Tungsten Oxide

The chemical formula of pyrochlore type tungsten oxide is  H 2 W 2 O 7 . Pyrochlore type tungsten oxide has recently found its wide applications in many different areas such as photoelectron-chemistry, functional material and sensing. In addition, pyrochlore type tungsten oxide can be used as intermediate product for the industrial production of  WO 3 . There are many kinds of synthesis methods of the pyrochlore type tungsten oxide. And there are two main types: Aurivillius type compound as precursor, pyrochlore type tungsten oxide is obtained by acid treatment. The second method is hydrothermal synthesis method, namely sodium tungstate solution acidification to a certain pH range and it can be obtained by hydrothermal reaction for a certain time. The hydrothermal method that has overwhelming superiorities than others also has its own sets of flaws such as high cost, long reaction time and low quality product. Therefore, how to intensify the preparation process of H 2 W...