Deposition Of WO Research Articles

Highly UV light driven WOx@ZnO nanocomposites synthesized by liquid impregnation method

Abstract Highly UV driven WO x @ZnO nanocomposites were synthesized by liquid impregnation (LI) method. The presence of WO x particles on the surface of ZnO nanorods were verified by TEM and EDX mapping. In addition, the XPS analysis shows that the WO x nanoparticles were a mixture of WO 2 and WO 3 nanoparticles. The photocatalytic enhancement of WO x @ZnO nanocomposites in degrading RhB dye under UV light suggests that deposition of WO x could have pro-longed the separation of electrons (in WO x ) from the holes. More holes were able to diffuse to the surface of photocatalyst and directly oxidized the RhB dye molecules into less harmful by-products.

Deposition of WO 3 doped amorphous hydrogenated carbon film by using liquid phase electrodeposition technique and its mechanical properties

Tungsten trioxide nanoparticles doped amorphous hydrogenated carbon (WO 3/a-C:H) films were successfully fabricated on silicon substrates by electrochemical deposition technique under atmospheric pressure. The as-deposited films were characterized by X-ray photoelectron spectroscopy, Transmission electron microscopy, Fourier transform infrared spectroscopy and Raman spectroscopy, respectively. Results showed that nanocrystalline tungsten trioxide particles with a grain size in the range of 8–12 nm were homogeneously embedded in the amorphous carbon matrix, and the sp 3-hybridized carbon content in the a-C:H films increased. Compared with pure amorphous carbon film, the hardness and elastic recovery were significantly improved due to the doping of WO 3. At the end, an understandable model was proposed to interpret the growth mechanism of the WO 3/a-C:H composite films.

Deposition of WO 3 thin films by the sol—gel method

WO 3 films were multicoated on the microscope slide glass and ITO-coated glass using a tungsten alkoxide type solution by the sol—gel deposition process. The effect of dipping and processing parameters on the structure, optical and electrochemical properties of the film were also investigated. Coating using alkoxide solution was very uniformed for low dipping speed of 0.005 m s −1, but thickness variations across the sample became apparent for dipping speeds greater than 0.007 m s −1. Electrochemical coloration experiments showed that films fired at lower temperatures color more easily than film fired to > 200 °C. Rutherford backscattering spectroscopy studies revealed that K + ions were uniformly distributed throughout the WO 3 layer in the colored sample.