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Sharaf IM, Laifi J, Alraddadi S, Saad M, Koubesy M, Elewa NN, Almohiy H, Ismail YM, Soldatov A, aboraia AM. Unraveling the effect of Cu doping on the structural and morphological properties and photocatalytic activity of ZrO 2. Heliyon 2024; 10:e23848. [PMID: 38192836 PMCID: PMC10772618 DOI: 10.1016/j.heliyon.2023.e23848] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2023] [Revised: 12/01/2023] [Accepted: 12/13/2023] [Indexed: 01/10/2024] Open
Abstract
Pristine ZrO2 and doped with different concentrations of Copper (0-7 %) were synthesized using a sol-gel combustion route. Several advanced techniques like XRD, EDX, TEM, XPS, P.L., and UV-vis spectrophotometer have characterized the compositions. The XRD proved that all peaks matched with a tetragonal phase of ZrO2 without any impurities of other phases. An average crystallite size rises from 20 to 55 nm by increasing the concentrations of Copper. The elemental analysis was examined by EDX and confirmed the presence of Cooper, Zirconium, and Oxygen. The red shift was observed due to a decrease in the bandgap (5.5-4.01 eV) with increasing the Cu concentrations. From the analysis of photocatalysis of pure ZrO2 and different concentrations of Cu-doped ZrO2 for M.B., RHB, and mix of them. The increase in doping of Cu led to enhancing the performance of the removing MB from 35 to 80 %, however, the RHB degradation was from 42 to 81 % while the mix of M.B. and RHB reached 85 % with 7 % Cu-doping ZrO2.
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Affiliation(s)
- Ibrahim M. Sharaf
- Physics Department, Faculty of Science, Al-Azhar University, Assiut Branch 71524, Egypt
| | - J. Laifi
- Physics Department, College of Science, Jouf University, P.O. Box 2014, Sakaka, Kingdom of Saudi Arabia
| | - Shoroog Alraddadi
- Department of Physics, University College in AlJumum, Umm Al-Qura University, PO Box 715, Makkah 21955, Saudi Arabia
| | - M. Saad
- Department of Radiological Sciences, College of Applied Medical Science, King Khalid University, Abha, Kingdom of Saudi Arabia
| | - M.S.I. Koubesy
- Physics Department, Faculty of Science, Al-Azhar University, Assiut Branch 71524, Egypt
| | - Nancy N. Elewa
- Physics Department, Faculty of Science, Ain Shams University, Cairo, Egypt
| | - Hussain Almohiy
- Department of Radiological Sciences, College of Applied Medical Science, King Khalid University, Abha, Kingdom of Saudi Arabia
| | - Yasser M. Ismail
- Department of Physics, Faculty of Science, Islamic University of Madinah, Kingdom of Saudi Arabia
| | - Alexander Soldatov
- The Smart Materials Researcher Institute, Southern Federal University, Rostov on-Don, Russia
| | - Abdelaziz M. aboraia
- Physics Department, Faculty of Science, Al-Azhar University, Assiut Branch 71524, Egypt
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Alraddadi S. The impact of thermal treatment on the mechanical properties and thermal insulation of building materials enhanced with two types of volcanic scoria additives. Heliyon 2023; 9:e20814. [PMID: 37860518 PMCID: PMC10582386 DOI: 10.1016/j.heliyon.2023.e20814] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2023] [Revised: 08/12/2023] [Accepted: 10/07/2023] [Indexed: 10/21/2023] Open
Abstract
The need to substitute cement with eco-friendly building materials has increased in recent years, and attempts to enhance the mechanical and thermal insulation properties of these materials are ongoing. Therefore, the present study aims to use two different types of scoria as substitutes for cement in building materials and investigate the impact of thermal treatment on improving mechanical characteristics and thermal insulation. Black and red volcanic scoria, both before and after thermal treatment at different temperatures (600, 700, 800, and 900 °C), were utilized as cement substitutes in concrete specimens. Concrete specimens with different proportions (0-30 % wt.%) of black and red scoria were cured for different durations (14, 21, 28, and 91 days), and then tested for compressive strength. The compressive strength of specimens increased with increasing curing time, but decreased when scoria content exceeded wt.10 %. Furthermore, thermal treatment positively impacted the compressive strength of concrete specimens with red scoria, but negatively affected those with black scoria, owing to the increase in crystalline phases with increasing temperature. The specimen containing 10 % red scoria thermally treated at 900 °C and cured for 91 days yielded the highest compressive strength (60 ± 1.22 MPa). Further, the thermal insulation analysis of the concrete specimens with each type of thermally treated scoria was performed on day 28 of curing. The thermal insulation increased as the proportions of black and red scoria increased, which involved increasing the thermal treatment temperature of both scoria from room temperature to 900 °C on day 28 of curing. Additionally, the thermal insulation of concrete specimens treated with red scoria was more optimized than that of concrete treated with black scoria, particularly at high thermal treatment temperatures, and more than seven times as much as that of ordinary concrete. The lowest thermal conductivity value of the specimen was 0.157 ± 0.01 W m-1 K-1. Based on the findings, concrete with thermally treated red scoria is a suitable eco-friendly building material with high compressive strength and efficient thermal insulation properties.
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Affiliation(s)
- Shoroog Alraddadi
- Department of Physics, Umm Al-Qura University, Makkah, 24382, Saudi Arabia
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Thabit HA, Ismail AK, Kabir NA, Al Mutairi AM, Bafaqeer A, Alraddadi S, Jaji ND, Sayyed M, Al-Ameri SM. Investigation of the thermoluminescence dosimeter characteristics of multilayer ZnO(300 nm)/Ag(50 nm)/ZnO(x) thin films for photonic dosimetry applications. Optical Materials 2023; 137:113548. [DOI: 10.1016/j.optmat.2023.113548] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
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Thabit HA, Kabir NA, Ismail AK, Alraddadi S, Bafaqeer A, Saleh MA. Development of Ag-Doped ZnO Thin Films and Thermoluminescence (TLD) Characteristics for Radiation Technology. Nanomaterials (Basel) 2022; 12:3068. [PMID: 36080105 PMCID: PMC9459964 DOI: 10.3390/nano12173068] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/01/2022] [Revised: 08/22/2022] [Accepted: 08/27/2022] [Indexed: 06/15/2023]
Abstract
This work examined the thermoluminescence dosimetry characteristics of Ag-doped ZnO thin films. The hydrothermal method was employed to synthesize Ag-doped ZnO thin films with variant molarity of Ag (0, 0.5, 1.0, 3.0, and 5.0 mol%). The structure, morphology, and optical characteristics were investigated using X-ray diffraction (XRD), scanning electron microscope (SEM), energy-dispersive X-ray spectroscopy (EDX), photoluminescence (PL), and UV-vis spectrophotometers. The thermoluminescence characteristics were examined by exposing the samples to X-ray radiation. It was obtained that the highest TL intensity for Ag-doped ZnO thin films appeared to correspond to 0.5 mol% of Ag, when the films were exposed to X-ray radiation. The results further showed that the glow curve has a single peak at 240-325 °C, with its maximum at 270 °C, which corresponded to the heating rate of 5 °C/s. The results of the annealing procedures showed the best TL response was found at 400 °C and 30 min. The dose-response revealed a good linear up to 4 Gy. The proposed sensitivity was 1.8 times higher than the TLD 100 chips. The thermal fading was recorded at 8% for 1 Gy and 20% for 4 Gy in the first hour. After 45 days of irradiation, the signal loss was recorded at 32% and 40% for the cases of 1 Gy and 4 Gy, respectively. The obtained optical fading results confirmed that all samples' stored signals were affected by the exposure to sunlight, which decreased up to 70% after 6 h. This new dosimeter exhibits good properties for radiation measurement, given its overgrowth (in terms of the glow curve) within 30 s (similar to the TLD 100 case), simple annealing procedure, and high sensitivity (two times that of the TLD 100).
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Affiliation(s)
- Hammam Abdurabu Thabit
- Department of Physics, Faculty of Science, Universiti Teknologi Malaysia, UTM, Johor Bahru 81310, Malaysia
| | - Norlaili A. Kabir
- School of Physics, Universiti Sains Malaysia, Pulau Pinang 11800, Malaysia
| | - Abd Khamim Ismail
- Department of Physics, Faculty of Science, Universiti Teknologi Malaysia, UTM, Johor Bahru 81310, Malaysia
| | - Shoroog Alraddadi
- Department of Physics, Umm AL-Qura University, Makkah 24382, Saudi Arabia
| | - Abdullah Bafaqeer
- Chemical Reaction Engineering Group (GREG), School of Chemical and Energy Engineering, Universiti Teknologi Malaysia, UTM, Johor Bahru 81310, Malaysia
| | - Muneer Aziz Saleh
- Office of Radiation Protection, Department of Health, Tumwater, WA 98501, USA
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Abstract
Recent progress in impurity-doped topological insulators has shown that the gap at the Dirac point shrinks with reducing temperature.
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Affiliation(s)
- Turgut Yilmaz
- Department of Physics, University of Connecticut
- Storrs
- USA
- Department of Physics, Science and Literature Faculty, Uludag University
- Bursa 16059
| | - William Hines
- Department of Physics, University of Connecticut
- Storrs
- USA
| | - Shoroog Alraddadi
- Department of Physics, Umm Al-Qura University
- Makkah 24382
- Kingdom of Saudi Arabia
| | | | - Boris Sinkovic
- Department of Physics, University of Connecticut
- Storrs
- USA
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Yilmaz T, Hines W, Alraddadi S, Budnick JI, Sinkovic B. Correction: Origin of the temperature dependence of the energy gap in Cr-doped Bi 2Se 3. Phys Chem Chem Phys 2018; 20:11484. [DOI: 10.1039/c8cp90075b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Correction for ‘Origin of the temperature dependence of the energy gap in Cr-doped Bi2Se3’ by Turgut Yilmaz et al., Phys. Chem. Chem. Phys., 2018, DOI: 10.1039/c7cp08049b.
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Affiliation(s)
- Turgut Yilmaz
- Department of Physics
- University of Connecticut
- Storrs
- USA
- Department of Physics, Science and Literature Faculty
| | - William Hines
- Department of Physics
- University of Connecticut
- Storrs
- USA
| | - Shoroog Alraddadi
- Department of Physics
- Umm Al-Qura University
- Makkah 24382
- Kingdom of Saudi Arabia
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Alraddadi S, Hines W, Yilmaz T, Gu GD, Sinkovic B. Structural phase diagram for ultra-thin epitaxial Fe3O4 / MgO(0 0 1) films: thickness and oxygen pressure dependence. J Phys Condens Matter 2016; 28:115402. [PMID: 26894934 DOI: 10.1088/0953-8984/28/11/115402] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
A systematic investigation of the thickness and oxygen pressure dependence for the structural properties of ultra-thin epitaxial magnetite (Fe3O4) films has been carried out; for such films, the structural properties generally differ from those for the bulk when the thickness ⩽10 nm. Iron oxide ultra-thin films with thicknesses varying from 3 nm to 20 nm were grown on MgO (0 0 1) substrates using molecular beam epitaxy under different oxygen pressures ranging from 1 × 10(-7) torr to 1 × 10(-5) torr. The crystallographic and electronic structures of the films were characterized using low energy electron diffraction (LEED) and x-ray photoemission spectroscopy (XPS), respectively. The quality of the epitaxial Fe3O4 ultra-thin films was judged by magnetic measurements of the Verwey transition, along with complementary XPS spectra. It was observed that under the same growth conditions the stoichiometry of ultra-thin films under 10 nm transforms from the Fe3O4 phase to the FeO phase. In this work, a phase diagram based on thickness and oxygen pressure has been constructed to explain the structural phase transformation. It was found that high-quality magnetite films with thicknesses ⩽20 nm formed within a narrow range of oxygen pressure. An optimal and controlled growth process is a crucial requirement for the accurate study of the magnetic and electronic properties for ultra-thin Fe3O4 films. Furthermore, these results are significant because they may indicate a general trend in the growth of other oxide films, which has not been previously observed or considered.
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Affiliation(s)
- S Alraddadi
- Department of Physics, University of Connecticut, Storrs, CT 06269, USA
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