The concentration of ammonium metatungstate can affect the size and morphology of the resulting tungsten oxide nanoparticles. Generally, higher concentrations of the precursor can lead to the formation of larger nanoparticles, while lower concentrations can lead to the formation of smaller nanoparticles. The concentration can also affect the crystallinity and phase of the nanoparticles. Therefore, the concentration of ammonium metatungstate is an important factor to consider when synthesizing tungsten oxide nanoparticles with specific properties for various applications.
