Tungsten trioxide (WO3) has the following common crystal forms:
Monoclinic Tungsten Trioxide
This is the most stable crystal structure of tungsten trioxide, usually monoclinic at room temperature. Monoclinic tungsten trioxide has a typical layered structure, in which tungsten atoms and oxygen atoms form a layered arrangement. This structural form has important properties in optical and electrochemical applications.
Orthorhombic Tungsten Trioxide
Under high temperature conditions, tungsten trioxide can transform into an orthorhombic crystal structure. This structure is relatively little studied, but may have special properties under certain conditions.
Other phases: In addition to the above two common crystal forms, tungsten trioxide can also have other structural phases, such as tetragonal phase and cubic phase. These structural phases appear only under special temperature and pressure conditions.
Different crystal structures can affect the physical and chemical properties of tungsten trioxide, such as optical properties, electrical conductivity and catalytic activity. In practical applications, choosing a suitable crystal structure can adjust the performance of tungsten trioxide according to specific needs.
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