Aqueous synthesis and photochromic study of Mo/W oxide hollow microspheres

摘要

Mo/W oxide hollow microspheres with MoO _(3) as matrix material were fabricated via a polyethylene glycol (PEG) induced aqueous route. The hierarchical Mo/W oxide samples are constructed by elementary fusiform particles, which were characterized by X-ray powder diffraction (XRD) and scanning electron microscopy (SEM) methods. Initial formed h-WO _(3) crystallites acted as nuclei for subsequent formation of MoO _(3) precipitates, thus Mo/W oxide samples formed through epitaxial growth strategy show weak crystallization because of the lattice mismatch between h-MoO _(3) and h-WO _(3) crystals. The MoO _(3) based Mo/W oxide samples exhibit good photochromic performances compared to unitary h-MoO _(3) and h-WO _(3) crystals.