The morphologies of metal oxide nanoparticles may be varied by imposition of an electric field during growth. These varying morphologies give improved efficiencies for gas sensing (monoclinic gamma-WO3) and photocatalysis (TiO2 anatase). We propose total scattering analysis of nanoparticulate TiO2 anatase and monoclinic gamma-WO3 grown in a variety of electric field conditions using NIMROD. Reverse Monte Carlo analysis of the data will enable us to correlate the properties of these materials with their local structure. Our results will give a greater understanding of the differences induced by imposing an E-field during the growth of these nanoparticulate materials and help address the wider issue of how to resolve the local structure of nanomaterials.