Luma M. Ahmed

University of Kerbala · Department of chemistry

Titania modified nanoparticles have been prepared by the photodeposition method employing platinum particles on the commercially available titanium dioxide (Hombikat UV 100). The properties of the prepared photocatalysts were investigated by means of the Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), atomic force microscop...

This manuscript is interested with the using Chlorazol black BH dye as a model compound. This photo reaction was obeyed first-order kinetics with low activation energy equal to27.135 kJ/mol. Moreover, the thermodynamic parameters were calculated using the Arrhenius equation, the Eyring-Polanyi equation and the Gibbs equation, then proved this photo...

The synthesis of nanostructure of dopamine (D) and phosphotungstic acid (PWA) loaded with methtrexate (MTX) via self-assembly of the organic–inorganic hybrid D and PWA is described. The amount of MTX drug loaded in nanostructure of PWA-D was determined using UV/Vis spectroscopy and found to be about 3% (by weight). The as-prepared rice-like nanostr...

The adsorptive removal and photocatalytic decolorization of Direct Orange 39 dye were investigated using ZnO as an adsorbent and a photocatalyst. The adsorption and decolorization experiments were performed in the dark and under UV light, respectively. The maximum adsorption capacity and removal percentage (Eremoval%) were investigated in the dark...

The adsorptive removal and photocatalytic decolorization of Direct Orange 39 dye were investigated using ZnO as an adsorbent and a photocatalyst. The adsorption and decolorization experiments were performed in the dark and under UV light, respectively. The maximum adsorption capacity and removal percentage (Eremoval%) were investigated in the dark...

Preparation,characterization of ZnS/CdS nanoparticle and decolourization Congo red dye by it

Hydrogen gas is considered to be a key fuel of the cleanest energy for the future. It is projected to resolve the local problems related to the air quality that was created by the automobile industries. The combustion of hydrogen gas is without emission of any carbon oxides, producing only water. It is of considerable importance from an environment...

How to cite this article Zaid A A., Ahmed L M., Mohammad R K. Solvothermal-Assisted Normal Spinel Zinc ferrite (ZnFe 2 O 4 or ZnO.Fe 2 O 3) nanoparticle has been synthesized as a dark reddish brown powder using precipitation method. The solvothermal method assisted the preparation route using ethanol at 180 o C for 90 min. The non-ionic surfactant...

Because of the dyes’ potential toxicity and visibility in surface waters, the treatment of hazardous organic dyes has piqued the attention of many people. The heterogeneous photocatalysis using titanium (TiO2), the most promising technology to decolorize the chlorazol black BH dye. This photoreaction was followed to the pseudo-first-order with low...

The flower-like hierarchical polyoxometalate (POM) - Dopamine nanostructure has successfully been synthesized in a ratio (1:1) from (POM) as Phosphotungstic (PTA) acid ( kegging-type) with Dopamine in Tris-HCl tris [aminomethane] at pH [10.00-8.8] and then aging using Microwave technique for 12 min, the result color powder was greenish-yellow. The...

This research included a study of the physical optical properties of Congo red dye that dissolved in distilled water and ethanol solvents at several concentrations (0.2×10⁻⁵, 0.5 ×10⁻⁵, 1×10⁻⁵, 0.2×10⁻⁴) mol/L. The physical optical properties of Congo Red films dye, which was prepared by casting method at dye concentration (10⁻³) M. An ultraviolet-...

How to cite this article Mohammad H M., Saeed S I., Ahmed L M.. Broccoli-like

In this study, two different methods were described for the synthesis of 2-(aryl)-3-((2-oxo-2-(2-oxo-2H-chromen-3-yl)ethyl)amino)imidazolidin-4-one derivatives under microwave irradiation. The first method was step by step method. In step by step method, 3-(2-hydrazinylacetyl)-2H-chromen-2-one and aromatic aldehydes in 1 mL of absolute ethanol were...

Hydrogen gas is considered as a key fuel of the cleanest energy for the future. It is projected to resolve the local problems related to the air quality that was created by the automobile industries. The combustion of hydrogen gas is without emission of any carbon oxides but it only produces water. It is of considerable importance from environmenta...

Hydrogen gas is considered as a key fuel of the cleanest energy for the future. It is projected to resolve the local problems related to the air quality that was created by the automobile industries. The combustion of hydrogen gas is without emission of any carbon oxides but it only produces water. It is of considerable importance from environmenta...

In this study, two different methods were described for the synthesis of 2-(aryl)-3-((2-oxo-2-(2-oxo-2H-chromen-3-yl)ethyl)amino)imidazolidin-4-one derivatives under microwave irradiation. The first method was step by step method. In step by step method, 3-(2-hydrazinylacetyl)-2H-chromen-2-one and aromatic aldehydes in 1 mL of absolute ethanol were...

How to cite this article Taresh B H., Fakhri FH., Ahmed L M. Synthesis and Characterization of Cuo/CeO 2 Nanocomposites and Investigation Their In this work, CuO/CeO 2 nancomposite was prepared via hydrothermal route. The product was prepared under 12 h and 150 o C. The shape, size, and crystalline structure have been investigated through using var...

How to cite this article Inverse spinel nickel ferrite (NiFe 2 O 4 (or) NiO.Fe 2 O 3) like-broccoli shape was manufactured as a brown nanoparticle. The NiFe 2 O 4 preparation is done in the presence of the mixture of precursor salts in a ratio (2:1) of the iron ion with nickel ion prior to the presence of a nonpolar surfactant (hexamine). Hexamine...

Work aimed to focus on the synthesis of the nanohybrid compounds from silver nanoparticles (AgNPs) with Nickel/Aluminum layers of double hydroxide (LDHs) by the direct and indirect ion-exchange method at pH 6.5 as a light green-yellow colored nanostructure powder. The silver nitrate precursor was reduced to Ag nanoparticles by starch as reducing an...

The electronic properties of carbon nanotubes CNTs, such as ionization potential (IP), electron affinity (EA), energy gap (Eg), Fermi energy (Ef), binding energy (Eb), the density of state (DOS), and IR spectral properties, investigated after substituted the OH, SO, SiO2, H2O, and N2 groups on the optimization structure of CNT (3,3). The lengths of...

In this project, the deep green power from spinel cobalt chromite (CoCr2O4) nano-crystals carried out using the co-precipitation method and then calcinated at 600 o C for 4 hours. This produced nano-crystal (spinel CoCr2O4) fabricated using the ultrasonic technique to link it with zirconium dioxide (ZrO2) in ratios 1:2 and 1:3, respectively. The X-...

In this work new thiosemicarbazide derivatives were synthesized to obtain the intermediate of thiosemcarbazone compounds (1-5) by thiosemicarbazide reaction with several aromatic aldehydes, following treatment of compounds (1-5) with 2-chloroethanoic acid with sodium acetate, a series of compounds (6-8) was prepared. There were 1,3-oxazepine-4,7-di...

Water pollution due to the discharge of industrial effluents such as dyes is a serious concern that requires a potential remedy. In this context, photocatalysis is a potent and ecofriendly strategy to degrade these toxic water effluents. In this study, a novel approach to prepare TiO 2 nanoneedles decorated with Ag nanoparticles is reported. The sa...

Co-Zn alloy coatings have been electrodeposited on steel in choline chloride (ChCl) based liquid in the presence of various concentrations of water. The conductivities of Co, Zn, and Co-Zn electrolytes were found to improve through enhancing volumes of water. The speciation of Co in a Co-Zn electrolyte was investigated using UV-visible spectroscopy...

The purpose of this manuscript was to remove and decolorize vitamin B12 from an aqueous solution of drug tablets using ZrO2 as an environmentally friendly method via advanced oxidation processes. Some oxidant agents such as Fe2+, H2O2, K2S2O8 and their mixture of were performed, and the best adsorption sequences have occurred with increased adsorpt...

patent

تعد طبقات النانو غيرالعضوية مواد ينتظرها مستقبلا مرموقا نظرا لخصائصها المميزة مثل سهولة التحضير, والقدرة على إقحام أنواع مختلف من الايونات ( غير العضوية , و العضوية , والجزيئات الحيوية , و حتى الجينات), كما تمتلك الاستقرار الحراري العالي, وسهولة تحرر الايونات المقحمة بين الطبقات مما يدل على سلوكها الحيوي العالي و سهولة التحلل الحيوي. لقد تم تطبيق ه...

The work aimed to focus on the synthesis of the ratio 1:1 from phosphotungstic acid-dopamine nano-structure in tris(hydroxymethyl)-aminomethane (Tris)-HCl solution at pH ranged 8.5-9.5. That leads to prepared a light yellow colored nanostructure powder. The SEM analysis gave reasonable shapes for this prepared nanostructure such as flower-like nano...

One of the goals of this project was to utilize the hydrothermal method in preparation of α-MoO3 nano-belts as bluish power at 180°C for 5h. This nanomaterial was incorporated with rutile-TiO2 to produce a nanocomposite photocatalyst by a direct ultrasonic method in a ratio of 0.25(α-MoO3): 9.75(TiO2) as w/w ratio. The characterized of samples foun...

The carbon nanotubes (CNTs) in a zigzag (4, 0) shape before and after substituted with F, Cl, and Br atoms were used as a basic computer model depending on the Quantum Espresso package DFT process (in the present work. This method demonstrated that the electronic structure, bandgap, total energy, FTIR spectrum, Raman spectrum, and depolarization sp...

Dark and photoreactions have been employed to handle the various hazardous organic water contaminants as Synergistic technologies. The removal (dark reaction) and the photo-decolorization ( photoreaction) of azo carmosine dye (E122) as a food dye in an aqueous solution using Rutile- TiO2 and UV-A light were investigated in this work. Various parame...

Thin films of nanometer sized cadmium sulfide were directly prepared by aerosol-assisted chemical vapor deposition (AA-CVD) method, cadmium ethyl xanthate complex was used as precursor material at 225 oC, 250 oC and 275 oC. The thermal decomposition of complex was characterized by thermal analysis, (thermogravimetric analysis (TGA) and a differenti...

This work focused on the modification of a WO3 surface by incorporating a TiO2 surface via ultrasonic techniques to produce a nano-composite in the ratio 1:2 WO3:TiO2. All materials were then characterised by x-ray diffraction, atomic force microscopy, and UV-VIS spectrophotometry. The x-ray diffraction data proved that the WO3 incorporated the TiO...

Abstact.In this study, a new metal ion complex of iron(III) was prepared with the ligand of; [4-((2-hydroxybenzylidene)amino)-1,5-dimethyl-2-phenyl-1,2-dihydro-3H-pyrazol-3-one] with the mole ratio [2:1] from L: M. The metal ion complex was characterized by spectroscopic techniques and elemental analysis such as: FT-IR Spectra, U.V-Vis spectra, mel...

This research estimated the impact of photocatalytic decolorization on 5 ppm from Acid Black 2 (nigrosine) dye by employing bulk TiO2 / artificial UV-Alight system. The dye was best decolorized at pH equal to 7.4 in Edecolor. % 98.573% at 60 min and 40 oC. The effect of temperature on this photo reaction of acid black 2 dye with TiO2 indicated to t...

The generation and accumulation of environmental pollutant of industrial contaminations gave it a big challenge to develop many removal strategies of pollution. Textile dyes as dispersive blue 26 dye affected by several decolorization parameters like as temperature, initial pH and initial concentrations of dye. These variables parameter were studie...

Advanced oxidation processes (AOPs) are considered to be vital methods for treating the contaminations produced mainly by the human activations. In present-day, UV light or solar light, bulk and nano- photocatalysts are often used to enhance this technology by creating the highly reactive species such as the hydroxyl radicals. Extreme hydroxyl radi...

This research compares the addition of some oxidant agents such as Fe2+, H2O2 and mixture from both to aqueous solution of dispersive yellow 42 dye, which regarded as an organic contaminant. This work performed during the dark reaction and photo reaction under artificial UV-A light (HPML -125 watt). In reality, the addition of the oxidant agents le...

The effects of additives on the electrodeposition of ZnSn alloy from aqueous electrolyte have been the subject of considerable interest in the literature; however, to date there has been little consideration of their effects on alloy electrodeposition from Deep Eutectic Solvents (DESs). This work will show, for the first time, the effects of boric...

This article describes the synthesis of ZnO nanoparticles (Nps) using the co-precipitation method and then calcinated at 500oC for 2 h. The photo activity of ZnO nanoparticles was examined in photo decolorization of methyl green dye under artificial UV -A light. This prepared photocatalyst (ZnO Np) was modified his surface by 2% Ag doped using the...

The synthesis of complexes is carried out in two steps: first step formation of acetyl acetone and hexafluoroacetylacetone with Ni(II) and Co(III), second step formation in enamine of acetylacetone and enamine of hexafluoroacetylacetone with Ni(II) and Co(III). The prepared compounds have been characterized by melting point, FT-IR and NMR. There ar...

The spinel structure Mn3O4 and the spinel Mn3O4/ZrO2 nano-composites particles were synthesized successfully as photocatalysts by employing the co-precipitation process and ultrasonic technique, respectively. The morphology of the top mention prepared photocatalysts was distinguished using X‐ray diffraction (XRD) technology and atomic force microsc...

This research reported a direct, environmentally friendly, economical, and simple method of using an ultrasonic instrument as a green technique to combine WO3 with TiO2 in ratios 0.5:1, 0.25:1, and 0.16:1 as composites 1, 2 and 3 respectively. Powder X-Ray Diffraction data identified the mean crystalline sizes of the commercial WO3, commercial TiO2...

- Several parameters have been studied in this manuscript to investigate the effect of certain parameters on removal of reactive yellow 14 (RY 14) and reactive green (RG) dyes from aqueous solution as a textile dye. Parameters such as temperature, initial concentration of dye and pH were taken in consideration to reach the perfect removal and decol...

A estrutura de espinélio Mn3O4 e as partículas de nano-compósitos de espinélio Mn3O4/ZrO2 foram sintetizadas com sucesso como fotocatalisadores, empregando o processo de co-precipitação e a técnica ultrassônica, respectivamente. A morfologia dos fotocatalisadores preparados foi distinguida usando a tecnologia de difração de raios-X (DRX) e microsco...

This research reported a direct, environmentally friendly, economical, and simple method of using an ultrasonic instrument as a green technique to combine WO3 with TiO2 in ratios 0.5:1, 0.25:1, and 0.16:1 as composites 1, 2 and 3 respectively. Powder X-Ray Diffraction data identified the mean crystalline sizes of the commercial WO3, commercial T...

RESUMO Esta pesquisa relatou um método direto, ecológico, econômico e simples de usar um instrumento ultrassônico como uma técnica verde para combinar WO3 com TiO2 nas proporções 0,5:1, 0,25:1 e 0,16:1 como compósitos 1, 2 e 3, respectivamente. Os dados de difração de raios-X em pó, identificaram os tamanhos médios do reticulos cristalinos dos WO3...

In this work, a new mixed-ligand binuclear Co(II) complex of Schiff base was prepared. Moreover, the characterization of this prepared complex was performed by measurement of melting points, UV-Vis spectra, FT-IR spectra, and magnetic susceptibility measurements, and later compared with metal and ligand solutions. It has been discovered that the Sc...

This research compares the addition of some oxidant agents such as Fe2+, H2O2 and mixture from both to aqueous solution of dispersive yellow 42 dye, which regarded as an organic contaminant. This work performed during the dark reaction and photo reaction under artificial UV-A light (HPML -125 watt). In reality, the addition of the oxidant agents le...

The series complex formation nickel(II) or cobalt(III) with hexafluoroacetylacetone, pyrazole, 3,5- dimethylpyrazole, and 3,5-bis(trifluoromethyl)-1H-pyrazole were prepared. The first reaction step included the synthesis of the complex using hexafluoroacetylacetone as a ligand with Co(III) or Ni(II), metals with high spinwith  donate and enol-form...

In this work, a new mixed-ligand binuclear Co(II) complex of Schiff base was prepared. Moreover, the characterizations of this prepared complex were performed by melting points, UV-Vis spectra, FT-IR spectra, and magnetic susceptibility measurements, then compared with metal and ligand solutions. It has been discovered that the Schiff bases with Co...

The series complex formation nickel(II) or cobalt(III) with hexafluoroacetylacetone, pyrazole, 3,5-dimethylpyrazole, and 3,5-bis(trifluoromethyl)-1H-pyrazole were prepared. The first reaction step included the synthesis of the complex using hexafluoroacetylacetone as a ligand with Co(III) or Ni(II), metals with high spin with  donate and enol-form...

This manuscript was focused on to how can utilize from UV-A light in order to decolorize the basic fuchsine dye from the aqueous solution at pH 6.4. The produced results from this study were indicated that the acidic medium is favor to decolorize this dye at pH equal to 4.6 and the efficiency of photoreaction increases from 73.75 % to 89.63 % at 70...

In this work, a new mixed-ligand binuclear Co(II) complex of Schiff base was prepared. Moreover, the characterization of this prepared complex was performed by measurement of melting points, UV-Vis spectra, FT-IR spectra, and magnetic susceptibility measurements, and later compared with metal and ligand solutions. It has been discovered that the Sc...

This manuscript is interested with the using Chlorazol black BH dye as a model compound. This photo reaction was obeyed first-order kinetics with low activation energy equal to27.135 kJ/mol. Moreover, the thermodynamic parameters were calculated using the Arrhenius equation, the Eyring-Polanyi equation and the Gibbs equation, then proved this photo...

This study focused on the photocatalytic decolourization of cobaltous phthalocyaninate dye (PcCo) from ZnO suspension solution under artificial UV-A light. The results showed that the photo-decolourization process of this dye process was obeyed to pseudo-first order kinetics. Moreover, the optimization results explained that the maximum value of de...

This study examined the photocatalytic decolorization of safranine O dye by using TiO 2 nanopowder as a photocatalyst, under illumination with using artificial UV-A-light. The behavior of this reaction was pseudo first order and the maximum of removal was 88.176% in 100 min. at 30°C. The increased of reaction temperature enhances the photoreaction,...

The aim of this manuscript was to modify the ZnS surface by incorporating with CdS photocatalyst. This manner led to depressing the recombination process and increasing the activity. The X-ray Powder Diffraction (XRD) data were proved that the CdS incorporated with ZnS and formed ZnS-CdS nanocomposite by observing new peaks at 26.92 o , 28.62 o , 3...

This study examined the photocatalytic decolorization of safranine O dye by using TiO 2 nanopowder as a photocatalyst, under illumination with using artificial UV-Alight. The behavior of this reaction was pseudo first order and the maximum of removal was 88.176% in 100 min. at 30 o C. The increased of reaction temperature enhances the photoreaction...

The aim of this manuscript was to modify the ZnS surface by incorporating with CdS photocatalyst. This manner led to depressing the recombination process and increasing the activity. The X-ray Powder Diffraction (XRD) data were proved that the CdS incorporated with ZnS and formed ZnS-CdS nanocomposite by observing new peaks at 26.92o, 28.62o, 30.52...

Conclusions : The main conclusions are formed of [Co2(OPD)2L)]Cl2 complex in (1 : 2) "metal: ligand" stoichiometry and with Greenish Brown colour. From FTIR analysis, the new bands appeared in the regions, (468.72-542.02) cm-1 which may probably be due to the formation of M-O and M-N bands respectively. The increased melting point is proved formed...

This work was investigated from the decolorization of methyl green dye in presence of ZrO2 under certain conditions. The raised of temperature leads to increase the rate of this photoreaction. The activation energy was found to be 26.005 kJmolȡ1. Moreover, some oxidation agents was addition to dye solution with ZrO2 and given the following sequence...

Fundamentals of XRD as Nanotechnology instruments

Lecture for common methods to prepare a nanomaterials - part 2

Lecture for common methods to prepare a nanomaterials - part 1

The code on plastic water bottles and food containers items appears as a triangle containing a number from 1 to 7. The understanding of the seven plastic codes is very important for the people to decide the reusing of plastic and food containers and also to know which plastics to be recycled or not. This study is aimed to know the level of people e...