The effects of dopant content and calcination temperature on Mn-doped TiO2-ZrO2 structure properties were successfully investigated. Composite titania-zirconia was synthesized by sol-gel method. Titanium(IV) isopropoxide used as the precursor TiO2, while zirconiapowder another semiconductor. MnCl2∙4H2O source in this study. Various amounts manganese incorporated into performed at temperatures 5...

To evaluate the effect of beverages (coffee, tea, Cola-Cola, and mineral water) on color stability resin-based composite (RBC) materials modified with different nanoparticles (NPs). The specimens (70/beverage) were fabricated from light-cured RBCs divided according to NPs into four groups: one control, unmodified (N0); three experimental—ZrO2 (Zr), TiO2 (Ti), SiO2 (Si) groups. Each experimental...

Integrated CO2 capture and utilisation (ICCU) is a promising strategy for restricting carbon emissions achieving neutrality. Bifunctional combined materials (BCMs), containing adsorbents active catalysts, are widely applied in this process. Producing syngas via reverse water–gas shift reaction (RWGS) integrating with Fischer-Tropsch (F-T) synthesis an attractive valuable route. This work invest...

A novel silica catalyst was synthesized by evaporation-induced self-assembly (EISA) method and tested for the catalytic selective hydrolysis of cellulose to glucose. This silica catalyst exhibited a higher catalytic activity than other oxides prepared by the same method, such as ZrO2, TiO2, and Al2O3. Using silica as a catalyst, cellulose was selectively hydrolyzed into glucose with a glucose y...

The electronic properties of three porphyrin-bridge-anchor photosensitizers are reported with (1a, 1e, 3a and 3e) or without (2a and 2e) an intramolecular dipole in the bridge. The presence and orientation of the bridge dipole is hypothesized to influence the photovoltaic properties due to variations in the intrinsic dipole at the semiconductor-molecule interface. Electrochemical studies of the...

Catalytic oxidation/degradation of phenol with molecular oxygen in aqueous medium by Zirconia, zirconia supported metals and metal oxides at low temperature were studied in a three necked batch reactor. The catalysts prepared were characterized by modern techniques like XRD, SEM and EDX. The activities of different catalysts for the oxidation of phenol in aqueous medium were found to be in the ...

A method of wet chemical synthesis suitable for high throughput and combinatorial applications has been developed for the synthesis of porous resistive thickfilm gas sensors. This method is based on the robot-controlled application of unstable metal oxide suspensions on an array of 64 inter-digital electrodes positioned on an Al2O3 substrate. SnO2, WO3, ZrO2, TiO2, CeO2, In2O3 and Bi2O3 were ch...