Development of a Yellow Pigment Based on Bismuth and Molybdenum‐Doped TiO2 for Coloring Polymers. (14th March 2014)

• Record Type: Journal Article
• Authors: da Silva, Renata Martins; Kubaski, Evaldo Toniolo; Cava, Sergio; Moreira, Mario Lúcio; Sequinel, Thiago; Tebcherani, Sergio Mazurek
• Is Part Of: International journal of applied ceramic technology. Volume 12(2015:May/Jun.)Supplement 2
• Page Start: E112
• Page End: E119
• Publication Date: 2014-03-14
• Subjects: Ceramics -- Periodicals; Ceramics -- Technological innovations -- Periodicals; 620.1405
• DOI: 10.1111/ijac.12252
• Languages: English
• ISSNs: 1546-542X

Abstract

Abstract : An inorganic yellow pigment based on TiO2 containing minor amounts of bismuth and molybdenum compounds was developed without rare earths or highly toxic elements. The material was produced starting from a composition of 99% (mol%) of rutile TiO2 and 1% of MoO3, which were previously mixed and calcined at 1200°C. The composition consisted of 99.8% of the above mixture and 0.2% of bismuth(III) nitrate basic hexahydrate. This powder mixture was homogenized and calcined in a tubular furnace at 1200°C, applying different heating rates: 1, 30, 40, and 60°C/min. The yellow color was attributed to the presence of α‐Bi2 O3, γ*‐Bi2 MoO6, and Bi2 Ti2 O7 phases. The powder particle size proved suitable for using the material as an inorganic pigment for polymers. The technological application of the pigment was tested in high‐density polyethylene.