combustion

et al. 2017

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Cobalt blue pigments were prepared by self-propagating combustion followed by sol-gel method using aluminum nitrate and cobalt nitrate as the raw material. X ray diffraction (XRD), scanning electron microscopy (SEM), fiber optic spectrometer and colorimetric analysis were used to investigate the effect of reaction temperature, metal ion concentration and dispersant upon the gel formation. The results show that the formation of gel network could be promoted by increasing the concentration of metal ion (0.01~0.2 mol/L) and sol-gel reaction temperature (80~90°C), and the disper-sibility and stability of the pigment powder could be improved with dispersing agent. The dried gel precursor was calcined at 1250 °C to form 200~500 nm cobalt aluminum with spinel structure with highly negative value of b*.

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“…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 above methods can produce highly crystalline and uniformly sized nanoparticles.…”

Section: Introductionmentioning

confidence: 99%

Acrylic acid in the synthesis of a trimetallic nano oxide as NIR reflectance pigment via polymer pyrolysis method

Sharifzadeh¹,

Manteghi

2015

Proceedings of the 19th International Electronic Conference on Synthetic Organic Chemistry

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Recently, the polymer pyrolysis method by means of acrylic acid and metal salts has been developed for preparation 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 Ti(OH)4 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) and field scanning electron microscopy (SEM), NIR diffuse reflectance spectroscopy (DRS).

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Blue pigments based on CoxZn1−xAl2O4 spinels synthesized by the polymeric precursor method

Cited by 167 publications

References 23 publications

Influence of the Ni/Mg Ratio on the Colour of Spinel Pigments Prepared by a Modified Sol – Gel Method

Influence of the Ni/Mg Ratio on the Colour of Spinel Pigments Prepared by a Modified Sol – Gel Method

Preparation and Characterization of Nanoscale Cobalt Blue Pigment for Ceramic Inkjet Printing by Sol-Gel Self-Propagating Combustion

<strong>Acrylic acid in the synthesis of a trimetallic nano oxide </strong><strong>as NIR reflectance pigment <em>via</em> polymer pyrolysis method</strong>

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