Optically Transparent Polymer Coating Embedded with IR Reflective Rare Earth Yellow Pigment: - Innovative Strategy for Cool Windows

Sheemol, V.N.; A, Peer Mohamed; Ananthakumar, S.

doi:10.1016/j.matpr.2019.02.033

Cited by 2 publications

(1 citation statement)

References 18 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, most of today’s brightly colored and widely available inorganic pigments contain toxic heavy metal elements as the main component (e.g., CdS/CdSe, PbCrO 4 , Sb 2 O 5 ·2PbO) and their applications are severely restricted [ 7 ]. Therefore, the development of eco-friendly and cost-effective inorganic pigments has become a popular research topic in the area of pigments [ 8 , 9 , 10 ].…”

Section: Introductionmentioning

confidence: 99%

Insight into the Effect of Counterions on the Chromatic Properties of Cr-Doped Rutile TiO2-Based Pigments

Zhou

Zhang

Chen³

et al. 2022

Materials

View full text Add to dashboard Cite

Rutile TiO2 pigments codoped with chromophore ion Cr3+ and various charge-balancing ions (i.e., counterions species of Sb, Nb, W and Mo) were prepared by a solid-phase reaction method. The effects of the counterions and calcination temperatures on the phase structure, color-rendering and spectroscopic properties, microstructure, and stability of the synthesized pigments were investigated in detail. The results showed that the introduction of 5–10% counterions improved the solubility of Cr3+ in the TiO2 lattice to form the single-phase rutile pigments calcined at 1100 °C for 2 h. The 10% Cr-doped pigment showed a dark brown color. Depending on the content and type of counterions, the color of the codoped pigments was tailored from yellow to reddish or yellowish-orange to black with different brightness and hue. The influence mechanism of counterions was ascribed to the lattice distortion and variation in the charge balance condition. It was found that the addition of Sb, Nb, or Mo resulted in a remarkable improvement in the NIR reflectance of pigments. The grain growth was inhibited with the codoping of Cr/Sb and Cr/Nb to achieve the nano-sized pigments. In addition, the prepared pigments exhibited good acid and alkali corrosion resistance as well as excellent stability and coloring performance in transparent ceramic glazes.

show abstract