The molecular formula of oxygen vacancy nano-tungsten oxide isn’t a fixed expression due to the presence of oxygen vacancies (i.e., missing oxygen atoms), which affect its stoichiometry. In an ideal chemical stoichiometry, tungsten trioxide is represented by the formula WO3\text{WO}_3WO3. However, due to oxygen vacancies in oxygen vacancy nano-tungsten oxide, the formula is typically denoted as WO3−x\text{WO}_{3-x}WO3−x, where xxx represents the number of missing oxygen atoms.
It’s important to note that this formula is a simplified way to express the presence of oxygen vacancies and doesn’t capture the actual molecular structure. On the nanoscale, factors such as particle size, morphology, surface state, and the concentration and distribution of oxygen vacancies all impact the crystal structure and properties of oxygen vacancy nano-tungsten oxide.
The precise molecular formula or stoichiometry for oxygen vacancy nano-tungsten oxide depends on specific synthesis methods and experimental conditions, as these factors influence the number and distribution of oxygen vacancies.
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