Browsing by Author "Alqaradawi, Siham Y."
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Activation and stabilization of gallium arsenide anode in an aqueous photoelectrochemical cell
Alqaradawi, Siham Y.; Aljaber, Amina S.; Khader, Mahmoud M. ( Elsevier B.V. , 2003 , Article)The formation of a porous layer on the surface of gallium arsenide anode, n-GaAs, increases photogenerated currents significantly. This layer was formed as a result of an anodic polarization of illuminated n-GaAs in acidified ... -
An efficient eco advanced oxidation process for phenol mineralization using a 2D/3D nanocomposite photocatalyst and visible light irradiations
Al-Kandari, H.; Abdullah, A. M.; Ahmad, Yahia H.; Al-Kandari, S.; Alqaradawi, Siham Y.; Mohamed, A.M.... more authors ... less authors ( Nature Publishing Group , 2017 , Article)Nanocomposites (CNTi) with different mass ratios of carbon nitride (C3N4) and TiO2 nanoparticles were prepared hydrothermally. Different characterization techniques were used including X-ray diffraction (XRD), UV-Vis diffuse ... -
On the nature of defect states in tungstate nanoflake arrays as promising photoanodes in solar fuel cells
Mohamed, Aya M.; Amer, Ahmad W.; Alqaradawi, Siham Y.; Allam, Nageh K. ( Royal Society of Chemistry , 2016 , Article)An electrochemical method is presented to study the nature of the defect states in sub-stoichiometric tungsten oxide nanoflake photoanodes used in water splitting. First, stoichiometric/sub-stoichiometric tungstate nanoflake ... -
Self-assembled zirconia nanotube arrays: Fabrication mechanism, energy consideration and optical activity
Amer, Ahmad W.; Mohamed, Seifallah M.; Hafez, Ahmed M.; Alqaradawi, Siham Y.; Aljaber, Amina S.; Allam, Nageh K.... more authors ... less authors ( Royal Society of Chemistry , 2014 , Article)We present a comprehensive roadmap for the precise control of the dimensions and optical properties of anodically fabricated zirconia nanotubes. The effects of anodization time, applied voltage, solvent composition, as ...