The phase formation processes in 0.25ZnO–0.25Al2O3–0.25WO3–0.25Bi2O3 ceramics with variation the thermal annealing temperature were evaluated this study. According to obtained data on composition dependent temperature, transformation dynamics, which can be written form of ZnO/Bi2O3/WO3/Al2O3 → ZnBi38O60/ZnO/Bi2WO6/WO3 Bi2Al4O9/ZnBi38O60/Bi2WO6/ZnO/WO3 ZnWO4/Bi2WO6/ZnAl2O4/ZnO ZnWO4/Bi2WO6/ZnAl2...

Thin films of ZnWO4, a promising photocatalytic and scintillator material, were deposited for the first time using reactive dual magnetron sputtering procedure. A ZnO target was operated an RF signal, W DC signal. The power on changed so that it would match rate at 25 W. effects process parameters characterized optical spectroscopy, X-ray diffraction, scanning electron microscopy, including ene...

We investigate the effect of synthesized time on the structure, as well as optical properties in ZnWO4 nano rod prepared by hydrothermal method. The prepared rods were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), Raman scattering, absorption and photoluminescent (PL) spectra techniques. The size and morphology of ZnWO4 nano-rod can be controlled by adjusting the...

A rapid screening technique utilizing a modified scanning electrochemical microscope has been used to screen photocatalysts and determine how metal doping affects its photoelectrochemical (PEC) properties. We now extend this rapid screening to the examination of photocatalyst (semiconductor/semiconductor) composites: by examining a variety of ZnWO4/WO3 composites, a 9% Zn/W ratio produced an in...

In the present study, a Bi2WO6/ZnWO4 photocatalyst was successfully constructed by modified hydrothermal synthesis method with di?erent molar concentrations of Bi2WO6 respect to ZnWO4. The variation in changed photocatalytic properties catalyst. synthesized characterized various techniques decipher its structural and spectral properties. interaction Bi2+ ionic charge carriers many-body effects ...

This work reports on the development of the first phonon detectors based on CaMoO4 and ZnWO4 scintillating crystals for the CRESST-II experiment. In particular, a novel technique for the production of the ZnWO4 phonon detector with a separate thermometer carrier was investigated. The influence of the thermal and mechanical treatment on the scintillation light output of CaMoO4 and ZnWO4 crystals...

A new versatile tool, combining Shear Force Microscopy and X-Ray Spectroscopy was designed and constructed to obtain simultaneously surface topography and chemical mapping. Using a sharp optical fiber as microscope probe, it is possible to collect locally the visible luminescence of the sample. Results of tests on ZnO and on ZnWO4 thin layers are in perfect agreement with that obtained with oth...

High crystallinity of ZnWO4 nanoparticles has been successfully synthesized via a highly effective and environmentally friendly microwave route by controlling the reaction time and temperature. The products were characterized by X-ray powder diffraction (XRD), transmission electron microscopy (TEM), and Fourier infrared spectrum (FT-IR). The crystallinity was enhanced with the increase of the r...

The radioactive contamination of ZnWO4 crystal scintillators has been measured deep underground at the Gran Sasso National Laboratory (LNGS) of the INFN in Italy with a total exposure 3197 kg × h. Monte Carlo simulation, time-amplitude and pulse-shape analyses of the data have been applied to estimate the radioactive contamination of the ZnWO4 samples. One of the ZnWO4 crystals has also been te...