Study of the Effect of Ce &lt;sup&gt;3+&lt;/sup&gt; on the Gas Sensitivity and Magnetic Properties of Cu&lt;sub&gt;x&lt;/sub&gt;Ce&lt;sub&gt;0.3-X&lt;/sub&gt;Ni&lt;sub&gt;0.7&lt;/sub&gt;Fe&lt;sub&gt;2&lt;/sub&gt;O&lt;sub&gt;4&lt;/sub&gt; Ferrite Nanoparticles

Tagreed M. Al-Saadi

doi:10.4028/p-tw92h3

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Publication Date

Thu Apr 06 2023

Journal Name

Materials Science Forum

Volume

1083

DOI

10.4028/p-tw92h3

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Study of the Effect of Ce 3+ on the Gas Sensitivity and Magnetic Properties of CuxCe0.3-XNi0.7Fe2O4 Ferrite Nanoparticles

Tagreed M. Al-Saadi

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This study includes the preparation of the ferrite nanoparticles Cu_xCe_0.3-XNi_0.7Fe₂O₄ (where: x = 0, 0.05, 0.1, 0.15, 0.2, 0.25, 0.3) using the sol-gel (auto combustion) method, and citric acid was used as a fuel for combustion. The results of the tests conducted by X-ray diffraction (XRD), emitting-field scanning electron microscopy (FE-SEM), energy-dispersive X-ray analyzer (EDX), and Vibration Sample Magnetic Device (VSM) showed that the compound has a face-centered cubic structure, and the lattice constant is increased with increasing Cu ion. On the other hand, the compound has apparent porosity and spherical particles, and there are no other elements other than those participating in the preparation of the compound, which means that it is of high purity. The prepared compound possesses excellent magnetic properties due to the narrowness of the magnetic hysteresis ring. The gas sensing system found that the compound has good sensitivity to H₂S gas.

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Publication Date

Sun Jan 01 2017

Journal Name

Catalysis Science & Technology

Mechanisms governing selective hydrogenation of acetylene over γ-Mo2N surfaces

Zainab N.

Mohammednoor

Hussein A.

Zhong-Tao

Bogdan Z.

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We demonstrate that the selective hydrogenation of acetylene depends on energy profile of the partial and full hydrogenation routes and the thermodynamic stability of adsorbed C₂H₂ in comparison to C₂H₄.

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Publication Date

Sat May 01 2021

Journal Name

Journal Of Physics: Conference Series

Theoretical Estimation of Electronic Flow Rate at Al-TiO2 Interfaces System

Hadi J M

Taif Saad Al

AbdulKareem A

Suad H

Mohsin A

Rajaa Faisel

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AbstractThe mechanism of the electronic flow rate at Al-TiO2 interfaces system has been studied using the postulate of electronic quantum theory. The different structural of two materials lead to suggestion the continuum energy level for Al metal and TiO2 semiconductor. The electronic flow rate at the Al-TiO2 complex has affected by transition energy, coupling strength and contact at the interface of two materials. The flow charge rate at Al-TiO2 is increased by increasing coupling strength and decreasing transition energy.

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Publication Date

Fri Apr 01 2022

Journal Name

International Journal Of Nanoscience

Study of the Interaction Between Reduced Graphene Oxide and NO2Gas Molecules via Density Functional Theory (DFT)

Shaima K.

Mohammed T.

Mudar Ahmed

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Electronic properties such as density of state, energy gap, HOMO (the highest occupied molecular orbital) level, LUMO (the lowest unoccupied molecular orbital) level and density of bonds, as well as spectroscopic properties like infrared (IR), Raman scattering, force constant, and reduced masses for coronene C₂₄, reduced graphene oxide (rGO) C₂₄O₅and interaction between C₂₄O₅and NO₂gas molecules were investigated. Density functional theory (DFT) with the exchange hybrid function B3LYP with 6-311G** basis sets through the Gaussian 09 W software program was used to do these calculations. Gaussian view 05 was em

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Publication Date

Tue Jan 01 2019

Journal Name

Indian Journal Of Public Health Research & Development

Effect of Olea europea L Extraction and TiO2 Nanoparticles against Pseudomonas aeruginosa

Rana

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(1)

Publication Date

Sun Nov 01 2020

Journal Name

Journal Of Physics: Conference Series

Laser Irradiation Effect on The Optical Properties of CoO2Thin Films deposited via Semi-Computerized Spraying System

Mushtaq Talib

Nathera

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AbstractIn this paper deals with the effect laser irradiation on the optical properties of cobalt oxide (CoO2) thin films and that was prepared using semi computerized spray pyrolysis technique. The films deposited on glass substrate using such as an ideal value concentration of (0.02)M with a total volume of 100 ml. With substrate temperature was (350 C), spray rate (15 ml/min).The XRD diffraction given polycrystalline nature with Crystal system trigonal (hexagonal axes). The obtained films were irradiated by continuous green laser (532.8 nm) with power 140 mW for different time periods is 10 min,20min and 30min. The result was that the optical properties of cobalt oxide thin films affe ... Show More

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Publication Date

Tue May 01 2018

Journal Name

Journal Of Physics: Conference Series

Theoretical Discussion of Electron Transport Rate Constant at TCNQ / Ge and TiO2 System

Hadi J M

B

Mohsin A

Ahmed M

Abbas K

Raad H

Rawnaq Q

Naba

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Publication Date

Wed Mar 01 2023

Journal Name

Journal Of Semiconductors

Bilayer MSe2 (M = Zr, Hf, Mo, W) performance as a hopeful thermoelectric materials

ZT

thermoelectric property

2D-bilayer

Boltzmann-transport equation

TE power factor

Mahmood Radhi

Ebtisam M-T.

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AbstractSignificant advancements in nanoscale material efficiency optimization have made it feasible to substantially adjust the thermoelectric transport characteristics of materials. Motivated by the prediction and enhanced understanding of the behavior of two-dimensional (2D) bilayers (BL) of zirconium diselenide (ZrSe2), hafnium diselenide (HfSe2), molybdenum diselenide (MoSe2), and tungsten diselenide (WSe2), we investigated the thermoelectric transport properties using information generated from experimental measurements to provide inputs to work with the functions of these materials and to determine the ... Show More

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Publication Date

Sat May 01 2021

Journal Name

Journal Of Physics: Conference Series

Violet Laser Irradiation Effect on The Optical Properties of Cobalt oxide (CoO2) Thin Films deposited via Semi-Computerized Spraying System

Mushtaq Talib

Nathera

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AbstractThe existing investigation explains the consequence of irradiation of violet laser on the optic properties of (CoO2) films. The film was equipped by the utilization of semi-computerized spray pyrolysis technique (SCSPT), it is the first time that this technique is used in the preparation and irradiation using a laser in this technique. From the XRD analysis, the crystalline existence with trigonal crystal system was when the received films were processed by continuous violet laser (405 nm) with power (1W) for different laser irradiation time using different number of times a laser scan (0, 6, 9, 12, 15 and 18 times) with total irradiation time(0,30,45,60,75,90 min ... Show More

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Publication Date

Tue Oct 24 2023

Journal Name

Chemical Engineering & Technology

Electrodeposition of Manganese Dioxide under Different Conditions: Application of MnO2/Carbon Fibers in the Electrosorption Process

Carbon fiber

Chromium(VI)

Electrodeposition

Electrosorption

Manganese dioxide

Zainab M.

Rasha H.

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AbstractAnodic electrodeposition was used to synthesize a composite electrode of nanostructured manganese dioxide/carbon fiber (CF) galvanostatically. Different characterization results of the nanostructured MnO2 were obtained by varying the H2SO4 concentration and the current density. Field emission scanning electron microscopy, X‐ray diffraction, and atomic force microscopy were utilized to characterize the prepared composite electrodes. The best conditions were: 0.3 mA cm−2 current density and 0.64 M H2SO4 concentration. The electrosorption performance of the MnO ... Show More

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Publication Date

Thu Mar 30 2023

Journal Name

Optics Continuum

Ultrafast lithium disilicate veneer debonding time assisted by a CO2 laser with temperature control

Ayat

Rawaa A.

Abdulhadi

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We report on using a CO₂ (10.6 µm) laser to debond the lithium disilicate veneers. Sixty-four sound human premolar teeth and 64 veneer specimens were used in the study. The zigzag movement via CO₂ laser handpiece along with an air-cooled jet to prevent temperature elevation above the necrosis temperature limit (5.5 C°) was applied. The optimal deboning irradiation time was super-fast, at about 5 seconds at 3 Watt CO₂ laser power. It is 20 times less than any previously published work for veneers debonding. The enamel beneath the debonded veneers has been assessed by atomic force microscopy (AFM) and shear stress technique as criteria for the easiness of debonding. The

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