Browsing by Author "Al-Qaradawi S.Y."
Now showing items 1-13 of 13
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Bimetallic palladium-supported halloysite nanotubes for low temperature CO oxidation: Experimental and DFT insights
Ahmad Y.H.; Mohamed A.T.; Hassan W.M.I.; Soliman A.; Mahmoud K.A.; Aljaber A.S.; Al-Qaradawi S.Y.... more authors ... less authors ( Elsevier B.V. , 2019 , Article)The design and fabrication of novel metal-supported catalysts for energy conversion and heterogeneous catalysis is a pivotal theme. Herein, we present the synthesis of bimetallic palladium nanoalloys supported on halloysite ... -
Cu-Ce-O catalyst revisited for exceptional activity at low temperature CO oxidation reaction
Zedan A.F.; Polychronopoulou K.; Asif A.; AlQaradawi S.Y.; AlJaber A.S. ( Elsevier B.V. , 2018 , Article)In the present study, CexCu1−xO2−δ (x = 0, 0.3, 0.5, 0.8, 0.9, and 1) catalysts were synthesized using a facile and reproducible combustion method and were evaluated towards the CO oxidation (CO-OX) and CO preferential ... -
Enhanced photocatalytic performance of WON@porous TiO2 nanofibers towards sunlight-assisted degradation of organic contaminants
Ahmad Y.H.; Mohamed A.T.; Sliem M.H.; Abdullah A.M.; Al-Qaradawi S.Y. ( Royal Society of Chemistry , 2018 , Article)In the last few decades, TiO2 has been widely used in different types of photocatalytic applications. However, the relatively large optical band gap (∼3.2 eV), low charge carrier mobility and consequently its low quantum ... -
Impact of CNTs' treatment, length and weight fraction on ordinary concrete mechanical properties
Ahmad Y.H.; El-Sayed H.A.; Mohamed A.T.; Aljaber A.S.; Al-Qaradawi S.Y.This study investigates the effect of the treatment, length and weight fraction parameters of multi-wall carbon nanotubes (MWCNT) on the mechanical properties of concrete. Mixes with various CNTs’ amounts ranging between ... -
Investigations into structure-property relationships of novel Ru(II) dyes with N,N?-Diethyl group in ancillary ligand for dye-sensitized solar cells
Ashraf S.; Su R.; Akhtar J.; Siddiqi H.M.; Shuja A.; Al-Saad K.A.; Al-Qaradawi S.Y.; El-Shafei A.... more authors ... less authors ( Elsevier Ltd , 2019 , Article)Structure-property relationships of four novel bipyridyl Ru(II) complexes, denoted as SD-22, SD-24, SD-26 and SD-28, are reported herein. The molecular structures of all four photosensitizers were confirmed using FT-IR, ... -
Precise fabrication of porous one-dimensional gC3N4 nanotubes doped with Pd and Cu atoms for efficient CO oxidation and CO2 reduction
Eid K.; Sliem M.H.; Jlassi K.; Eldesoky A.S.; Abdo G.G.; Al-Qaradawi S.Y.; Sharaf M.A.; Abdullah A.M.; Elzatahry A.A.... more authors ... less authors ( Elsevier B.V. , 2019 , Article)Rational design of graphitic carbon nitride nanostructures (gC3N4) is vital for various catalytic applications. Herein, we synthesized porous gC3N4 nanotubes (gC3N4NTs) doped with Pd and Cu (Pd/Cu/gC3N4NTs) via the consecutive ... -
Rational one-pot synthesis of ternary PtIrCu nanocrystals as robust electrocatalyst for methanol oxidation reaction
Ahmad Y.H.; El-Sayed H.A.; Mohamed A.T.; Aljaber A.S.; Al-Qaradawi S.Y. ( Elsevier B.V. , 2020 , Article)Development of self-assembled nanoarchitectures of tailored morphology and composition for diversified applications have received great interest in the last decades. Pt-based nanocrystals (NCs) exhibited enhanced catalytic ... -
Rational synthesis of ternary PtIrNi nanocrystals with enhanced poisoning tolerance for electrochemical ethanol oxidation
Ahmad Y.H.; Mohamed A.T.; Youssef K.M.; Kundu S.; Mkhoyan K.A.; Al-Qaradawi S.Y.... more authors ... less authors ( Elsevier Inc. , 2019 , Article)The development of highly efficient and durable anode materials for ethanol electro-oxidation remains a challenge. Herein, we report the synthesis of Pt1−x−yIrxNiy nanocrystals via one-step procedure by ultrasonic-assisted ... -
Synthesis, structural and lithium storage studies of graphene-LiVSi 2 O 6 composites
Hameed A.S.; Reddy M.V.; AlQaradawi S.Y.; Adams S. ( Institute for Ionics , 2019 , Article)Clinopyroxene LiVSi2O6 phase has been synthesised in this study by a single step solid state reaction in argon atmosphere at 900 °C, and its electrochemical properties have been investigated. Graphene composite of the ... -
The effect of N-heterocyclic carbene units on the absorption spectra of Fe(ii) complexes: A challenge for theory
Ahmad Y.H.; El-Sayed H.A.; Mohamed A.T.; Aljaber A.S.; Al-Qaradawi S.Y.The absorption spectra of five Fe(II) homoleptic and heteroleptic complexes containing strong sigma-donating N-heterocyclic carbene (NHC) and polypyridyl ligands have been theoretically characterized using a tuned ... -
Three-component one-pot reaction for molecular engineering of novel cost-effective highly rigid quinoxaline-based photosensitizers for highly efficient DSSCs application: Remarkable photovoltage
Lyu L.; Su R.; Al-Qaradawi S.Y.; Al-Saad K.A.; El-Shafei A. ( Elsevier Ltd , 2019 , Article)A simple three-component one-pot approach was developed to generate three novel highly rigid quinoxaline-based dyes, which were further investigated as sensitizers of dye-sensitized solar cells (DSSCs). The effect of ... -
Understanding the Origin of the Ultrahigh Rate Performance of a SiO2-Modified LiNi0.5Mn1.5O4 Cathode for Lithium-Ion Batteries
Nisar U.; Al-Hail S.A.J.A.; Petla R.K.; Shakoor R.A.; Essehli R.; Kahraman R.; AlQaradawi S.Y.; Kim D.K.; Belharouak I.; Amin M.R.... more authors ... less authors ( American Chemical Society , 2019 , Article)LiNi0.5Mn1.5O4 (LNMO) is one of the most promising cathode materials for next-generation lithium-ion batteries for rapid charging–discharging applications. The surfaces of LNMO samples are coated with different amounts ... -
Versatile synthesis of Pd and Cu Co-doped porous carbon nitride nanowires for catalytic CO oxidation reaction
Eid, Kamel; Ahmad, Yahia H.; Mohamed, Assem T.; Elsafy, Anas G.; Al-Qaradawi, Siham Y. ( MDPI AG , 2018 , Article)Developing efficient catalyst for CO oxidation at low-temperature is crucial in various industrial and environmental remediation applications. Herein, we present a versatile approach for controlled synthesis of carbon ...