Rosin used as a potential organic precursor in synthesis of blue pigment for ceramic

Single-phase ZnAl2O4 spinel successfully synthesized at low temperatures using rosin as an organic precursor. Co(II) ions were doped to the ZnAl2O4 spinel structure to produce Zn1-xCoxAl2O4 blue pigments (x = 0.1, 0.3, 0.5, 0.7, 0.9). The obtained powders were characterized by Thermal Analysis (TG-DSC), X-ray Diffraction (XRD), Fourier transform infrared (FTIR) spectroscopy and CIE L*a*b* colorimetry. The TG-DSC data suggested that the calcination temperature of ZnAl2O4 spinel formation started from 900 degrees C. Besides, XRD results showed that the spinel structure calcinated for 4 h, at 1000 degrees C with 15 degrees C/min heating rate had good crystallinity. The intensity of blue color increased gradually with the content of Co(II). The obtained pigments which presented high thermal stability were suitable for the production of enamel.

Automated summary

Single-phase ZnAl2O4 spinel was successfully synthesized at low temperatures using rosin as an organic precursor, and Co(II) ions were doped to produce Zn1-xCoxAl2O4 blue pigments. The obtained pigments showed high thermal stability and were suitable for enamel production.