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Novel Orange Color Pigments Based on La3LiMnO7
Ryohei Oka1, Jun-Ichi Koyama2, Takuro Morimoto3
1Field of Advanced Ceramics, Department of Life Science and Applied Chemistry, Graduate School of Engineering, Nagoya Institute of Technology, Gokiso, Showa, Nagoya 466-8555, Aichi, Japan.
Molecules (Basel, Switzerland)
|October 23, 2021
Summary
Researchers synthesized a new inorganic orange pigment, La3LiMn0.97Ti0.03O7, using a solid-state reaction. This environmentally friendly pigment exhibits a brighter orange hue than commercial alternatives, making it a promising sustainable colorant.
Area of Science:
- Materials Science
- Inorganic Chemistry
- Colorants
Background:
- Development of novel inorganic pigments is crucial for sustainable industrial applications.
- Existing orange pigments often face limitations regarding environmental impact or color brilliance.
Purpose of the Study:
- To synthesize and characterize a new inorganic orange pigment based on the La3LiMn1-xTixO7 system.
- To evaluate the optical properties and color intensity of the synthesized material.
- To assess its potential as an environmentally friendly alternative to commercial orange pigments.
Main Methods:
- Solid-state reaction method for sample synthesis.
- Characterization of crystal structure, optical absorption, and color properties.
- Comparison of color parameters (redness a*, yellowness b*) with commercial pigments.
Main Results:
- Single-phase La3LiMn1-xTixO7 was obtained for x ≤ 0.03.
- Samples exhibited strong optical absorption between 400-550 nm and a shoulder peak around 690 nm.
- La3LiMn0.97Ti0.03O7 displayed a brilliant orange color with higher redness and yellowness values than commercial pigments.
Conclusions:
- La3LiMn0.97Ti0.03O7 demonstrates superior color brilliance compared to existing commercial orange pigments.
- The pigment is composed of non-toxic elements, indicating its potential as an eco-friendly inorganic colorant.
- This material represents a promising new development in the field of sustainable inorganic pigments.
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