Publications by authors named "Tarek M Salama"
Article Synopsis
- The study focused on creating hybrid magnetic composites of TiO loaded with CoFeO using sol-gel and hydrothermal methods, followed by extensive characterization using various spectroscopic and microscopy techniques.
- Six organic dye pollutants and tetracycline were tested for photocatalytic degradation performance, with the CoFeO/TiO (5% /) composite showing significant efficiency, particularly under UV light.
- The research also explored the degradation mechanism, identifying holes and super oxide radicals as key active species, while highlighting the ease of removing the composites from solutions due to their magnetic properties.
Article Synopsis
- Researchers synthesized WO nanorods and a graphene oxide (GO) doped WO composite using a hydrothermal method and analyzed them with several techniques like XRD and TEM to understand their properties.
- The 1% GO.WO catalyst demonstrated exceptional photocatalytic activity for degrading methylene blue dye, achieving a degradation rate 15 times higher than pure WO due to its unique crystal structure and reduced band gap.
- Additionally, the 1% GO.WO catalyst showed superior gas-sensing ability for ammonia, significantly outperforming pure WO, which is attributed to improved electron transport and reduced recombination rates facilitated by the intercalation of GO.
Effect of mordenite dealumination on the structure of encapsulated molybdenum catalysts.
J Colloid Interface Sci
May 2002
Article Synopsis
- A series of mordenites were treated with acid leaching and then loaded with ammonium heptamolybdate to contain 12 wt% Mo, followed by a range of characterizations like XRD and FTIR.
- The IR analysis revealed specific vibrational bands that indicated the presence and interaction of polymolybdate species with the dealuminated mordenite surfaces, reflecting high dispersion of Mo in the mesopores.
- BET surface area measurements showed that the Mo-loaded samples had larger surface areas compared to those without Mo, and the study also noted changes in spectral features due to dealumination.