Article
Chemistry, Medicinal
Radu Cercel, Mirela Paraschiv, Cristina Stefania Florica, Monica Daescu, Adelina Udrescu, Romeo C. Ciobanu, Cristina Schreiner, Mihaela Baibarac
Summary: New aspects of the photodegradation of ampicillin are explored using photoluminescence, Raman scattering, and FTIR spectroscopy. The photoluminescence studies reveal that the presence of excipients and an alkaline medium amplifies the photodegradation of ampicillin. The emergence of new compounds during the photodegradation process is highlighted by changes in the UV-VIS spectra, absorbance ratio of IR bands, and Raman line intensities. A chemical mechanism for the photodegradation of ampicillin in an alkaline medium is proposed.
Article
Chemistry, Physical
J. Al Boukhari, Z. Bitar, A. A. Azab, R. Awad, M. Rekaby
Summary: In this study, low-cost chloride precursors were used to synthesize pure and codoped NiO nanoparticles through a facile coprecipitation method. The thermal, structural, morphological, optical, and magnetic properties of the samples were found to be strongly dependent on the reaction temperature and codoping. The codoped samples with a doping concentration higher than 4% showed linear M-H curves, indicating their ferromagnetic behavior.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Biochemistry & Molecular Biology
N'ghaya Toulbe, Ion Smaranda, Catalin Negrila, Cristina Bartha, Corina M. Manta, Mihaela Baibarac
Summary: The effect of sodium thiosulfate (ST) on the photodegradation of azathioprine (AZA) was studied using various spectroscopic techniques. The results showed the emergence of new compounds during the photodegradation process, which were confirmed through different experimental methods.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Spectroscopy
Reshma P. Radhakrishnan, Arun K. Prasad
Summary: In this study, a multi-modal approach was used to investigate the sensing mechanism of NH3 gas by V2O5 nanoparticles in ambient air. The results showed that V2O5 nanoparticles with an average size of 49 nm exhibited a superior sensor response towards 1 ppm of NH3 gas. The presence of NH3 induced electron doping, resulting in conduction band filling and an increase in the optical band gap. The vanadyl oxygen site was found to be the most active in the sensing process.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2023)
Article
Materials Science, Multidisciplinary
T. S. Soliman, M. F. Zaki, M. M. Hessien, Sh. I. Elkalashy
Summary: This study aimed to synthesize BaTiO3 nanocrystalline particles using the tartrate precursor process, and then prepare nanocomposite films with PVA. Analysis using XRD and FTIR showed complex interactions between BaTiO3 nanoparticles and the PVA matrix. As the concentration of BaTiO3 nanoparticles in the PVA matrix increased, the optical band gap decreased while the Urbach energy increased.
Article
Chemistry, Physical
Nur Adyani Zaini, Syafawati Nadiah Mohamed, Zakiah Mohamed
Summary: Er-V co-doped borate glasses embedded with Ag NPs were prepared for potential optical fiber and glass laser applications. The addition of vanadium led to changes in optical properties, with a decrease in optical band gap, an increase in Urbach energy, and an increase in refractive index. Under 800 nm excitation, three distinct emission bands were observed. The study suggests that these glasses may have practical applications in the field.
Article
Acoustics
Silvia Perez-Rafael, Guillem Ferreres, Rudolf W. Kessler, Waltraud Kessler, Jeniffer Blair, Garima Rathee, Angela Gala Morena, Tzanko Tzanov
Summary: As the most abundant renewable aromatic polymer on the planet, lignin is gaining growing interest in replacing petroleum-based chemicals and products. However, only <5% of industrial lignin waste is revalorized in its macromolecular form as additives, stabilizing agents or dispersant and surfactants. In this study, an environmentally-friendly continuous sonochemical nanotransformation process was implemented to obtain highly concentrated lignin nanoparticles (LigNPs) dispersions for added-value material applications.
ULTRASONICS SONOCHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Rongfu Zhou, Litian Lin, Hongting Zhao, Tingting Deng, Jingwei Li
Summary: This study designed and synthesized Ca8Mg3Al2Si7O28 phosphors doped with Ce3+ and Eu2+ for highly sensitive optical thermometry. Analysis of the structure and luminescent properties showed that the emission color can be tuned at different doping levels and temperatures for temperature measurement. The ratiometric fluorescence intensity of Eu2+ to Ce3+ provided sensitivity to temperature readout.
MATERIALS CHEMISTRY FRONTIERS
(2021)
Article
Chemistry, Physical
K. Karoui, A. Ben Rhaiem, F. Jemni
Summary: The structural, optical, and electrical properties of Li2M(WO4)(2) (M = Ni, Cu, Co) samples were evaluated in this study. Solid-state reaction method was used for synthesis. Structural analysis was done via Rietveld refinement of XRD patterns, with Raman spectroscopy revealing the presence of WO6 vibration modes. Optical properties were studied using UV-Vis spectroscopy, while thermal properties showed peaks at specific temperatures for each compound. Electrical and dielectric properties were also examined, with conduction mechanisms determined in each phase.
Article
Materials Science, Ceramics
U. C. Matur, I. P. Duru, D. Akcan
Summary: In this study, Mg-doped zinc oxide (MZO) thin films were deposited by sol-gel dip coating method to improve their physical properties. The structural and optical properties were investigated using XRD analysis, UV-VIS spectroscopy, and PL spectroscopy. The electronic properties were determined using the DFTB+ method. The experimental results were compared with theoretical calculations.
CERAMICS INTERNATIONAL
(2022)
Article
Materials Science, Multidisciplinary
Parul Sharma, Prabhakar Singh, Kamni
Summary: In this study, Nd3+ doped KSrVO4 phosphor was synthesized via combustion synthesis route, and its lattice parameters, morphology, and elemental analysis were investigated. The experiment revealed that nanophosphors doped with 0.05mol% Nd3+ exhibited the strongest emission intensity, suggesting potential use in display applications.
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS
(2022)
Article
Nanoscience & Nanotechnology
Piyush Rajput, M. P. Deshpande, Hiteshkumar R. Bhoi, S. H. Chaki, Swati J. Pandya, Manish Mishra, Vasant Sathe, Suman Das, Dhermendra K. Tiwari, Sandip V. Bhatt
Summary: In this study, pure and La-doped titanium dioxide nanoparticles were synthesized using the chemical precipitation method. The samples were characterized by EDAX and XRD analysis, revealing the stoichiometry and crystalline phase of the nanoparticles. The presence of La dopant affected the morphology, optical properties, and antibacterial activity of the TiO2 nanoparticles.
Article
Environmental Sciences
S. Tamilselvan, R. M. Soniya, R. Vasantharaja, M. Kannan, S. Supriya, B. Prabhu Dass Batvari, T. Ramesh, K. Govindaraju
Summary: This study investigated a simple silver nanoparticle that can be used for the qualitative and quantitative sensing of heavy metal ions in aqueous solutions. The particles exhibited changes in their UV-vis absorption spectrum, indicating the presence of different metal ions.
ENVIRONMENTAL RESEARCH
(2022)
Article
Chemistry, Physical
H. K. Mallick, Yajun Zhang, Jagabandhu Pradhan, M. P. K. Sahoo, A. K. Pattanaik
Summary: Traditionally, dopant concentration variation was believed to be the primary factor in activating and modulating the optical properties of semiconducting oxides, particularly the band gap. However, this work shows that secondary factors such as particle size and oxygen vacancy concentration also play a decisive role in determining the nature of the band gap. The study aims to resolve the longstanding controversy about the band gap in Al doped SnO2, demonstrating that the band gap increases with Al doping, among other findings.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Crystallography
Nada Al Taisan, Shalendra Kumar, Adil Alshoaibi
Summary: In this paper, the synthesis and characterization of pure and TM (Mn, Cr) doped BiFeO3 nanoparticles using the sol-gel technique were reported. The nanoparticle structure presented a rhombohedral distorted perovskite structure with R3c space group, along with a minor phase of Bi2Fe4O9. TM doping resulted in a decrease in lattice parameters and particle size. The bandgap was found to decrease with TM doping, while the dielectric constant and ac conductivity increased.
Article
Physics, Applied
Walid Malaeb, Hadi Basma, M. M. E. Barakat, Ramadan Awad
JOURNAL OF SUPERCONDUCTIVITY AND NOVEL MAGNETISM
(2017)
Article
Physics, Applied
W. Malaeb, H. Basma, R. Awad, T. Hibino, Y. Kamihara
JOURNAL OF SUPERCONDUCTIVITY AND NOVEL MAGNETISM
(2019)
Article
Physics, Applied
S. Rmeid, H. Basma, M. Roumie, F. Elhaj Hassan, R. Awad
JOURNAL OF SUPERCONDUCTIVITY AND NOVEL MAGNETISM
(2019)
Article
Materials Science, Multidisciplinary
H. Basma, H. T. Rahal, F. Al-Mokdad, M. Romie, R. Awad
MATERIALS RESEARCH EXPRESS
(2019)
Article
Materials Science, Multidisciplinary
H. AbuHlaiwa, H. Basma, M. Rekaby, R. Awad
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2019)
Article
Physics, Applied
H. AbuHlaiwa, H. Basma, M. Rekaby, M. Roumie, R. Awad
JOURNAL OF LOW TEMPERATURE PHYSICS
(2020)
Article
Crystallography
A. Srour, H. Basma, S. Noureldeen, W. Malaeb, R. Awad
Summary: The (BaSnO3)(x)/Cu0.5Tl0.5Ba2Ca2Cu3O10-delta superconducting composites were prepared by solid-state reaction technique, with the investigation conducted on crystalline structure and superconducting transition temperature using XRD and dc-electrical resistivity measurements. ESR measurements at different temperatures revealed a single asymmetric line dominated by Cu2+ ions. The results show that the contribution of delocalized electrons from Cu2+ ions is significant for high addition of nanoparticles, and the number of spins and activation energy were enhanced with the addition of BaSnO3.
Article
Materials Science, Ceramics
W. Chehade, H. Basma, A. M. Abdallah, R. Sayed Hassan, R. Awad
Summary: This study presents the preparation and characterization of novel nanocomposites, confirming their high purity and crystallinity through various techniques such as XRD, TEM, UV-vis, and XPS. The materials showed well-dispersed spherical nanoparticles and soft ferromagnetic behavior, making them suitable for potential applications in photocatalysis.
CERAMICS INTERNATIONAL
(2022)
Article
Materials Science, Multidisciplinary
H. Basma, H. T. Rahal, R. Awad
Summary: Ba1-xBixFe12O19 nanoparticles were synthesized by chemical co-precipitation method, showing hexagonal structure with small crystallite size. FTIR analysis detected specific vibration bands. Bi3+ substitution enhanced magnetic properties while inducing changes in structural parameters.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
H. Basma, J. Al Boukhari, M. Abd Al Nabi, A. Aridi, R. Sayed Hassan, D. Naoufal, M. Roumie, R. Awad
Summary: This study reports the characterization of Nanosized Ni0.5Zn0.5RuxFe2-xO4 prepared using the wet chemical coprecipitation method. The results show an increase in particle size with high Ru3+ doping and successful substitution of Fe3+ with Ru3+ ions. Furthermore, the Ru3+ doping perturbs the band structure, affecting the photoluminescence behavior.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2022)
Article
Physics, Applied
S. Abbas, H. Basma, R. Awad, M. Matar
Summary: The effect of CdMnO addition on the physical properties of Bi-2212 superconductors was investigated. The addition led to changes in lattice parameters, enhancement of grain connectivity, shift in wave number positions, and improvement of superconducting properties. X-ray photoelectron emission analysis revealed a correlation between the variations in superconducting properties and the dynamics of cationic equilibrium reactions.
JOURNAL OF LOW TEMPERATURE PHYSICS
(2022)
Article
Materials Science, Multidisciplinary
M. Rabaa, H. Basma, Ramy. M. Moussa, R. Awad
Summary: In this study, nanoparticles of (Mg1/3Ni1/3Co1/3)Fe2-XGdXO4 were synthesized and characterized, with x = 0.00, 0.02, and 0.08 wt%, using the wet co-precipitation method. XRD and TEM confirmed the formation of nano-spinel ferrite. The crystallite size decreased due to Gd3+ substitution-induced microstrain, while the lattice parameter increased. XPS measurements verified the elemental composition, valency, and cationic distribution, while FTIR in combination with XPS estimated the force constants, elasticity parameters, and Debye temperature. Vickers microhardness measurements showed an enhancement in Young's modulus with Gd3+ doping.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2023)
Article
Physics, Multidisciplinary
H. Basma, F. Al-Mokdad, R. Awad
JORDAN JOURNAL OF PHYSICS
(2020)
Proceedings Paper
Physics, Applied
H. Basma, S. Isber, S. Noureldeen, M. Anas, R. Awad
FRONTIERS IN THEORETICAL AND APPLIED PHYSICS/UAE 2017 (FTAPS 2017)
(2017)