In recent years, with the increase of environmental and energy saving concern, there has been a great demand for transparent and solar heat shielding coatings for windows of buildings and automotives. Application of heat shielding materials requires high visible transparency and excellent near-infrared (780-2500nm) shielding ability. In this work, we have reported facile solvothermal synthesis of NIR absorbing CsxWO3 via benzyl alcohol route. Hexagonal CsxWO3 nanorods with average size of 80 nm were synthesized in 2 hours reaction time at low reaction temperature (240oC) in the presence of oleic acid capping agent. The welldispersed CsxWO3 nanorod in a stable water based sol-gel coating has been prepared. The result showed high transparency (ca. 80-90%) in the visible light with strong near infrared (NIR) light shielding (80-90%). The practical application of this work can provide internal comfort for automotives and buildings as well as reduces the energy consumption for air conditioning that should result in a decrease of carbon dioxide emission.

Facile solvothermal synthesis of NIR absorbing CsxWO3 nanorods and their water based sol-gel coatings

248th National Meeting (2014)

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