Synthesis of High Near-Infrared Reflective Black Pigment Based on YMn2O5
Abstract
:1. Introduction
2. Materials and Methods
2.1. Synthesis
2.2. Characterization
3. Results and Discussion
3.1. Y(Mn0.95M0.05)2O5 (M = Al, Fe, Ga, Ti, and Zr)
3.1.1. X-ray Powder Diffraction (XRD)
3.1.2. Ultraviolet–Visible–Near-Infrared (UV–Vis–NIR) Reflectance Spectra
3.1.3. Color Properties
3.2. Y(Mn1−xFex)2O5 (0 ≤ x ≤ 0.15)
3.3. Y(Mn1−xGax)2O5 (0 ≤ x ≤ 0.20)
3.3.1. X-ray Powder Diffraction (XRD)
3.3.2. Ultraviolet–Visible–Near-Infrared (UV–Vis–NIR) Reflectance Spectra
3.3.3. Color Properties
3.3.4. Chemical Stability Test
4. Conclusions
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Conflicts of Interest
References
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Sample | Y(NO3)3·6H2O | (CH3COO)2Mn·4H2O | Reagent of Dopant | CA |
---|---|---|---|---|
YMn2O5 | 1.3739 g | 1.7582 g | — | 4.1350 g |
Y(Mn0.95Al0.05)2O5 | 1.3879 g | 1.6872 g | Al(NO3)3·9H2O 0.1360 g | 4.1766 g |
Y(Mn0.95Fe0.05)2O5 | 1.3735 g | 1.6699 g | Fe(NO3)3·9H2O 0.1448 g | 4.1335 g |
Y(Mn0.95Ga0.05)2O5 | 1.3666 g | 1.6617 g | Ga(NO3)·8H2O 0.1426 g | 4.1129 g |
Y(Mn0.95Ti0.05)2O5 | 1.3775 g | 1.6746 g | [(CH3)2CHO]4Ti 0.1022 g | 4.1455 g |
Y(Mn0.95Zr0.05)2O5 | 1.3564 g | 1.6489 g | ZrO(NO3)2·2H2O 0.0946 g | 4.0819 g |
Sample | Y(NO3)3·6H2O | (CH3COO)2Mn·4H2O | Fe(NO3)3·9H2O | CA |
---|---|---|---|---|
Y(Mn0.95Fe0.05)2O5 | 1.3735 g | 1.6699 g | 0.1448 g | 4.0973 g |
Y(Mn0.90Fe0.10)2O5 | 1.3729 g | 1.5813 g | 0.2895 g | 4.1322 g |
Y(Mn0.85Fe0.15)2O5 | 1.3725 g | 1.4930 g | 0.4343 g | 4.1308 g |
Sample | Y(NO3)3·6H2O | (CH3COO)2Mn·4H2O | Ga(NO3)·8H2O | CA |
---|---|---|---|---|
Y(Mn0.95Ga0.05)2O5 | 1.3666 g | 1.6617 g | 0.1426 g | 4.1129 g |
Y(Mn0.90Ga0.10)2O5 | 1.3595 g | 1.5658 g | 0.2839 g | 4.0914 g |
Y(Mn0.85Ga0.15)2O5 | 1.3523 g | 1.4710 g | 0.4236 g | 4.0702 g |
Y(Mn0.83Ga0.17)2O5 | 1.3494 g | 1.4335 g | 0.4790 g | 4.0616 g |
Y(Mn0.80Ga0.20)2O5 | 1.3452 g | 1.3773 g | 0.5617 g | 4.0489 g |
Sample | L* | a* | b* | C | R |
---|---|---|---|---|---|
YMn2O5 | 28.2 | +2.83 | −0.44 | 2.86 | 42.9 |
Y(Mn0.95Al0.05)2O5 | 27.5 | +4.95 | +1.73 | 5.24 | 39.5 |
Y(Mn0.95Fe0.05)2O5 | 25.5 | +3.24 | +0.10 | 3.24 | 43.5 |
Y(Mn0.95Ga0.05)2O5 | 25.8 | +3.93 | +0.53 | 3.97 | 43.7 |
Y(Mn0.95Ti0.05)2O5 | 25.2 | +2.58 | +0.20 | 2.59 | 31.2 |
Sample | L* | a* | b* | C | R |
---|---|---|---|---|---|
YMn2O5 | 28.2 | +2.83 | −0.44 | 2.86 | 42.9 |
Y(Mn0.95Fe0.05)2O5 | 25.3 | +3.24 | +0.10 | 3.24 | 43.5 |
Y(Mn0.90Fe0.10)2O5 | 26.2 | +2.07 | −0.98 | 2.50 | 37.7 |
Y(Mn0.85Fe0.15)2O5 | 24.7 | +1.58 | +1.02 | 1.88 | 28.1 |
Sample | L* | a* | b* | C | R |
---|---|---|---|---|---|
YMn2O5 | 28.2 | +2.83 | −0.44 | 2.86 | 42.9 |
Y(Mn0.95Ga0.05)2O5 | 25.8 | +3.93 | +0.53 | 3.97 | 43.7 |
Y(Mn0.90Ga0.10)2O5 | 27.0 | +4.30 | +0.74 | 4.36 | 45.4 |
Y(Mn0.85Ga0.15)2O5 | 25.8 | +4.82 | +1.25 | 4.98 | 47.6 |
Sample | L* | a* | b* | C | R |
---|---|---|---|---|---|
Y(Mn0.85Ga0.15)2O5 | 25.8 | +4.82 | +1.25 | 4.98 | 47.6 |
YMnO3 | 22.6 | −2.17 | −9.04 | 9.30 | 43.9 |
Black 6350 | 25.3 | +1.20 | +4.06 | 4.23 | 41.3 |
Black 6301 | 23.7 | +0.43 | +1.05 | 1.13 | 38.7 |
MPT-370 | 23.0 | +0.67 | −0.27 | 0.72 | 44.0 |
Treatment | L* | a* | b* | C | R |
---|---|---|---|---|---|
As synthesized | 25.8 | +4.82 | +1.25 | 4.98 | 47.6 |
4% CH3COOH | 25.2 | +4.39 | +1.07 | 4.52 | 42.8 |
4% NH4HCO3 | 24.3 | +4.49 | −1.20 | 4.65 | 42.2 |
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Yamaguchi, K.; Mochizuki, S.; Nagato, Y.; Morimoto, T.; Masui, T. Synthesis of High Near-Infrared Reflective Black Pigment Based on YMn2O5. Colorants 2023, 2, 705-715. https://doi.org/10.3390/colorants2040036
Yamaguchi K, Mochizuki S, Nagato Y, Morimoto T, Masui T. Synthesis of High Near-Infrared Reflective Black Pigment Based on YMn2O5. Colorants. 2023; 2(4):705-715. https://doi.org/10.3390/colorants2040036
Chicago/Turabian StyleYamaguchi, Kazuki, Satoru Mochizuki, Yudai Nagato, Takuro Morimoto, and Toshiyuki Masui. 2023. "Synthesis of High Near-Infrared Reflective Black Pigment Based on YMn2O5" Colorants 2, no. 4: 705-715. https://doi.org/10.3390/colorants2040036