Tungsten oxide is the potential oxide material in the energy field for its rich content in the earth, highly adjustable composition, high chemical stability at low pH value and excellent conductivity. Now it has wide application in seven fields including electrochromic and photochromic, lithium-ion battery anode materials and heat insulation materials, etc.

The following is to introduce how nano tungsten trioxide is photocatalyzed. Firstly, preparing for a nano tungsten trioxide, then text it photocatalytic properities of water cracking into oxygen and protons. Because the nano tungsten trioxide lack of quality of metals,  it almost no catalysis. Secondly, adding a small amount of platinum and ruthenium dioxide into nano tungsten trioxide to improve its catalytic performance.

With the rapid development of industry, the overuse of oil, natural gas and other resources has caused serious pollution of air and environment. The manufacture of gas sensing material for detecting toxic and harmful gases has became a hot research spot. Nano tungsten trioxide used as gas sensing material can be divided into four structures。

The hydrogen reduction technique of purple tungsten oxide(WO2.72), the formation mechanism of tungsten powder particles and its hydrogen reduction process conditions are analyzed, it is found that WO2.72 is the most suitable raw material for the preparation of nano tungsten powder.