• Environmentally benign novel green pigments: Pr1–𝑥Ca𝑥PO4 (𝑥 = 0–0.4)

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    • Keywords


      Green pigment; monazite; diffuse reflectance spectroscopy; PrPO4.

    • Abstract


      Rare earth based materials have recently attracted considerable attention as potential eco-friendly colourants for low temperature as well as high temperature applications. In the present study, we have synthesized a series of Ca-doped PrPO4 compounds with the general formula, Pr1–𝑥Ca𝑥PO4 (𝑥 = 0–0.4 in steps of 0.1) and characterized the compounds by powder X-ray diffraction. All the compositions show a monoclinic monazite structure. The optical properties of the brilliantly coloured pigments [𝐿 (brightness), $a^{\ast}$ (+ red - green), $b^{\ast}$ (+ yellow - blue)] have been examined. These materials can find application as potential green colourants.

    • Author Affiliations


      V Sivakumar1 U V Varadaraju1

      1. Materials Science Research Centre and Department of Chemistry, Indian Institute of Technology Madras, Chennai 600 036, India
    • Dates

  • Bulletin of Materials Science | News

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