A promising inorganic YFeO3 pigments with high near-infrared reflectance and infrared emission

Li, Yueying; Ma, Yan; liu, Wenyuan; Wang, Zhoufu; Líu, Hao; Wang, Xitang; Wei, Hengyong; Zeng, Shenghao; Yi, Nian; Cheng, Gary J.

doi:10.1016/j.solener.2021.08.047

Cited by 18 publications

(5 citation statements)

References 38 publications

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“…In the present work, the rough texture of the particles on mineralizer addition also causes the reflectivity of the samples to increase. Also, the mineralizer-added samples exhibited an increased band gap, leading to a smaller intrinsic absorption zone and a high reflection coefficient . The NIR reflectance drastically enhances in the case of the mineralizer-added black Zn 0.5 Cu 0.5 Fe 2 O 4 pigment from 14 to 45%, which is high for a black pigment.…”

Section: Resultsmentioning

confidence: 98%

Exploration of Near-Infrared-Reflecting Zn_0.5M_0.5Fe₂O₄ Pigment for Sustainable Coatings by Transition Metal Substitutions and a Modifier

Sameera,

Vibin Lal Nayakom Mini,

Athyaparambath

et al. 2023

ACS Appl. Eng. Mater.

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Zinc ferrite pigments have emerged as potential candidates for enabling technology for large-scale energy-saving applications, which are safer, more accessible, and less damaging to the environment when compared to similar rare-earth-based colorants. Introducing transition metals into the ZnFe2O4 host lattice may distort the normally ordered lattice. A mineralizer was employed to further tune the color and infrared (IR)-reflective properties. NaCl lowered the crystallization temperature of the spinel zinc ferrite phase owing to its facilitation of ionic diffusion in solid-state reactions. Using a mineralizer promoted the generation of regular pigment particles to further enhance the optical property, leading to a low-cost, effective green strategy for heat mitigation. The acrylic coating of the pigment over the concrete substrate demonstrated good color consistency and near infrared (NIR) reflectivity (temperature shielding character). The surface temperature difference between the coated and uncoated acrylic binder-based mineralizer-added zinc ferrite was 16.4 °C. Since the synthesized zinc ferrite-based pigments have chemical stability and good NIR reflectivity and color characteristics, they have potential application for exterior energy-saving coatings.

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Section: Resultsmentioning

confidence: 98%

Exploration of Near-Infrared-Reflecting Zn_0.5M_0.5Fe₂O₄ Pigment for Sustainable Coatings by Transition Metal Substitutions and a Modifier

Sameera,

Vibin Lal Nayakom Mini,

Athyaparambath

et al. 2023

ACS Appl. Eng. Mater.

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“…In Figure i, it can be observed that eight silica-oxygen tetrahedral coangled tops combine to form an octahedral ring when viewed perpendicular to the a -axis, and these octahedral rings possess a diameter ranging from 0.6 to 0.7 nm, while calcium ions are located at the edges of these octahedral rings. The stacking of eight-membered rings results in the formation of extensive cavity channels, resembling the structure of cordierite. , This distinctive architecture demonstrates enhanced material emissivity attributed to its nondense cavities that amplify molecular vibration and lattice resonance, , thereby leading to increased dipole moments and improved infrared emissive properties. , …”

Section: Resultsmentioning

confidence: 99%

“…63,64 This distinctive architecture demonstrates enhanced material emissivity attributed to its nondense cavities that amplify molecular vibration and lattice resonance, 62,65 thereby leading to increased dipole moments and improved infrared emissive properties. 66,67 3.5. Radiative Cooling Performance.…”

Section: Porous Calcium Silicate Crystal Structure and Emission Mecha...mentioning

confidence: 99%

Highly Optically Selective and Thermally Insulating Porous Calcium Silicate Composite SiO₂ Aerogel Coating for Daytime Radiative Cooling

Han,

Wang,

Han

et al. 2024

ACS Appl. Mater. Interfaces

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Daytime radiative cooling technology offers a lowcarbon, environmentally friendly, and nonpower-consuming approach to realize building energy conservation. It is important to design materials with high solar reflectivity and high infrared emissivity in atmospheric windows. Herein, a porous calcium silicate composite SiO 2 aerogel water-borne coating with strong passive radiative cooling and high thermal insulation properties is proposed, which shows an exceptional solar reflectance of 94%, high sky window emissivity of 96%, and 0.0854 W/m•K thermal conductivity. On the SiO 2 /CaSiO 3 radiative cooling coating (SiO 2 −CS-coating), a strategy is proposed to enhance the atmospheric window emissivity by lattice resonance, which is attributed to the eight-membered ring structure of porous calcium silicate, thereby increasing the atmospheric window emissivity. In the daytime test (solar irradiance 900W/m 2 , ambient temperature 43 °C, wind speed 0.53 m/s, humidity 25%), the temperature inside the box can achieve a cooling temperature of 13 °C lower than that of the environment, which is 30 °C, and the theoretical cooling power is 96 W/m 2 . Compared with the commercial white coating, SiO 2 −CS-coating can save 70 kW•h of electric energy in 1 month, and the energy consumption is reduced by 36%. The work provides a scalable, widely applicable radiative-cooling coating for building comfort, which can greatly reduce indoor temperatures and is suitable for building surfaces.

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“…On the other hand, the development of new compositions of reflective pigments continues to increase, reaching more potential evaluations. In addition to the high reflectivity, the research field has also been evaluating the functional and long-term performances against surface contamination [69], thermal insulation [70,71], and the synthesis methods in terms of the energy and raw material costs, which were directed for the sol-gel method and rare-earth compounds [72][73][74][75][76][77].…”

Section: Pigmentsmentioning

confidence: 99%

Cool Surface Strategies with an Emphasis on the Materials Dimension: A Review

et al. 2022

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The need to tackle the urban heat island effect demands the implementation of cool surfaces as a mitigation strategy. This study comprehensively reviews the evolution of this research field from a materials perspective. It provides a bibliometric analysis of the relevant literature using the SciMAT software processing of bibliographic records from 1995 to 2020, for the evolution of cool surfaces. The results obtained show an increased interest in the field from 2011 to 2020, particularly for roof applications, and present the scientific evolution of reflective materials. According to the materials dimension adopted by the development of the research field, the study is refined from a bibliometric analysis of 982 selected records for the analysis of five themes: (i) Pigments; (ii) Phase change materials; (iii) Retroreflective materials; (iv) Ceramic materials; and (v) Glass. These materials present promising results in terms of their solar reflectance performances in the mitigation of the urban heat island phenomenon. At the end of this review, recommendations for future studies are provided for the creation of economic and environmentally friendly materials based on waste glass recycling. This study represents a valuable contribution that provides a scientific background with regard to cool surfaces from a materials perspective for future investigations.

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A promising inorganic YFeO3 pigments with high near-infrared reflectance and infrared emission

Cited by 18 publications

References 38 publications

Exploration of Near-Infrared-Reflecting Zn_0.5M_0.5Fe₂O₄ Pigment for Sustainable Coatings by Transition Metal Substitutions and a Modifier

Exploration of Near-Infrared-Reflecting Zn_0.5M_0.5Fe₂O₄ Pigment for Sustainable Coatings by Transition Metal Substitutions and a Modifier

Highly Optically Selective and Thermally Insulating Porous Calcium Silicate Composite SiO₂ Aerogel Coating for Daytime Radiative Cooling

Cool Surface Strategies with an Emphasis on the Materials Dimension: A Review

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A promising inorganic YFeO3 pigments with high near-infrared reflectance and infrared emission

Cited by 18 publications

References 38 publications

Exploration of Near-Infrared-Reflecting Zn0.5M0.5Fe2O4 Pigment for Sustainable Coatings by Transition Metal Substitutions and a Modifier

Exploration of Near-Infrared-Reflecting Zn0.5M0.5Fe2O4 Pigment for Sustainable Coatings by Transition Metal Substitutions and a Modifier

Highly Optically Selective and Thermally Insulating Porous Calcium Silicate Composite SiO2 Aerogel Coating for Daytime Radiative Cooling

Cool Surface Strategies with an Emphasis on the Materials Dimension: A Review

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Product

Resources

About

Exploration of Near-Infrared-Reflecting Zn_0.5M_0.5Fe₂O₄ Pigment for Sustainable Coatings by Transition Metal Substitutions and a Modifier

Exploration of Near-Infrared-Reflecting Zn_0.5M_0.5Fe₂O₄ Pigment for Sustainable Coatings by Transition Metal Substitutions and a Modifier

Highly Optically Selective and Thermally Insulating Porous Calcium Silicate Composite SiO₂ Aerogel Coating for Daytime Radiative Cooling