One-step ball-milling synthesis of cesium tungsten bronze nanoparticles and near-infrared shielding performance

Wang, Peng; Liu, Tongyao; Zhao, Sheng; Zhang, Yang; Ren, Zeying; Jiang, Wei; Jiang, Xuchuan

doi:10.1016/j.ceramint.2023.03.268

Cited by 10 publications

(4 citation statements)

References 37 publications

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“…Several strategies (e.g., synthesis, coating, compositing with resin) have been employed to improve the NIR absorption properties of Cs 0.33 WO 3 NPs. For example, the solvothermal method is effective for controlling crystal morphology and facilitating metal doping of Cs 0.33 WO 3 NPs ( e.g ., with Li + , Na + , K + , and Pt + ). − Recent studies have also proposed ball milling and flame-assisted spray pyrolysis as alternative practical processes. However, the R ABS values of the materials synthesized using these approaches were all less than 15 (Table ) because it is difficult to achieve full alkali doping into Cs 0.33 WO 3 NPs.…”

Section: Introductionmentioning

confidence: 99%

Rational Cationic Disorder in Hexagonal Cesium Tungsten Bronze Nanoparticles for Infrared Absorption Materials

Nakakura,

Machida,

Inose

et al. 2024

Inorg. Chem.

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Hexagonal cesium tungsten bronze (Cs 0.33 WO 3 ) nanoparticles (NPs) have attracted attention for their potential applications in near-infrared (NIR) absorbing materials. However, the insufficient Cs doping in Cs 0.33 WO 3 NPs has limited their NIR absorbing capabilities and practical stability. In this study, we demonstrate the transition pathway from intermediate W-defective Cs 0.33 WO 3 NPs synthesized by flame spray pyrolysis to cationic (Cs, W)-disordered Cs 0.33 WO 3 NPs prepared through appropriate heat treatments. Direct atomic observations reveal the basal shear and prismatic (Cs, W)defective planes, which contributed to the disorder of full Cs doping in Cs 0.33 WO 3 NPs. The obtained Cs 0.33 WO 3 NPs with cationic disorder exhibited enhanced practical performance compared with conventional Cs 0.33 WO 3 NPs. Therefore, the developed approach that regulates cationic disorder enables the rational design of defective metal oxides for a variety of applications, including NIR absorbing materials.

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Section: Introductionmentioning

confidence: 99%

Rational Cationic Disorder in Hexagonal Cesium Tungsten Bronze Nanoparticles for Infrared Absorption Materials

Nakakura,

Machida,

Inose

et al. 2024

Inorg. Chem.

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“…for near-infrared radiation shielding with high transmittance in the visible [1,2]. Since the first reported synthesisation of Csdoped tungsten bronze with solid state method by Takeda et al [3], the preparation methods of CWO including hydrothermal [4][5][6][7], solvothermal [8][9][10][11] and solid state reaction [12][13][14] have been widely investigated in recent years.…”

Section: Introductionmentioning

confidence: 99%

Boosted near-infrared shielding properties of cesium-tungsten bronze based on solid state reaction with optimized precursor

Zhang,

Liu,

Wang

et al. 2024

J. Phys. D: Appl. Phys.

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Cesium doped tungsten bronze (CWO) nanoparticles can selectively keep high transmittance in the visible while presenting significant shielding rate in the near-infrared region. How to further improve the optical properties of CWO based on solid state method is crucial to the industry production. Based on changing the particle size and morphology of WO3 precursors, cesium-tungsten bronze powders with different dispersivity and concentrations of Cs+ doping were successfully prepared by solid-phase method. The characterization analysis reveals that the precursors with appropriated surface area and morphology are significant to improve the dispersivity of CWO nanocrystal and increase the density of free carriers, thereby improving the small polariton absorption performance and the local surface plasmon resonance (LSPR) effect. The result provide an effective strategy to boost the optical property of CWO nanocrystal synthesized by optimizing the morphology and size of precursor, which is important to the industry production and practical applications in the field of energy-saving window films.

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“…Under the irradiation of sunlight, the surface temperature of the transparent glass is too high due to the high photothermal conversion ability of the CWO materials, thereby aggravating the heat conduction of the glass and weakening the heat insulation effect of the transparent heat insulation coating. , Therefore, solving the secondary radiation problem of CWO materials is the key to promoting their practical application in the field of building insulation. At present, cesium tungsten bronze nanoparticles prepared by the solvothermal method have uniform and small size compared with the ball milling method, but they are easy to agglomerate, which reduces their shielding effect on near-infrared light . Homogeneous and smaller CWOs have larger specific surface area in contact with infrared light, which makes them have better infrared shielding ability with a less addition amount.…”

Section: Introductionmentioning

confidence: 99%

“…31,36 Therefore, solving the secondary radiation problem of CWO materials is the key to promoting their practical application in the field of building insulation. At present, cesium tungsten bronze nanoparticles prepared by the solvothermal method 37 have uniform and small size compared with the ball milling method, but they are easy to agglomerate, which reduces their shielding effect on near-infrared light. 38 Homogeneous and smaller CWOs have larger specific surface area in contact with infrared light, which makes them have better infrared shielding ability with a less addition amount.…”

Section: Introductionmentioning

confidence: 99%

Silica/Cesium Tungsten Bronze Composite Nanospheres with Synergistically Enhanced Thermal Insulation Properties for Transparent Coatings

Cheng,

Huang,

et al. 2023

ACS Appl. Nano Mater.

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The development of functional thermal insulation materials is of great significance for energy saving and emission reduction in the building field and is meanwhile a powerful strategy for the construction of a low-carbon society. Cesium tungsten bronze nanomaterials (CWO) have attracted increasing attention in the field of transparent coating for their excellent near-infrared shielding performance, but their practical application is severely limited by the problems of particle agglomeration and secondary heat release. Here, silica hollow microspheres (HSNs) with an ultrathin pleated shell and adjustable particle size were prepared with multiblock polyurethane surfactants as a soft template. Silica/cesium tungsten bronze composites (CWO@ HSNs) with synergistically enhanced thermal insulation properties were obtained via the surface modification of HSNs. CWO@HSN composite coatings with appropriate mass ratios of HSNs to CWO show significantly better optical properties and thermal insulation effects than those of CWO coating, with room temperature dropped by up to 11.5 °C and coating surface temperature reduced by 7.3 °C. Notably, the composite process of CWO with HSNs can not only inhibit the agglomeration of CWO but also greatly reduce the secondary heat release of the coatings, indicating an effective solution for improving the application performance of nanoscale cesium tungsten bronze in the field of building thermal insulation.

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One-step ball-milling synthesis of cesium tungsten bronze nanoparticles and near-infrared shielding performance

Cited by 10 publications

References 37 publications

Rational Cationic Disorder in Hexagonal Cesium Tungsten Bronze Nanoparticles for Infrared Absorption Materials

Rational Cationic Disorder in Hexagonal Cesium Tungsten Bronze Nanoparticles for Infrared Absorption Materials

Boosted near-infrared shielding properties of cesium-tungsten bronze based on solid state reaction with optimized precursor

Silica/Cesium Tungsten Bronze Composite Nanospheres with Synergistically Enhanced Thermal Insulation Properties for Transparent Coatings

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