Amin El-Meligi

National Research Centre, Egypt

Nanotechnology has revolutionized many fields and applications, such as medical diagnosis and treatment, water purification, and environmental protection. There is an art behind the synthesis of nanomaterials and their use in our daily lives. The Art of Nanomaterials takes the reader on a fascinating historical journey to learn how artistic inventi...

Nanotechnology has revolutionized many fields and applications, such as medical diagnosis and treatment, water purification, and environmental protection. There is an art behind the synthesis of nanomaterials and their use in our daily lives. The Art of Nanomaterials takes the reader on a fascinating historical journey to learn how artistic inventi...

Nanotechnology has revolutionized many fields and applications, such as medical diagnosis and treatment, water purification, and environmental protection. There is an art behind the synthesis of nanomaterials and their use in our daily lives. The Art of Nanomaterials takes the reader on a fascinating historical journey to learn how artistic inventi...

Nanotechnology has revolutionized many fields and applications, such as medical diagnosis and treatment, water purification, and environmental protection. There is an art behind the synthesis of nanomaterials and their use in our daily lives. The Art of Nanomaterials takes the reader on a fascinating historical journey to learn how artistic inventi...

Nanotechnology has revolutionized many fields and applications, such as medical diagnosis and treatment, water purification, and environmental protection. There is an art behind the synthesis of nanomaterials and their use in our daily lives. The Art of Nanomaterials takes the reader on a fascinating historical journey to learn how artistic inventi...

Nanotechnology has revolutionized many fields and applications, such as medical diagnosis and treatment, water purification, and environmental protection. There is an art behind the synthesis of nanomaterials and their use in our daily lives. The Art of Nanomaterials takes the reader on a fascinating historical journey to learn how artistic inventi...

Nanotechnology has revolutionized many fields and applications, such as medical diagnosis and treatment, water purification, and environmental protection. There is an art behind the synthesis of nanomaterials and their use in our daily lives. The Art of Nanomaterials takes the reader on a fascinating historical journey to learn how artistic inventi...

There is a significant effect of carbon dioxide on the acidification of the ocean. This research focuses on the acidification of the ocean and its effect on the animal life in the ocean. Also, it focuses on the effect of carbon dioxide concentration in the atmosphere on the ocean acidification. The data are collected from the research institutions...

Background This research aims to follow the concentration of carbon dioxide (CO2) in the atmosphere and the effect of zero-emission on the ecosystem. CO2 is the most important of the green house gases. Nowadays, the earth is suffering from global warming due to greenhouse gases. The call all over the world is to reduce the emission of the greenhous...

Manganese phosphorous trisulphide, MnPS3, is a solid layered material. The hydrogen gravimetric storage capacities of MnPS3 powder at 80.15, 173.15 and 298.15 K and at moderate pressures has been recently measured in experiments. The origin of the storage capacities of this material is not well understood. The main hypothesis is that hydrogen is st...

Background: Hydrogen energy is a solution for the energy crisis. As it is known, the result of hydrogen combustion is water vapor. This means that there is no pollution. Objective: This study investigates hydrogen production of pure aluminum (Al) and aluminum -silicon alloy (Al-Si). The investigation has been processed in the presence of 10% and 15...

Background: Rare earth elements (Re), nickel and oxygen could form a series of compounds with the general formula Ren+1NinO3n+1 whose structures are described by stacking along the c-axis of n finite LaNiO3 pervoskite layers separated by ReO rock salt like layers. Objective: This study aims at synthesing Y4Ni3O10 (YNO) by ball milling and annealing...

Single crystal sheet of layered material, FePS 3 , grows inside sealed and evacuated silica tube. The FePS 3 forms at 650°C under a controlled heating rate. X-ray diffraction (XRD), Scanning electron microscope (SEM) and transmission electron microscope (TEM) have been used to study the crystal structure and morphology. The XRD pattern exhibits sha...

This study invistigates the effect of global warming on the ice caps melting of poles. The research procedures rely on information, reports and data about the polar ice caps melting from the professional organization and institution, such as National Geographic (NG), National Snow and Ice Data Center (NSIDC), and Japan Aerospace Exploration Agency...

SUMMARY Crednerite glass-ceramic material (CuMnO2) has been investigated for the first time as a hydrogen storage candidate. The average gravimetric capacity is about 16 g H2/kg and about 50 g H2/kg of CuMnO2 at 473 and 573 K respectively under a pressure up to 20 bars. The hydrogen adsorbed capacity (weight percent) of CuMnO2 increased with increa...

Prepared CoPS and NiPS3 are studied as new materials for hydrogen energy storage. Single phase of CoPS and NiPS3 were grown separately in evacuated silicatube via solid state reaction at 650 degrees C with controlled heating rate 1 degrees C/min. X-ray diffraction patterns confirm the formation of the desired compounds. Both CoPS and NiPS3 exhibite...

The present research work investigated the corrosion behaviour of casted pure aluminium metal and aluminium-copper alloy after running weight loss tests in different concentration ratios of H2SO4 media at RT and 50°C, respectively. Corrosion penetration rate was determined within interval immersion periods of 5 hours. At RT, it was observed that pu...

Applications Hydrogen is an ideal energy carrier with dual benefits, being clean for environment and being renewable. The Hydrogen Energy is the key issues and actions that are crucial to achieve a changeover to hydrogen energy applications as it relates to stationary and on-board applications.Hydrogen storage is most challenge to make the applicat...

X-ray diffraction (XRD) pattern exhibits sharp 001 reflections of the MgPS<sub align="right"> 3 </sub> layered material with interlayer gap (d-spacing) of 6.4 Å. Scanning electron microscope (SEM) shows a pattern of conglomerates of layers quite uniform in size, around 100-200 nm. TEM images show homogeneous distribution of nanoparticles of about 6...

This study reports on the systematic assessment of hydrogen (H2) production by corrosion of aluminum alloy (AA) in hydrochloric acid (HCl) at different temperature. Rare earth inhibitors, lanthanum (La) and cerium (Ce) have been applied to control the H2 production process. The production process is based on electrochemical reaction of aluminum (an...

Iron phosphorus trisulfide FePS3 is related to the chalcogenides. It is characterized by layered structure. FePS3 powder was prepared by solid state reaction and heated up to 650 °C using two different heating rates 1 °C/min and 40 °C/min. The results showed that the FePS3 produced with slow heating rate was highly ordered single crystalline phase...

The crystalline semiconductor material (MnPS3) has interlayer d-spacing gap of 6.4 Å. The main advantage of this gap is the ability to accommodate organic and inorganic compounds. Pyridine was intercalated in the MnPS3 interlayer gap under specific conditions. Four phases (d-spacing = 12.48 Å, 10.8 Å, 9.7 Å and 7.3 Å) were observed and the correspo...

Single phase MnPS3 powder was prepared by solid state reaction between Mn, S and P carried out at 650°C in evacuated silica tube. The structure, morphology and sorption characteristics of the prepared solid were investigated. The results revealed that the obtained MnPS3 compound was capable of adsorbing 3.5wt% hydrogen at −193°C and a pressure of 3...

A clean route for oxide scale grown on low carbon steel alloy surface at 650°C under controlled heating rate and oxidation period, was investigated. It was found that using controlled conditions of a certain heating rate and an oxidation time led to remarkable changes in the formation of the oxide scale phases and the crystallites size. X-ray diffr...

Intercalated compound of pyridine into layered MnPS3 has been synthesized and characterized by X-ray powder diffraction (XRD), Infrared (IR) and Scanning Electron Microscopy connected with chemical analysis (SEM-EDEX). It is found that leaving the intercalated compound in open atmosphere for a number of days influences the existing phase and the ar...

Amorphous materials of Zr–Cu–Ni–Al systems have shown attractive electrochemical hydrogen absorption properties. A comparison between Zr60Cu15Al10Ni10Pd5 and Zr65Cu17.5Al7.5Ni10 reveals that the palladium (Pd) increases the hydrogen absorption capacity. Charging melt-spun Zr60Cu15Al10Ni10Pd5 ribbons electrochemically to different hydrogen-to-metal...

The intercalation of organic guests, 2-methyl pyridine (2-picoline) and 3-methyl pyridine (3-picoline) into semiconductor layered nanomaterial (MnPS 3) was investigated. New conditions were applied. New phases appeared and lattice expansions were 0.36 nm for 2-picoline intercalation and 0.728 nm for 3-picoline inter-calation. The XRD (X-ray diffrac...

The hydrogen evolution reaction (HER) (cathodic reaction) of low carbon steel electrode immersed in hydrochloric acid was investigated as a source for hydrogen production. Corrosion rate, hydrogen evolution rate, and current density increase with the increase of HCl concentration. Theoretically and practically, every 1g of iron produces about 0.036...

Semiconductor nanomaterials (FePS<sub align="right">3</sub> and MnPS<sub align="right">3</sub>) were intercalated with organic compounds, N,N'-dimethyl-4,4'-bipyridinium (DBP) and pyridinium cations. The resultant compounds have been characterised by X-ray diffraction (XRD). Insertion of the DBP expands lattice spacing by 3.4Å with respect to FePS<...

The intercalation of 4-methyl pyridine (4-picoline) into layered semiconductive material (MnPS 3) and the sta-bility of the resulting materials in corrosive environments (water, HCl and open atmosphere) were investigated. Powder X-ray diffraction (XRD) indicated that the presence of water and hydrochloric acid greatly influenced the existing form o...

Al-alloy (AA5022) corrosion penetration (CP) and crystal structure were investigated after running static immersion corrosion tests in 1 mol/L HCI solution and different concentrations of rare earth elements (La3+), (Ce3+) and their combination, at different temperatures. X-ray diffraction (XRD) was used to examine the surface structure before and...

Synthesising and characterizing of the FePS3 layered compound and its intercalation with pyridinium ion (pyH+) were studied. Well-crystallized material of FePS3 was formed. Full insertion of pyH+ was assured by X-ray diffraction (XRD) measurements. Two phases were produced due to intercalation, phase A (d = 12.1 Å) and phase B (d = 9.7 Å). There is...

Oxide scale formation on a C-steel surface has been investigated using linear heating rates ranging from 0.1°C/min to 10°C/min at high temperatures. The studies on the oxide scale formation at high temperature (650°C) at slower heating rate (0.1°C/min) shows that the kinetic regime is linear. X-ray diffraction measurements revealed that the scale c...

The effect of hydrochloric acid on the dissolution and crystal structure of hematite has been studied under various experimental conditions. The effect of temperature, acid concentration, stirring time and organic inhibitors on the dissolution was studied using X-ray diffraction, and infrared spectroscopy. Statistics is used to set the correlation...

This work investigates synthesizing of MnPS3 layered compound and its intercalation with pyridinium ion (PyH+). The XRD results indicate that there are four phases due to intercalation with different d-spacing, d=9.7, 10.6, 7.3 and 12.3Å. These phases are related to the guest positions in the interlayer of the P2S64−, except the d=7.3Å phase. There...

Potentiodynamic polarisation, potential-time measurements, X-ray diffraction (XRD) and infrared spectroscopy (IR) were used to investigate the effect of different concentrations of Na2SO4 in the absence and presence of NaCl on the corrosion of Cu-alloy. The electrochemical measurements showed that the increase of Na2SO4 concentration led to increas...

The effect of cooling liquid used for heat exchangers on the Cu alloy corrosion products has been examined using potential-time measurements under applied current condition (anodizing), potentiodynamic polarization, X-ray diffraction (XRD) and infrared spectroscopy (IR). The corrosion products formed on the Cu alloy surface during anodizing are Cu2...

The effect of organic corrosion inhibitors indole (A), indole acetic acid (B), indole butyric acid (C) and 3-acetyl indole, upon the rate of dissolution of magnetite (Fe3O4) in 10% hydrochloric acid solution has been studied by using spectrophotometric analysis (SPM) and infrared spectroscopy (IR). Mechanical stirring was operated at different temp...

The Inhibiting effect of indole (A), indole acetic acid (B), indole buteric acid (C), and 3-acetyl indole (D), on the corrosion of three carbon steels in 10% HCl was investigated by using galvanostatic polarization method and open circuit potential measurements. It was observed that the inhibiting action of inhibitors increased with increasing inhi...

The corrosion of three types of C-steel in 10% hydrochloric acid solution has been investigated in the absence and the presence of the inhibitors, indole (A), indole acetic acid (B), indole butyric acid (C), and 3-acetyl indole (D), by weight-loss measurements at different temperatures (30-70°C). The results showed that inhibiting efficiency depend...

The effect of certain heterocyclic organic inhibitors (indole, indole acetic acid, indole butyric acid, and 3-acetyl indole) on scale dissolution during the pickling of mild steel in 10%HCl has been investigated by means of corrosion potential measurements and scanning electron microscopy (SEM). The results have shown that indole and 3-acetyl indol...

It is important to protect the environment by decreasing and controlling all causes, which damage and pollute the society, and affect the economy. Different hazards such as industrial pollution, transportation accidents and damage, radioactive pollution, water pollution, petroleum pollution…etc) occurs all the time. Corrosion is considered one of t...