Article
Materials Science, Multidisciplinary
P. Harshapriya, Deepak Basandrai, Pawandeep Kaur
Summary: The sol-gel technique was used to prepare pure and Y-Ag-doped multiferroic bismuth ferrite nanoparticles. The structural, morphological, magnetic, and microwave absorption properties of the doped nanoparticles were examined. The Y-Ag-doped nanoparticles showed improved band gaps, saturation magnetizations, and EMI shielding effectiveness compared to the pure nanoparticles.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2023)
Article
Materials Science, Multidisciplinary
Ashok Kumawat, Saikat Chattopadhyay, Rajneesh Kumar Verma, Kamakhya Prakash Misra
Summary: The study revealed that the band gap of Eu-doped ZnO nanoparticles showed a redshift, while an increase in microstrain caused a blueshift. Lowering the temperature was found to enhance the blue emission intensity of ZnO nanoparticles, with vertically grown nanostructures demonstrating better luminescence behavior. EZO shows strong potential for thermal sensing and bioimaging applications.
Article
Chemistry, Physical
Wubishet Kejela Tolossa, Paulos Taddesse Shibeshi
Summary: Zn1-x(Co, Fe)(x)O nanoparticles were synthesized via sol-gel combustion method, exhibiting single-phase hexagonal structure and small crystallite sizes. Upon optical activation, the nanoparticles showed broad optical band gaps and reduced charge carrier recombination. Co-doping enhanced the antibacterial activity of the nanoparticles.
CHEMICAL PHYSICS LETTERS
(2022)
Article
Materials Science, Multidisciplinary
Yuzheng Wang, Xiaoxu Wang, Laishi Li, Yusheng Wu
Summary: Doping of B and Y ions in TiO2 nanoparticles can enhance their properties by reducing crystallite size, improving specific surface area, and broadening the optical response range. Density of states and charge density calculations indicate that B doping redistributes electrons in the O 2p state, promoting the ability of surrounding Ti 3d and Y 5d states to capture electrons.
Article
Multidisciplinary Sciences
Mohammad Humaun Kabir, Humayra Ibrahim, Sikder Ashikuzzaman Ayon, Md. Muktadir Billah, Sharif Neaz
Summary: In this study, undoped and Fe-doped CuO thin films were prepared using the sol-gel spin coating technique. It was found that Fe doping improved the particle size and distribution, and tuned the bandgap of the films. In addition, the films showed good optical properties and antifungal activity.
Article
Physics, Multidisciplinary
Ahmed Kadari, Khaled Aissaoui, Intesar A. El-Mesady
Summary: Zn2SnO4 nanostructures doped with different rare earth elements (Dy3+, Sm3+, Yb2+, Eu3+ and Gd2+) were synthesized using sol-gel method. The crystallographic nature of the prepared materials was confirmed by X-Rays Diffraction (XRD). The particle sizes were calculated to be approximately 24 nm. The chemical bond types were identified through Fourier Transform Infrared spectroscopy (FTIR). The dopants affected the absorbance spectra, with a decrease in energy band gap (E (opt)) from 3.89 eV to 2.80 eV for direct transitions and a range of 3.93 to 2.25 eV for indirect transitions. The Urbach energies (E-U) were found to be within the range 0.70-0.42 eV. These results suggest that the suggested dopants can be utilized in the correct form in industrial applications.
Article
Chemistry, Physical
H. V. S. Pessoni, A. Franco Jr
Summary: The influence of structural defects on the magnetic properties of Co-doped ZnO polycrystalline ceramics was investigated, and it was found that with increasing Co concentration, the saturation magnetization decreased and changed to antiferromagnetic and paramagnetic ordering. Additionally, the high-temperature sintering process resulted in the increase of antiferromagnetic ordering due to the homogenous dilution of Co ions in the ZnO structure.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
N. H. Alonizan
Summary: Pure and Al-doped ZnO nanoparticles were synthesized using hydrothermal technique. The structural and phase analysis showed that Al doping increased the crystallite size and caused compressive stress formation in the material network. Other studies investigated the impact of different Al doping ratios on powder morphology, optical bandgap, and electronic defects localized in the material band-gap.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Khushboo Punia, Ganesh Lal, Saurabh Dalela, Satya Narain Dolia, Parvez Ahmad Alvi, Shiv K. Barbar, Kunal B. Modi, Sudhish Kumar
Summary: The study reveals the impact of Gd substitution on the structural, optical, photoluminescence, and magnetic properties of Zn1-xGdxO nanocrystals, including crystallinity, band gap energy, emission characteristics, and magnetization behavior. Gd substitution results in a reduction in the average crystallite size of Zn1-xGdxO nanocrystals and confirms the coexistence of paramagnetic and weak ferromagnetic ordering in the presence of Gd.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Materials Science, Multidisciplinary
Pragya Joshi, Sudeep Tiwari, Khushboo Punia, Sudhish Kumar
Summary: This work investigates the synthesis, structure, optical, electrical and magnetic properties of undoped and doped TiO2 nanoparticles. The results reveal that the doped TiO2 nanoparticles have high crystallinity and a narrow size distribution, with a red shift in the band gap. Defects and oxygen vacancies are observed in these nanoparticles, which exhibit semiconductor and weak ferromagnetic properties.
Article
Biochemistry & Molecular Biology
Sri Suryani, Asni Damayanti, Heryanto Heryanto, Roni Rahmat, Syarifuddin Syarifuddin, Dahlang Tahir
Summary: ZnO/chitosan coated wool fabric with different pH (5, 7, and 9) showed self-cleaning properties. The fabric samples were irradiated with UVA-UVB lamps for 15 hours with dye stains. The ZnO/chitosan composites were characterized using XRD, FTIR, and UV-Visible spectroscopy. The samples with pH 9 demonstrated the best self-cleaning performance due to the smallest crystallite size, highest bandgap, and maximum Delta (LO-TO) distance.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2023)
Article
Physics, Multidisciplinary
P. Harshapriya, Pawandeep Kaur, Deepak Basandrai
Summary: La-Ag doped BiFeO3 nanoparticles were synthesized and their structural, morphological, magnetic, optical, and microwave absorption properties were investigated. The samples exhibited a perovskite rhombohedral structure along with a dilute phase of Bi2Fe4O9. The optical band gap decreased for La-Ag doped BFO compared to pure BFO. The crystals had an irregular shape and size. The vibrating sample magnetometer revealed increased magnetization and coercivity for La-Ag doped BFO. La-Ag doped BFO also showed improved electromagnetic interference shielding effectiveness.
CHINESE JOURNAL OF PHYSICS
(2023)
Article
Materials Science, Ceramics
Moniruzzaman Jamal, Md Muktadir Billah, Sikder Ashikuzzaman Ayon
Summary: The synthesis and characterization of pristine and fluorine-doped copper oxide nanoparticles were studied. The doping of fluorine resulted in a decrease in crystallinity, crystallite size, and phase stability of copper oxide. Morphological analysis showed fused irregularly shaped particles and a reduction in particle size with doping. Photoluminescence study revealed an impact of fluorine doping on defect concentration, while UV-visible spectroscopy indicated a decrease in optical band gap. Both pure and doped copper oxide nanoparticles exhibited room temperature ferromagnetism with slight paramagnetic contribution. These interesting opto-structural and magnetic properties make fluorine-doped copper oxide nanoparticles promising candidates for various applications such as solar cells, magnetic storage devices, magnetic sensors, photocatalysis, photonics, and spintronics.
CERAMICS INTERNATIONAL
(2023)
Article
Physics, Applied
V. E. Nefedova, S. Frohlich, F. Navarrete, N. Tancogne-Dejean, D. Franz, A. Hamdou, S. Kaassamani, D. Gauthier, R. Nicolas, G. Jargot, M. Hanna, P. Georges, M. F. Ciappina, U. Thumm, W. Boutu, H. Merdji
Summary: Doping-induced defects in crystals enhance high-order harmonic generation (HHG) in the extreme ultraviolet (XUV) spectral region, leading to increased harmonic yield. Experimental and numerical simulation results show that doped magnesium oxide (MgO) has a higher XUV high harmonic yield compared to undoped MgO and maintains the crystal's symmetry.
APPLIED PHYSICS LETTERS
(2021)
Article
Materials Science, Multidisciplinary
Endris Taju Seid, Francis B. Dejene
Summary: Doped ZnO nanoparticles were synthesized using sol-gel method with simultaneous incorporation of Gallium (Ga) and Indium (In). XRD analysis indicated pure hexagonal wurtzite structure, and different dopant ratios led to significant variations in crystallite sizes. Co-doped samples exhibited higher reflectance in the visible region compared to undoped and single doped samples.
MATERIALS TODAY COMMUNICATIONS
(2021)
Article
Physics, Multidisciplinary
T. Alshahrani, Mohd Shkir, Aslam Khan, Ahmed M. El-Toni, Anees A. Ansari, M. A. Shar, Hamid Ghaithan, S. AlFaify, Tien Dai Nguyen, Vasudeva Reddy Minnam Reddy
Summary: In this study, Yttrium oxide (Y2O3) films were developed at various substrate temperatures using a low-cost facile jet nebulizer spray pyrolysis technique. The films exhibited a polycrystalline structure with fine nanograins formation. The analysis showed that the developed Al/Y2O3/n-Si heterojunction diode has potential applications in optoelectronic devices.
CHINESE JOURNAL OF PHYSICS
(2022)
Article
Materials Science, Multidisciplinary
Aniqa Jadoon, Zarshad Ali, W. A. Farooq, Farman Ali, Gareth J. Price, Shaista Taimur, M. Atif, Mona A. AlMutairi, Nafeesah Yaqub, Saira Bibi
Summary: This study explores the feasibility of using 3-aminopropyl triethoxysilane (3-APTES) crosslinked chitosan (Ch)/graphene oxide (GO) membranes for the adsorptive removal of anionic dyes from aqueous medium. The membranes were successfully fabricated through solution casting technique. Strong interactions among the matrix (chitosan), 3-APTES, polyvinylpyrrolidone (PVP) and GO were confirmed by infrared spectroscopy. The addition of graphene oxide improved the thermal stability of the chitosan. The adsorption characteristics of the membranes were evaluated using Congo red (CR) dye, and the results showed that the membranes were capable of removing 80% of CR from aqueous medium following second order kinetics. This study highlights the potential of green membranes for various flow systems.
CURRENT APPLIED PHYSICS
(2022)
Article
Mechanics
Khalid Saeed, Alistair McIlhagger, Eileen Harkin-Jones, Cormac McGarrigle, Dorian Dixon, Muhammad Ali Shar, Alison McMillan, Edward Archer
Summary: This study investigates the mechanical properties of continuous carbon fiber reinforced polyamide polymer composite samples. The strength and stiffness of the samples increase with the increase in fiber volume content. The synergy between short and continuous carbon fiber also improves the tensile properties. The microstructure analysis shows a strong correlation between the mechanical properties and the microstructure. Acid digestion method and micro-computed tomography are used to quantify the effects of voids and confirm the impact of hot pressing on the samples.
COMPOSITE STRUCTURES
(2022)
Correction
Thermodynamics
Azeem Shahzad, Bushra Habib, Muhammad Nadeem, Muhammad Kamran, Hijaz Ahmad, Muhammad Atif, Shafiq Ahmad
Article
Optics
A. M. El-naggar, Zein K. Heiba, Mohamed Bakr Mohamed, A. M. Kamal, G. Lakshminarayana, Muhammad Ali Shar
Summary: In this study, a blend of Poly (vinyl alcohol), polyethylene glycol, and nano SnS2/Y was fabricated using thermolysis and casting procedures. The nanoscale properties of the filler SnS2/Y were examined through various techniques including XRD, SEM, TEM, and EDS. The results showed that loading the PVA/PEG blend with SnS2/Y had a significant influence on the structure and optical properties, with the fluorescence intensity and color depending on the ratios of the nanofiller.
Article
Chemistry, Multidisciplinary
Tariq Munir, Muhammad Imran, Saima Muzammil, Abdul Ahad Hussain, Muhammad Fakhar-E Alain, Arslan Mahmood, Amjad Sohail, Muhammad Atif, Sulman Shafeeq, Muhammad Afzal
Summary: Graphene oxide nanoparticles (GO-NPs) with excellent physicochemical and biological properties show prominent antimicrobial activities. Coating agents improve the crystallite size, surface morphology, and optical properties of GO-NPs. In vitro experiments demonstrate that polymer-coated GO-NPs exhibit enhanced antimicrobial activities, suggesting their potential application in wound healing.
ARABIAN JOURNAL OF CHEMISTRY
(2022)
Article
Multidisciplinary Sciences
Ghulam Abbas, Akhtar Rasul, M. Fakhar-e-Alam, Malik Saadullah, Saima Muzammil, Omeira Iqbal, M. Atif, Muhammad Hanif, Shahid Shah, Shafiq Ahmad, Sulman Shafeeq, Muhammad Afzal
Summary: The study aimed to formulate nanoparticles of thiolated chitosan with enhanced mucoadhesion and controlled release behavior. Stable nanoparticles were prepared using an ionic gelation method, and their adhesion, swelling, and toxicity were evaluated. Drug release studies of non-thiolated and thiolated nanoparticles showed that the thiolated nanoparticles exhibited better controlled release. Animal experiments confirmed the superior pharmacokinetic properties of the thiolated nanoparticles compared to the marketed formulation.
JOURNAL OF KING SAUD UNIVERSITY SCIENCE
(2022)
Article
Physics, Condensed Matter
Muhammad Zubair, Naeem-ur-Ahmed, Waqar Azeem, Hassan Afzal, Saeed Ahmad Buzdar, Waqar Ahmed, Muhammad Asad, Ghias Mahmood
Summary: Nanostructured copper sulfide (CuS) and iron (Fe) doped CuS materials were synthesized using a facile chemical co-precipitation route with ammonia as a capping agent. The structural, morphological, and electrical behavior of the materials were evaluated using XRD, SEM, EDS, FTIR, and two probe I-V method. XRD analysis showed a cubic phase of CuS with peak broadening observed upon Fe incorporation. FTIR analysis confirmed Cu-S linkage and the presence of other functional groups. The study of I-V characteristics revealed an increase in electric current, which could be attributed to an increase in Fe content, temperature, and voltage.
PHYSICA B-CONDENSED MATTER
(2023)
Article
Crystallography
Muhammad Zubair, Muhammad Shahid Rafique, Afshan Khalid, Tahir Yaqub, Muhammad Furqan Shahid, Suliman Yousef Alomar, Muhammad Ali Shar
Summary: Fructose-stabilized gold, silver, and gold-silver bimetallic colloids were synthesized using the atmospheric pressure microplasma technique. The formation of gold-silver bimetallic alloy particles was confirmed through X-Ray Diffraction patterns, FE-SEM images, and EDS spectra. The size distribution of gold-silver bimetallic colloids was narrow and compatible with the size of influenza viruses, leading to an effective bio-conjunction. The antiviral activity of the bimetallic nanostructures was significantly improved compared to monometallic AuNPs and AgNPs, demonstrating their high antiviral efficacy.
Article
Materials Science, Multidisciplinary
Mohamed S. Abdo, Ashraf Maher, Ahmed Fouly, Saud M. Almotairy, Muhammad A. Shar, Hany S. Abdo
Summary: This study investigates the performance of different shapes of antennas in microwave ablation (MWA) for the treatment of hepatocellular carcinoma (HC). A numerical model was established to examine specific absorption rate (SAR), temperature distribution, and coefficient of reflection. The findings of the study can aid in determining the optimal parameters for the highest effectiveness of MWA in the treatment of early-stage HC with minimal invasiveness and collateral harm.
Article
Multidisciplinary Sciences
Tariq Munir, Arslan Mahmood, Shafaq Fatima, Amjad Sohail, Muhammad Fakhar-e-Alam, Muhammad Atif, Noman Rafaqat
Summary: Nanostructured materials play a crucial role in electronic applications and device performance enhancement. Cobalt sulfide, as a transition metal sulfide, has attracted considerable interest in research. In this study, (Al and Zn) doped cobalt sulfide nanoparticles were successfully fabricated using a facile co-precipitation method, and their structural, optical, and electrical properties were analyzed.
JOURNAL OF KING SAUD UNIVERSITY SCIENCE
(2023)
Article
Thermodynamics
Salah Tlili, Abdelmadjid Kaddour, Oumr A. Osra, Mustafa Bayram, Muhammad Atif, Hijaz Ahmad, Younes Menni
Summary: This study determined the coldest days in the Djelfa region, Algeria in 2022 by analyzing astronomical and climatic data. The study examined the impact of various factors on the output of a renewable energy converter, including solar radiation intensity, air temperature, and different glass coverings. The findings contribute to energy-efficient designs and renewable integration, aiding in sustainable urban development.
Article
Thermodynamics
Noureddine Kaid, Mustafa Bayram, Jihad Asad, Muhammad Atif, Muataz S. Alhassan, Houari Ameur, Hijaz Ahmad, Younes Menni
Summary: This research paper presents a highly significant study on a new type of static mixer, which employs advanced numerical simulations to assess its mixing efficiency. The findings reveal detailed insights into flow behavior and mixing performance and contribute to applied mechanics and the optimization of industrial mixing processes.
Article
Chemistry, Multidisciplinary
Abdul Raouf Malik, Muhammad Hammad Aziz, Muhammad Atif, Muhammad Sultan Irshad, Hafeez Ullah, Tuan Nguyen Gia, Hijaz Ahmed, Shafiq Ahmad, Thongchai Botmart
Summary: Nanobiotechnology combined with green science holds great potential for the development of novel and important products that benefit human health, climate, and industries. Green synthesized nickel ferrites nanoparticles using biogenic lime peel extract have been investigated and shown to have multiple efficacies, including anticancer effects and antioxidant and antibacterial activities.
JOURNAL OF SAUDI CHEMICAL SOCIETY
(2022)