Browsing by Author "Al-Qaradawi, Siham"
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Synthesis & Performance Evaluation of Hybrid Cathode Materials for Energy Storage
Moossa, Buzaina; James Abraham, Jeffin; Kahraman, Ramazan; Al Qaradawi, Siham; Abdul Shakoor, Rana ( Qatar University Press , 2021 , Poster)Research into the development of novel cathode materials for energy storage applications is progressing at a rapid rate to meet the ever-growing demands of modern society. Amongst various options, batteries are playing a ... -
Synthesis and performance evaluation of Na(2-x)LixFeP2O7 (x=0, 0.6) hybrid cathodes
Abraham, Jeffin James; Tariq, Hanan; Shakoor, Rana Abdul; Kahraman, Ramazan; Al-Qaradawi, Siham ( John Wiley and Sons Inc , 2020 , Article)This study reports hybrid cathodes formation by cation substitution in which Li+ substitution has been considered for Na+ in the structure of Na(2-x)LixFeP2O7 (x=0, 0.6) to form Na1.4Li0.6FeP2O7 cathodes. Na(2-x)LixFeP2O7 ... -
Synthesis and performance evaluation of nanostructured NaFexCr1-X(SO4)2 cathode materials in sodium ion batteries (SIBs)
Nisar, Umair; Gulied, Mona Hersi; Shakoor, R. A.; Essehli, Rachid; Ahmad, Zubair; Alashraf, Abdullah; Kahraman, Ramazan; Al-Qaradawi, Siham; Soliman, Ahmed... more authors ... less authors ( Royal Society of Chemistry , 2018 , Article)This research work focuses on the synthesis and performance evaluation of NaFexCr1-X(SO4)2 (X = 0, 0.8 and 1.0) cathode materials in sodium ion batteries (SIBs). The novel materials having a primary particle size of around ... -
Synthesis and spectroscopic structural investigations of the charge-transfer complexes formed in the reaction of 2,6-diaminopyridine with π-acceptors TCNE, chloranil, and DDQ
Bazzi, Hassan S.; Mostafa, Adel; AlQaradawi, Siham Y.; Nour, El-Metwally ( Elsevier , 2007 , Article)Molecular charge-transfer complexes of the donor 2,6-diaminopyridine (2,6-DAPY) with π-acceptors tetracyanoethylene (TCNE), 2,3-dichloro-5,6-dicyano-p-benzoquinone (DDQ) and tetrachloro-p-benzoquinone(chloranil) were studied ... -
Synthesis and spectroscopic structural studies of the adducts formed in the reaction of aminopyridines with TCNQ
AlQaradawi, Siham Y.; Nour, E.M. ( Elsevier , 2006 , Article)The adducts 7,7-dicyano-8,8-di-m-aminopyridilequinodimethane and 7,7-dicyano-8,8-di-p-aminopyridilequinodimethane are formed by the reaction of the electron donors 3-aminopyridine (3APY) and 4-aminopyridine (4APY), ... -
Synthesis, characterization and spectroscopic structural studies of charge-transfer complexes of 1,4,8,11-tetraazacyclotetradecane-5,7-dione with iodine, TCNE and DDQ
Nour, El-Metwally; AlQaradawi, Siham Y.; Mostafa, Adel; Shams, Eman; Bazzi, Hassan S. ( Elsevier B.V. , 2010 , Article)Three novel aqueous and solid charge-transfer complexes are synthesized by the reaction of the polynitrogen cyclic n-donor 1,4,8,11-tetraazacyclotetradecane-5,7-dione (TACTDD) with the σ-acceptor iodine, the aliphatic ... -
Synthesis, spectroscopic and thermal investigations of solid charge-transfer complexes of 1,4,7-trimethyl-1,4,7-triazacyclononane and the acceptors iodine, TCNE, TCNQ and chloranil
AlQaradawi, Siham Y.; Bazzi, Hassan S.; Mostafa, Adel; Nour, El-Metwally ( Elsevier , 2008 , Article)The solid charge-transfer complexes formed in the reaction of the electron donor 1,4,7-trimethyl-1,4,7-triazacyclononane (TMTACN) with the acceptors iodine, tetracyanoethylene (TCNE) and 7,7,8,8-tetracyanoquinodimethane ... -
Synthesis, spectroscopic and thermal studies of the reactions of the donors piperazine and N,N′-dimethylpiperazine with σ- and π-acceptors
Bazzi, Hassan S.; AlQaradawi, Siham Y.; Mostafa, Adel; Nour, El-Metwally ( Elsevier , 2008 , Article)Abstract The interactions of the electron donors piperazine (PIP) and N,N′-dimethylpiperazine (DMPIP) with the σ-acceptor iodine and the π-acceptors tetracyanoethylene (TCNE) and 2,3-dichloro-5,6-dicyano-1,4-benzoquinone ... -
TiO2 nanotubes with ultrathin walls for enhanced water splitting
Mohamed, Ahmad M.; Aljaber, Amina S.; AlQaradawi, Siham Y.; Allam, Nageh K. ( Royal Society of Chemistry , 2015 , Article)We demonstrate, for the first time, the synthesis of titania nanotubes with ultrathin (3–5 nm) wall thickness. As revealed by the incident photon-to-current collection efficiency (IPCE) and electrochemical impedance ... -
UV–Vis, IR spectra, mass spectrometry and thermal studies of charge transfer complexes formed in the reaction of 1, 4, 8, 11-tetraazacyclotetradecane with π-electron acceptors
Mostafa, Adel; Madrahimov, Sherzod; Fadlallah, Joelle; AlQaradawi, Siham Y. ( Elsevier B.V. , 2019 , Article)The solid charge-transfer (CT) molecular complexes formed in the reaction of the electron donor 1,4,8,11-tetraazacyclotetradecane (TACTD) with the π-electron acceptors 2,4,6-tetrafluoro-1,4-benzoquinone (TFQ), 2,3-dichlo ...