Synthesis and characterization of novel nanorod superstructures and twin octahedral morphologies of WO3 by hydrothermal treatment

Photocatalytic WO3/TiO2 nanowires: WO3 polymorphs influencing the atomic layer deposition of TiO2

“…The bands at lower wavelength values belong to (O-W-O) deformation modes. 60 The Raman bands of h-WO 3 /TiO 2 nanocomposite (Fig. 2) were broadened, compared to h-WO 3 NWs.…”

“…Another considerable difference was that exclusively in the Raman spectra of h-WO 3 NWs terminal W]O stretching modes were recognizable in the interval of 925-965 cm À1 . 60,[63][64][65] These peaks are common for all types of WO 3 hydrates, and in some cases the appearance of these bands were attributed to surface humidity. 43 The absence of these bands in the spectra of h-and m-WO 3 NPs can be ascribed to the high temperature treatment at 500 and 650 C, respectively.…”

“…The most intense peak at 785 cm À1 along with the bands at 650 and 691 cm À1 can be associated with the stretching vibration modes of (O-W-O). 60,61 The bands at 263 and 320 cm À1 can be assigned to bending vibrations of W-O-W, whereas at 186 cm À1 the lattice vibration mode can be found. 60,62 The Raman spectrum of h-WO 3 NWs was substantially different from that of the h-WO 3 NPs.…”

“…60,61 The bands at 263 and 320 cm À1 can be assigned to bending vibrations of W-O-W, whereas at 186 cm À1 the lattice vibration mode can be found. 60,62 The Raman spectrum of h-WO 3 NWs was substantially different from that of the h-WO 3 NPs. One of the deviances was that the h-WO 3 NW exhibited overlapping bands in the region of 600 and 850 cm À1 .…”

Morphology and phase controlled synthesis of CsxWO3 powders by solvothermal method and their optical properties

“…Recently, synthesizing functional powders by solvothermal or hydrothermal reaction has been attracting attention due to its characteristic of morphology and phase control easily [16,17]. Up to now, various attempts have been focused on the morphology controllable synthesis of tungsten oxides [18][19][20][21][22][23][24]. However, morphology and phased controlled synthesis of Cs x WO 3 have not been investigated systematically.…”