Cesium Tungsten Bronze Nanopowder Applied for Office Building With Glass Curtain Wall

Cesium tungsten bronze nanopowder for producing office building with glass curtain wall is an effective near-infrared (NIR) absorption and photothermal conversion nanomaterial, so that it is useful in the NIR shielding. And it may find great potential in biomedical application.

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The experts prepared cesium tungsten bronze (Cs0.33WO3) nanoparticles by a stirred bead milling process. By grinding micro-sized coarse powder with grinding beads of 50 μm in diameter, the mean hydrodynamic diameter of Cs0.33WO3 powder could be reduced to about 50 nm in 3 h, and a stable aqueous dispersion could be obtained at pH 8 via electrostatic repulsion mechanism. When the concentration of Cs0.33WO3 nanoparticles was 0.08 wt.%, the solution temperature had a significant increase of above 30°C in 10 min under NIR irradiation (808 nm, 2.47 W/cm2). In addition, they had a photothermal conversion efficiency of about 73% and possessed excellent photothermal stability.

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