Polymer tungsten, also known as tungsten resin and tungsten rubber, is a product made by combining various resin materials with tungsten powder particles in different proportions. Wherein, tungsten accounts for 60% of the product volume, but the weight accounts for more than 96% of the entire product; the resin material can be polypropylene, polybutene, polyurethane, thermoplastic materials, etc.

Yellow tungsten oxide as a photocatalytic material can be used to produce hydrogen by photolysis of water. According to the experts, the photocatalytic material used for hydrogen production from photolysis of water should have good light corrosion resistance, electrolyte corrosion resistance, as well as a suitable forbidden band width.

How to prepare WO3 hollow sphere? The experts have proposed a method for preparing WO3 hollow spheres at a lower temperature. This method can improve the utilization rate of WO3 catalyst to the light source, thereby reducing the cost.

Yellow tungsten oxide applied for photocatalytic degradation is known as tungsten trioxide or WO3, which has the characteristics of a small forbidden band width. And the absorption edge of WO3 extends into the visible light region. So, tungsten trioxide exhibits good photocatalytic degradation effect under visible light irradiation.