Nageh K. Allam
American University in Cairo
NanotechnologyElectrodeX-ray photoelectron spectroscopyInorganic chemistryBand gapChemistryMaterials scienceAnodizingScanning electron microscopeNanotubePhotocurrentSolar cellGrapheneWater splittingRaman spectroscopyChemical engineeringOptoelectronicsElectrochemistrySupercapacitorElectrolyte
257Publications
35H-index
4,886Citations
Publications 257
Newest
#1Manar M. Taha (The: American University in Cairo)H-Index: 2
#2Soha E. Anwar (The: American University in Cairo)
Last. Nageh K. Allam (The: American University in Cairo)H-Index: 35
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Abstract Capacitive deionization (CDI) is a feasible low-cost desalination technique for low-to-medium (brackish) salinity water. However, cycling stability and regeneration of the CDI electrodes are the bottlenecks hindering the practical application of the technology on large scale. Oxidation of the electrodes during the sequential adsorption-desorption processes is one of the most challenging problems hindering their long-term cycling performance. Herein, we demonstrated the ability to design...
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#1Doha M. Sayed (The: American University in Cairo)H-Index: 3
#2Mohamed S. El-Deab (Cairo University)H-Index: 18
Last. Nageh K. Allam (The: American University in Cairo)H-Index: 35
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Abstract Herein, a promising rationally-designed, high surface area multi-walled vanadium oxide nanotubes (VOx NTs) with a large interlayer spacing (6.5A) has been demonstrated as a cathodic dopant for efficient hybrid capacitive deionization (c-HCDI). The VOx NTs enhanced the surface charge of the 3D microporous graphene-like carbon, derived from natural palm tree (CNPT), as verified by Raman profiles and potential of zero charge measurements. The CDI batch-fashion testing has been performed us...
1 CitationsSource
#1Abdelrahman M. Mokhtar (The: American University in Cairo)H-Index: 3
#1Abdelrahman M. Mokhtar (The: American University in Cairo)
Last. Nageh K. Allam (The: American University in Cairo)H-Index: 35
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Abstract Niobium oxides exist in a plethora of metastable, stoichiometric, nonstoichiometric, and mixed phases, rendering the Nb-O systems very complicated and hard to study. These structures significantly differ in their catalytic activity, electrical conductivity, and photoresponse. Herein, we demonstrate the ability to selectively fabricate pure T-Nb2O5 via the addition of small amount of Zr as a phase stabilizer. Moreover, we were able to tune the photoactivity of the material via hydrogen a...
3 CitationsSource
#1Amina A. Saleh (The: American University in Cairo)H-Index: 1
#2Aya Amer (The: American University in Cairo)H-Index: 1
Last. Nageh K. Allam (The: American University in Cairo)H-Index: 35
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Abstract Despite the massive efforts to produce binary metallic phosphides as electrode materials for energy storage purposes, little attempts are devoted to design ternary metallic phosphides, which should perform better than their single and binary counterparts. In this work, we demonstrate the fabrication of 3D flower-like ternary metallic manganese-nickel-cobalt phosphides (MNCPs) with different metal proportions using electrodeposition followed by low-temperature PH3 plasma treatment. Besid...
1 CitationsSource
#1Ayat N. El-Shazly (The: American University in Cairo)H-Index: 8
#2M.A. Hamza (Ain Shams University)H-Index: 6
Last. Nageh K. Allam (The: American University in Cairo)H-Index: 35
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Abstract Herein, we report on the defect engineering of BiPO4 nanorods (NRs) via a facile room-temperature template-free co-precipitation method, followed by hydrogen treatment. The hydrogen treatment temperature determined the type of induced defects in the fabricated BiPO4 NRs and consequently their photocatalytic performance. Upon varying the annealing temperature, the x-ray diffraction (XRD) analysis showed phase transformation and x-ray photoelectron spectroscopy (XPS) analysis revealed var...
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#1Ahmed H. Biby (The: American University in Cairo)H-Index: 3
#2Sarah A. Tolba (The: American University in Cairo)H-Index: 5
Last. Nageh K. Allam (The: American University in Cairo)H-Index: 35
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Abstract The development of efficient photoelectrodes via defect engineering of wide-band gap metal oxides has been the prime focus for many years. Specifically, the effect of carbon defects in wide-band gap metal oxides on their performance in photoelectrochemical (PEC) applications raised numerous controversies and still elusive. Herein, the effect of various carbon defects in m-ZrO2 was investigated using the density functional theory to probe the thermodynamic, electronic, and optical proper...
1 CitationsSource
#1Mahmoud A. Saleh (The: American University in Cairo)H-Index: 1
#2Manar M. Taha (The: American University in Cairo)H-Index: 2
Last. Nageh K. Allam (The: American University in Cairo)H-Index: 35
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Abstract A simple, novel, and highly sensitive electrochemical platform utilizing α-vanadium- manganese oxide (α-MnO2-V2O5) composite nanorods (NRs) was investigated for the electrochemical voltammetric determination of Cilostazol (CTL). The fabricated α-MnO2-V2O5 NRs showed a remarkable enhancement in the anodic oxidation of CTL in comparison to the unmodified bare carbon paste electrode (CPE). The proposed sensor composition and the suggested conditions of the electrochemical measurements were...
1 CitationsSource
#1Loujain G. Ghanem (The: American University in Cairo)H-Index: 1
#2Doha M. Sayed (The: American University in Cairo)H-Index: 3
Last. Nageh K. Allam (The: American University in Cairo)H-Index: 35
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We demonstrate the fabrication of binder-free electrospun nickel-manganese oxides embedded into carbon-shell fibrous electrodes. The morphological and structural properties of the assembled electrode materials were elucidated by high-resolution transmission electron microscopy (HR-TEM), field-emission scanning electron microscopy, and glancing-angle X-ray diffraction. The fibrous structure of the electrodes was retained even after annealing at high temperatures. The X-ray photoelectron spectrosc...
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#1Muhammed S. Abdallah (The: American University in Cairo)H-Index: 3
#2Mohy S. Mansour (The: American University in Cairo)H-Index: 20
Last. Nageh K. Allam (The: American University in Cairo)H-Index: 35
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Abstract Enhancement of biogas combustion characteristics will increase the possibility of the direct utilization of such an eco-friendly fuel in practical combustors. We report a full study of biogas combustion under partially premixed mode to investigate the stability of biogas free-jet flames using a concentric flow slot burner was used to evaluate the biogas combustion characteristics. Five mixtures of biogas ranging from 0%CO2 up to 40%CO2 were investigated to study the effect of CO2 propor...
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#1Basant A. AliH-Index: 8
#2Ahmed H. BibyH-Index: 3
Last. Nageh K. AllamH-Index: 35
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Intercalation of alkali metals has proved to be an effective approach for the enhancement of the energy storage performance in layered-2D materials. However, the research so far has been limited to Li and Na ion intercalation with K ions being recently investigated. Although cesium (Cs) salts are highly soluble in water, Cs+ intercalation has been addressed neither in batteries nor in supercapacitors so far. Herein, we demonstrate the exceptional effect of Cs+ intercalation in MoS2 as a model 2D...
3 CitationsSource