| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 7897629 | Journal of Asian Ceramic Societies | 2017 | 4 Pages |
Abstract
As novel green pigment, various sodium iron phosphates, Na4Fe7(PO4)6, NaFe4(PO4)3, and Fe3(PO4)2, imitated with Xenophillite and Vivianite, were synthesized using a hydrothermal process. The obtained powders were estimated with X-ray diffraction (XRD), Infrared (IR) spectra, ultraviolet-visible (UV-vis) reflectance spectra, and L*a*b* color space. The hydrothermal temperature and time, volume of water, phosphorus resource were studied in this process. All samples prepared in this work were dark green powders. The weak peaks of Na4Fe7(PO4)6 and Fe3(PO4)2 were observed in XRD patterns of all samples. Hydrothermal treatment of a long duration produced high greenish powders. The large volume of water used improved the greenish and bluish colors of the phosphate powders.
Keywords
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
Hiroaki Onoda, Kyosei Sugimoto,