A comparative study on different RE-doped (RE=Pr, Nd, Sm) SrCuSi 4 O 10 blue pigments with high near-infrared reflectance

Jing, Jie; Zhang, Yanshuang; Sun, Jiaxiang; Zhao, Xuejiao; Gao, Dingsan; Zhang, Yujun

doi:10.1016/j.dyepig.2017.10.045

Cited by 21 publications

(7 citation statements)

References 18 publications

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“…In particular, sunlight in the wavelength range of 700–1300 nm plays the most significant role in heat generation because this constitutes 80% of the total energy in the NIR region . Therefore, pigments that can reflect NIR light in this region are desirable and several related studies have been reported. − …”

Section: Introductionmentioning

confidence: 99%

Raman Spectroscopic Investigation and Electronic State Calculation for Ca₂(Mn,Ti)O₄ Black Pigments with High Near-Infrared (NIR) Reflectivity

Oka

Hayakawa

2022

Inorg. Chem.

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Layered perovskite A 2 BO4 compounds were studied by a combination of X-ray powder diffraction (XRD) analysis, Raman spectroscopy, and density functional theory (DFT) calculations. Ti4+-doped Ca2MnO4 ceramics with high near-infrared (NIR) reflectivity were selected as a test case. After elucidating their crystal structures (I41/acd) by XRD analysis, Raman spectroscopy was applied. Raman peaks were observed at approximately 178, 290, 330, 463, 500, and 562 cm–1, which were confirmed by DFT calculations, and were in modes identical to those reported for Sr2IrO4 in the same space group. An additional peak was observed at approximately 780 cm–1 for the Ti4+-doped samples, indicating that a silent A2g mode was activated by doping with Ti4+, similar to the A1g (breathing) mode found in B-site-substituted simple perovskite and B-site-ordered double perovskite structures. The XRD patterns of the doped samples did not exhibit any additional X-ray reflections, except for the pattern typical of nondoped Ca2MnO4. Thus, these results were attributed to the presence of the Ti–Ti correlation with a certain distance. The calculated band gap energies of Ca2MnO4 and Ca2Mn0.75Ti0.25O4 were approximately 1.8 eV, which was in reasonable agreement with the experimental value. The DFT calculations also revealed that one of the factors contributing to the enhancement of NIR reflectivity upon introduction of Ti4+ ions is the reduced density of states (DOS) near the Fermi level.

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Section: Introductionmentioning

confidence: 99%

Raman Spectroscopic Investigation and Electronic State Calculation for Ca₂(Mn,Ti)O₄ Black Pigments with High Near-Infrared (NIR) Reflectivity

Oka

Hayakawa

2022

Inorg. Chem.

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“…In recent years, near-infrared (NIR) reflective pigments have received considerable attention in construction, plastic, ink, and military industries. NIR reflective pigments are complex metal oxides with high reflectance for NIR radiation (Song et al, 2019;Ali et al, 2018;Rossi et al, 2020;Jing et al, 2018;Zhou et al, 2020). The everyday use of solar reflective roofing materials has been proven to save energy, alleviate urban heat islands, and curb global warming (Ferrari et al, 2015;Zou and Zhang, 2020;Yang et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Characterisation of Mg2+ and Al3+ Co-Doped CoCr2O4 Inorganic Pigments With High Near-Infrared Reflectance

et al. 2022

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A new class of near-infrared (NIR) reflectance pigments based on Co1−xMgxCr2−yAlyO4 (x = 0–1 and y = 0–2) was synthesised using the Pechini-type sol-gel process. The developed powders were characterised by thermogravimetry and differential scanning calorimetry, X-ray diffraction (XRD), ultraviolet–visible near-infrared diffuse reflectance spectroscopy, and colour Commission Internationale del'Eclairage (CIE) 1976 (L*a*b*) colour scales. The XRD patterns revealed characteristic peaks of the spinel structure with good crystallinity. Substituting Mg2+ for Co2+ ions in the tetrahedral positions and Al3+ for Cr3+ ions in the octahedral positions of CoCr2O4 reduces the cost and changes the colour of the pigment (green to yellow and then blue). Moreover, the synthesised pigments exhibited high NIR solar reflectance in the 780–2,500 nm wavelength range. The thermal and chemical stability of the pigments was also studied. Our findings demonstrate the potential for applying these pigments in cool colourants.

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“…Admittedly, the use of cobaltbased blue pigments in the ceramic industries leads to a more intense shade, after treatment at high temperature, but this metal is expensive which increases the manufacturing cost. This suggests reducing the amount of cobalt via other combinations of oxides or looking for other materials that would have almost similar optical properties [9][10][11][12]. Quite recently, considerable attention has been paid to prepare different compounds doped with other metal cations which allow to have a shades of blue colour by reducing the amount of cobalt [13][14][15].…”

Section: Introductionmentioning

confidence: 99%

Correlation between degree of crystallinity and bluing of Zn1–Co Al2O4 (0≤x≤1) nanopowders prepared by soft chemistry route

Jabbar

Lakhlifi

Ouatib

et al. 2021

Ceramics International

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Correlation between degree of crystallinity and bluing of Zn 1-x Co x Al 2 O 4 (0≤x≤1) nanopowders prepared by soft chemistry route, Ceramics International, https://doi.org/10.1016/ j.ceramint.2021.02.205. This is a PDF file of an article that has undergone enhancements after acceptance, such as the addition of a cover page and metadata, and formatting for readability, but it is not yet the definitive version of record. This version will undergo additional copyediting, typesetting and review before it is published in its final form, but we are providing this version to give early visibility of the article. Please note that, during the production process, errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain.

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A comparative study on different RE-doped (RE=Pr, Nd, Sm) SrCuSi 4 O 10 blue pigments with high near-infrared reflectance

Cited by 21 publications

References 18 publications

Raman Spectroscopic Investigation and Electronic State Calculation for Ca₂(Mn,Ti)O₄ Black Pigments with High Near-Infrared (NIR) Reflectivity

Raman Spectroscopic Investigation and Electronic State Calculation for Ca₂(Mn,Ti)O₄ Black Pigments with High Near-Infrared (NIR) Reflectivity

Synthesis and Characterisation of Mg2+ and Al3+ Co-Doped CoCr2O4 Inorganic Pigments With High Near-Infrared Reflectance

Correlation between degree of crystallinity and bluing of Zn1–Co Al2O4 (0≤x≤1) nanopowders prepared by soft chemistry route

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A comparative study on different RE-doped (RE=Pr, Nd, Sm) SrCuSi 4 O 10 blue pigments with high near-infrared reflectance

Cited by 21 publications

References 18 publications

Raman Spectroscopic Investigation and Electronic State Calculation for Ca2(Mn,Ti)O4 Black Pigments with High Near-Infrared (NIR) Reflectivity

Raman Spectroscopic Investigation and Electronic State Calculation for Ca2(Mn,Ti)O4 Black Pigments with High Near-Infrared (NIR) Reflectivity

Synthesis and Characterisation of Mg2+ and Al3+ Co-Doped CoCr2O4 Inorganic Pigments With High Near-Infrared Reflectance

Correlation between degree of crystallinity and bluing of Zn1–Co Al2O4 (0≤x≤1) nanopowders prepared by soft chemistry route

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Raman Spectroscopic Investigation and Electronic State Calculation for Ca₂(Mn,Ti)O₄ Black Pigments with High Near-Infrared (NIR) Reflectivity

Raman Spectroscopic Investigation and Electronic State Calculation for Ca₂(Mn,Ti)O₄ Black Pigments with High Near-Infrared (NIR) Reflectivity