Ahmed S. Etman
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View article: On the Electrochemical Performance and Capacity Losses Seen for LiFePO<sub>4</sub> Electrodes in Carbonate Electrolytes at Potentials up to 5.0 V versus Li<sup>+</sup>/Li
On the Electrochemical Performance and Capacity Losses Seen for LiFePO<sub>4</sub> Electrodes in Carbonate Electrolytes at Potentials up to 5.0 V versus Li<sup>+</sup>/Li Open
Lithium iron phosphate (LFP) is widely considered as a low‐potential positive electrode material. Herein, the high‐voltage stability and capacity retention of LFP composite electrodes are investigated at potentials up to 5.0 V (versus Li +…
View article: Prevalence and predictors of molar-incisor hypomineralization among Egyptian children: a cross-sectional study
Prevalence and predictors of molar-incisor hypomineralization among Egyptian children: a cross-sectional study Open
Purpose: The primary aim of this study was twofold: first, to assess the prevalence of molar incisor hypomineralization (MIH) within a cohort of Egyptian children and, second, to investigate the potential correlation between MIH and variou…
View article: Anodic dissolution of aluminum in non-aqueous electrolyte solutions for sodium-ion batteries
Anodic dissolution of aluminum in non-aqueous electrolyte solutions for sodium-ion batteries Open
The respective impact of the electrolyte and solvent, during anodic dissolution or passivation of aluminum was investigated in electrolyte solutions developed for sodium-ion batteries.
View article: Success of pulpectomy in primary molars using a modified obturating materials (a comparative study between Metapex and Endoflas)
Success of pulpectomy in primary molars using a modified obturating materials (a comparative study between Metapex and Endoflas) Open
Metapex a material used widely today in pulpectomy treatment of deciduous teeth.A comparison between Metapex and Endoflas as root canal obturating material was presented.Sixty children with age range from four to seven years were participa…
View article: Computationally Driven Discovery of Quaternary Tantalum-Based MAB-Phases: Ta<sub>4</sub>M″SiB<sub>2</sub> (M″ = V, Cr, or Mo): Synthesis, Characterization, and Elastic Properties
Computationally Driven Discovery of Quaternary Tantalum-Based MAB-Phases: Ta<sub>4</sub>M″SiB<sub>2</sub> (M″ = V, Cr, or Mo): Synthesis, Characterization, and Elastic Properties Open
Out-of-plane chemically ordered transitionmetal boride(o-MAB) phases, Ta4M & DPRIME;SiB2 (M & DPRIME; = V, Cr), and a structurally equivalent disordered solidsolution MAB phase, Ta4MoSiB2, are synthesized.DFT calculations are used …
View article: Electrochemistry SQLite database
Electrochemistry SQLite database Open
An SQLite database containing electrochemical results. The relevant metadata for each experiment is included.
View article: X-ray Photoelectron Spectroscopy data
X-ray Photoelectron Spectroscopy data Open
X-ray Photoelectron Spectroscopy data contained in an excel file. Each page contains one spectrum each, which is accompanied by the meta-data for the specific measurement. The preceding measurements can be found in the SQLite database unde…
View article: Revascularization Procedures in nonvital Immature Permanent Teeth a Comparative Study
Revascularization Procedures in nonvital Immature Permanent Teeth a Comparative Study Open
Induction of root growth in nonvital immature permanent teeth with revascularization procedures evaluated using triantibiotic paste or Calcium hydroxide paste as a disinfectant intracanal medicament.The coronal seal using Mineral trioxide …
View article: Exploring the electrochemical behavior of Mo1.33CTz MXene in aqueous sulfates electrolytes: Effect of intercalating cations on the stored charge
Exploring the electrochemical behavior of Mo1.33CTz MXene in aqueous sulfates electrolytes: Effect of intercalating cations on the stored charge Open
MXenes have been introduced as a high energy and power density electrochemical supercapacitor material owing to their high specific capacitance and electrochemical stability. The operating potential window and, in turn, energy density of M…
View article: Ti1.1V0.7Cr Nb1.0Ta0.6C3T high-entropy MXene freestanding films for charge storage applications
Ti1.1V0.7Cr Nb1.0Ta0.6C3T high-entropy MXene freestanding films for charge storage applications Open
High-entropy (HE) MXenes are a new emerging class of materials with unique properties, diverse compositions, and potential uses in energy storage devices. Herein, high-entropy MXene, Ti1.1V0.7CrxNb1.0Ta0.6C3Tz (Tz = –F, –O, –OH), freestand…
View article: Mixed MXenes: Mo1.33CTz and Ti3C2Tz freestanding composite films for energy storage
Mixed MXenes: Mo1.33CTz and Ti3C2Tz freestanding composite films for energy storage Open
MXenes are a class of 2D materials with outstanding properties, including high electronic conductivity, hydrophilicity, and high specific capacitance. In particular, Mo1.33CTz MXene has a high specific capacitance, whereas films of Ti3C2Tz…
View article: A Suggested Blending Routing for Iron Ore from El-Gedida Mines.(Dept.M)
A Suggested Blending Routing for Iron Ore from El-Gedida Mines.(Dept.M) Open
The Iron ore deposits of El-Bahariya Oasis at El-Gedida are the only ores used by the Iron and steel Company ( Hadisolb ). These ores are located in three different regions with different contents and quantities : Platau (39.6 mt., 58.2 % …
View article: Flexible Free‐Standing MoO<sub>3</sub>/Ti<sub>3</sub>C<sub>2</sub>T<i><sub>z</sub></i> MXene Composite Films with High Gravimetric and Volumetric Capacities
Flexible Free‐Standing MoO<sub>3</sub>/Ti<sub>3</sub>C<sub>2</sub>T<i><sub>z</sub></i> MXene Composite Films with High Gravimetric and Volumetric Capacities Open
Enhancing both the energy storage and power capabilities of electrochemical capacitors remains a challenge. Herein, Ti 3 C 2 T z MXene is mixed with MoO 3 nanobelts in various mass ratios and the mixture is used to vacuum filter binder fre…
View article: Fabrication of Mo<sub>1.33</sub>CT<sub>z</sub>(MXene)–cellulose freestanding electrodes for supercapacitor applications
Fabrication of Mo<sub>1.33</sub>CT<sub>z</sub>(MXene)–cellulose freestanding electrodes for supercapacitor applications Open
Simple, fast, and robust approach to fabricate Mo1.33CTz–cellulose electrodes with high capacitances (440 F g−1, 1178 F cm−3, 1.4 F cm−2). The method enables the use of high mass loading electrodes (∼26 μm-thick).
View article: Tailored synthesis approach of (Mo<sub>2/3</sub>Y<sub>1/3</sub>)<sub>2</sub>AlC <i>i</i>-MAX and its two-dimensional derivative Mo<sub>1.33</sub>CT<sub>z</sub> MXene: enhancing the yield, quality, and performance in supercapacitor applications
Tailored synthesis approach of (Mo<sub>2/3</sub>Y<sub>1/3</sub>)<sub>2</sub>AlC <i>i</i>-MAX and its two-dimensional derivative Mo<sub>1.33</sub>CT<sub>z</sub> MXene: enhancing the yield, quality, and performance in supercapacitor applications Open
Tailored synthesis method is used to produce higher yield of (Mo2/3Y1/3)2AlC i-MAX, for realization of 2D Mo1.33CTz MXene with ordered vacancies, the latter shows electrochemical performance equivalent to that produced from the Sc containi…
View article: On the Capacities of Freestanding Vanadium Pentoxide–Carbon Nanotube–Nanocellulose Paper Electrodes for Charge Storage Applications
On the Capacities of Freestanding Vanadium Pentoxide–Carbon Nanotube–Nanocellulose Paper Electrodes for Charge Storage Applications Open
Herein, a one‐step protocol for synthesizing freestanding 20 μm thick cellulose paper electrodes composed of V 2 O 5 ⋅ H 2 O nanosheets (VOx), carbon nanotubes (CNTs), and Cladophora cellulose (CC) is reported. In 1.0 m Na 2 SO 4 , the VO …
View article: Acetonitrile‐Based Electrolytes for Rechargeable Zinc Batteries
Acetonitrile‐Based Electrolytes for Rechargeable Zinc Batteries Open
Herein, Zn plating–stripping onto metallic Zn using a couple of acetonitrile (AN)‐based electrolytes (0.5 m Zn(TFSI) 2 /AN and 0.5 m Zn(CF 3 SO 3 ) 2 /AN) is studied. Both electrolytes show a reversible Zn plating/stripping over 1000 cycle…
View article: Pressure-induced semiconductor-to-metal phase transition of a charge-ordered indium halide perovskite
Pressure-induced semiconductor-to-metal phase transition of a charge-ordered indium halide perovskite Open
Phase transitions in halide perovskites triggered by external stimuli generate significantly different material properties, providing a great opportunity for broad applications. Here, we demonstrate an In-based, charge-ordered (In + /In 3+…
View article: Flexible Freestanding MoO<sub>3−<i>x</i></sub>–Carbon Nanotubes–Nanocellulose Paper Electrodes for Charge‐Storage Applications
Flexible Freestanding MoO<sub>3−<i>x</i></sub>–Carbon Nanotubes–Nanocellulose Paper Electrodes for Charge‐Storage Applications Open
Herein, a one‐step synthesis protocol was developed for synthesizing freestanding/flexible paper electrodes composed of nanostructured molybdenum oxide (MoO 3− x ) embedded in a carbon nanotube (CNT) and Cladophora cellulose (CC) matrix. T…
View article: Insights into the Exfoliation Process of V<sub>2</sub>O<sub>5</sub>·<i>n</i>H<sub>2</sub>O Nanosheet Formation Using Real-Time <sup>51</sup>V NMR
Insights into the Exfoliation Process of V<sub>2</sub>O<sub>5</sub>·<i>n</i>H<sub>2</sub>O Nanosheet Formation Using Real-Time <sup>51</sup>V NMR Open
Nanostructured hydrated vanadium oxides (V2O5·nH2O) are actively being researched for applications in energy storage, catalysis, and gas sensors. Recently, a one-step exfoliation technique for fabricating V2O5·nH2O nanosheets in aqueous me…
View article: Aqueous Exfoliation of Transition Metal Oxides for Energy Storage and Photocatalysis Applications : Vanadium Oxide and Molybdenum Oxide Nanosheets
Aqueous Exfoliation of Transition Metal Oxides for Energy Storage and Photocatalysis Applications : Vanadium Oxide and Molybdenum Oxide Nanosheets Open
Two-dimensional (2D) transition metal oxides (TMOs) are a category of materials which have unique physical and chemical properties compared to their bulk counterparts. However, the synthesis of 2D TMOs commonly includes the use of environm…
View article: A heavy metal-free CuInS<sub>2</sub> quantum dot sensitized NiO photocathode with a Re molecular catalyst for photoelectrochemical CO<sub>2</sub> reduction
A heavy metal-free CuInS<sub>2</sub> quantum dot sensitized NiO photocathode with a Re molecular catalyst for photoelectrochemical CO<sub>2</sub> reduction Open
Heavy metal-free CuInS2 QDs as a photosensitizer and a Re molecular catalyst have been successfully employed to co-sensitize a NiO photocathode for CO2 reduction into CO.
View article: Facile Water-Based Strategy for Synthesizing MoO<sub>3–<i>x</i></sub> Nanosheets: Efficient Visible Light Photocatalysts for Dye Degradation
Facile Water-Based Strategy for Synthesizing MoO<sub>3–<i>x</i></sub> Nanosheets: Efficient Visible Light Photocatalysts for Dye Degradation Open
Nanostructured molybdenum oxides are promising materials for energy storage, catalysis, and electronic-based applications. Herein, we report the synthesis of MoO3-x nanosheets (x stands for oxygen vacancy) via an environmentally friendly l…