V2O5/WO3-TiO2 selective catalytic reduction (SCR) catalysts with a V2O5 loading of 1.7, 2.0, 2.3, 2.6, 2.9, 3.2 and 3.5 wt. % were investigated in the fresh state and after hydrothermal aging at 600 °C for 16 h. The catalysts were characterized by means of nitrogen physisorption, X-ray diffraction and X-ray absorption spectroscopy. In the fresh state, the SCR activity increased with increasing ...

Time-resolved terahertz (THz) spectroscopy and open circuit photovoltage measurements were employed to examine the sizedependent charge carrier dynamics of tungsten oxide (WO3) particles. Specifically, films of commercially available WO3 nanoparticles (NP) and granular particles (GP) with diameters of 77 ± 34 nm and 390 ± 260 nm, respectively, were examined in air and also while immersed in 0.1...

Systematic studies of nanocrystalline nickel tungstate, NiWO4, thin films were performed by several experimental techniques such as Ni Kand W L1,3-edges X-ray absorption spectroscopy, X-ray diffraction, Raman spectroscopy, atomic force microscopy and cyclic voltammetry measurements. We found that the NiWO4 thin films exhibit electrochromic properties similar to that of amorphous tungsten trioxi...

Tungsten trioxide is the second most commonly used semiconducting metal oxide in gas sensors. Semiconducting metal oxide (SMOX)-based sensors are small, robust, inexpensive and sensitive, making them highly attractive for handheld portable medical diagnostic detectors. WO₃ is reported to show high sensor responses to several biomarkers found in breath, e.g., acetone, ammonia, carbon monoxide, h...

This current work revealed a single-step fabrication of tungsten oxide nanoflakes (WO3 NFs) with the help Terminalia arjuna bark extract. Bioactive phytoconstituents T. extract were involved in nucleation process and promoted material crystalline growth particular direction. The as-prepared sample thermal decomposition was analyzed by TG/DTG. annealed at 300 °C for 2 h, characterized UV-Vis-DRS...

The inkjet printing of the functional materials prepared by sol-gel route is gaining attention for production variety applications not limited to printed boards, displays, smart labels, packaging, sensors and solar cells. However, due gelation process associated with changes from Newtonian non-Newtonian fluid inks extremely complex. In this study we reveal in-depth rheological characterization ...

Tungsten trioxide (WO₃) possesses a small band gap energy of 2.4-2.8 eV and is responsive to both ultraviolet and visible light irradiation including strong absorption of the solar spectrum and stable physicochemical properties. Thus, controlled growth of one-dimensional (1D) WO₃ nanotubular structures with desired length, diameter, and wall thickness has gained significant interest. In the pre...