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Synthesis of Novel Manganese Aluminum Phosphate Violet Pigments
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Abstract
Novel violet pigments were synthesized from manganese oxide, aluminum hydroxide, and phosphoric acid by heating at several temperatures. The obtained materials were investigated by X-ray diffraction (XRD) analysis, infrared (IR) spectroscopy, ultraviolet–visible (UV–Vis) reflectance spectroscopy, and L*a*b* color space. Sample synthesized in this work showed no clear peak pattern on XRD analysis. At Mn/Al/P = 1/1/4, sample heated at 400 ° C showed the most violet color. The effect of heating time was small. In addition, the increasing the manganese ratio darkened the sample. Further, we examined the improvement of blue and red by replacing with copper and iron. The blue tint was improved by adding a small amount of copper. On the other hand, a high proportion of iron lost the violet color.
Title: Synthesis of Novel Manganese Aluminum Phosphate Violet Pigments
Description:
Abstract
Novel violet pigments were synthesized from manganese oxide, aluminum hydroxide, and phosphoric acid by heating at several temperatures.
The obtained materials were investigated by X-ray diffraction (XRD) analysis, infrared (IR) spectroscopy, ultraviolet–visible (UV–Vis) reflectance spectroscopy, and L*a*b* color space.
Sample synthesized in this work showed no clear peak pattern on XRD analysis.
At Mn/Al/P = 1/1/4, sample heated at 400 ° C showed the most violet color.
The effect of heating time was small.
In addition, the increasing the manganese ratio darkened the sample.
Further, we examined the improvement of blue and red by replacing with copper and iron.
The blue tint was improved by adding a small amount of copper.
On the other hand, a high proportion of iron lost the violet color.
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