Nano Tungsten Trioxide Applied for Office Building Heat Insulating Glass Coating

Nano tungsten trioxide is an important thermal insulation nano material for the production of office building heat insulating glass coating. The prepared thermal insulation coating has excellent waterproof, fireproof and dustproof characteristics with high transparency. Also, it is environmentally friendly. Therefore, it is believed that tungsten oxide thermal insulation coating is promising for applying to the office buildings for energy conservation.

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Well, do you know how to prepare the raw material tungsten trioxide? According to the experts, the tungsten trioxide can be prepared via a three-step process, involving wet-chemical synthesis of hydrated WO3, mechanical exfoliation of fundamental layers and dehydration by annealing at 300 °C. And the atomic force microscopy reveals that the minimum resolvable thickness of the hydrated flakes to be 1.4 nm, which corresponds to the unit-cell height. The subsequent annealing temperature determines the degree of dehydration and the crystal structure of the prepared WO3. The hydrated and dehydrated flakes are characterized by Raman spectroscopy to reveal spectroscopic fingerprints of flake thickness. Thin flakes are also shown to have higher propensity for lithium intercalation, which is also evidenced in Raman planar peak intensity.

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