Here, we successfully developed the undoped, Ni2+, Cu2+, and Zn2+ doped Zirconia nanoparticles (ZrO2 NPs) by a simple co-precipitation method at room temperature and characterized by various physicochemical measurement techniques to investigate their structure, morphology, and sizes of the particles. The bandgap energy values of doped and undoped ZrO2 NPs were estimated using optical absorption...

In recent years, functionalized metal oxides have been gaining popularity for biomass conversion to fuels and chemicals due the global energy crisis. This study reports a novel catalyst based on noble immobilization zirconia that has successfully used in production of biofuel alkyl levulinates (ALs) from lignocellulosic biomass-derived levulinic acid (LA) under vapor-phase. The wet impregnation...

We have successfully coated a nanofeatured material with ZrO2 and TiO2 using a polymer assisted deposition technique.

This experimental study tackles the question how oxide ceramics (ZrO2 and HfO2) respond to the simultaneous exposure to two extreme conditions, pressures up to several ten GPa and irradiation with highly energetic (MeV-GeV) heavy ion projectiles. The combination of these two extreme conditions influences the materials in ways none of those two conditions alone could. In both materials, the expo...

The reaction mechanisms for diesel soot oxidation over V4/ZrO2 or V4/TiO2 oxide catalysts were studied by the means of in-situ UV-Raman spectroscopy. The results indicate that the formation of surface oxygen complexes (SOC) is a key step and the SOC species mainly exist as carboxyl groups. The presence of NO in the reaction gas stream can promote the formation of SOC species. For soot oxidation...

2014 Absorption measurements performed by means of photoacoustic absorption (PAA)-technique in wedge-shaped TiO2’ Ta2O5, and ZrO2 single-layer films at 03BB = 488 nm, 515 nm, and 647 nm permit a separate determination of bulk and interface absorption, respectively. For TiO2 and Ta2O5 films investigated the filmsubstrate interface absorption Afs dominates over the air-film interface absorption A...