Journal of Inorganic Materials ›› 2012, Vol. 27 ›› Issue (9): 984-990.DOI: 10.3724/SP.J.1077.2012.11677

• Research Paper • Previous Articles     Next Articles

Synthesis and Characterization of Pr-ZrSiO4 Pigment by a Two-step Method

CAO Kun-Wu1,2, GUO Xu-Hong2, GAO Yan-Feng1, LUO Hong-Jie1   

  1. (1. Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China; 2. State-Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China)
  • Received:2011-10-29 Revised:2012-02-29 Published:2012-09-20 Online:2012-08-28
  • About author:CAO Kun-Wu.
  • Supported by:

    National Natural Science Foundation of China(51172265); Shanghai Nano Science and Technology Special Project (1052nm02100)

Abstract: Nanoscale praseodymium-doped zircon yellowish pigment was prepared by a two-step new method using ZrOCl2•8H2O, Na2SiO3•9H2O and Pr6O11 as raw materials. Intermediate nanopowders were hydrothermally synthesized firstly, then these intermediate powders were calcined at high temperatures to produce nanoscale Pr-zircon yellowish pigment. The products were characterized by XRD, TEM, SEM, reflectance spectra and the CIE L*a*b* parameters. The pH of hydrothermal solution, the hydrothermal temperature and the heat treatment temperature are main factors that influenced the quality of pigment. Low pH is favorable for decreasing the calcination temperatures and producing the pigment with good dispersion and homogeneous sizes. The product with best pigment performance is obtained at the reaction conditions as follows, pH=3.5 of hydrothermal solution, hydrothermal temperature of 220℃ and heat treatment temperature of 900℃.

Key words: zircon, yellow, nano-pigments, hydrothermal, post-heat treatment

CLC Number: