Article
Multidisciplinary Sciences
Nasser Mohammed Hosny, Islam Gomaa, Maryam G. Elmahgary, Medhat A. Ibrahim
Summary: Carbon doped ZnO nanoparticles were synthesized and characterized in this study. The results showed that the synthesized ZnO nanoparticles had a hexagonal 2D structure with a layer thickness of 25 nm and an optical band gap of 2.9 eV. Under UV irradiation, the ZnO nanoparticles exhibited excellent photocatalytic degradation performance towards both anionic and cationic dyes.
SCIENTIFIC REPORTS
(2023)
Article
Chemistry, Applied
Baskaran Palanivel, Romulo R. Macadangdang Jr, Md Shahadat Hossain, Fahad A. Alharthi, Mohanraj Kumar, Jih-Hsing Chang, Sreedevi Gedi
Summary: In this work, a Gd/La@ZnO nanoflower photocatalyst was successfully synthesized via co-precipitation method and used for the degradation of rhodamine B and tetracycline under direct sunlight irradiation. The introduction of rare earth elements extended the optical absorption wavelength of ZnO from the UV region to the visible-light region. The co-doped ZnO nanoflower showed excellent degradation efficiency and a lower charge recombination efficiency compared to pure ZnO.
JOURNAL OF RARE EARTHS
(2023)
Article
Materials Science, Multidisciplinary
Hai-xia Liu, Meng-yuan Teng, Xu-guang Wei, Tian-duo Li, Zai-yong Jiang, Qing-fen Niu, Xu-ping Wang
Summary: Zinc acetate is used as a raw material to synthesize zinc oxide by controlling the amount of citric acid added in a hot solvent. The morphology of the zinc oxide is significantly influenced by the amount of citric acid added. The photocatalytic properties of zinc oxide vary with the different amounts of citric acid added, with active crystal faces increasing catalytic activity.
INTERNATIONAL JOURNAL OF MINERALS METALLURGY AND MATERIALS
(2021)
Article
Engineering, Environmental
Mohsen Jalali, Mahdi Jalali, Vasileios Antoniadis
Summary: This study investigates the effects of different amendments and low-molecular-weight organic acids on the release of potentially toxic elements (PTEs) from soils. The highest release of PTEs was observed with citric acid, followed by oxalic and malic acids. The addition of poultry manure was found to be the most environmentally friendly amendment. The results highlight the importance of considering cadmium (Cd) in order to prevent environmental pollution.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Article
Engineering, Environmental
Jing Liu, Hanlu Shi, Carmen Sans, Lei Sun, Xiangjuan Yuan, Fei Pan, Dongsheng Xia
Summary: Ag2O-ZnO@CNx catalysts were fabricated and used for visible-light-driven photocatalytic ozonation of oxalic acid. The addition of Ag2O-ZnO improved the photocatalytic performance and the catalyst showed satisfactory reusability.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Engineering, Chemical
Zambaga Otgonbayar, Won-Chun Oh
Summary: This study designs a ternary nanomaterial structure containing a quaternary chalcogenide nanocomposite to address the deficiencies in poor semiconductor materials for CO2 reduction. The ternary photocatalyst, AgFeNi2S4-Graphene-ZnO, shows high levels of CO2 reduction to methanol due to the improved charge transfer between the components. The stability and recyclability of the photocatalysts were also determined.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Materials Science, Multidisciplinary
Marie Le Pivert, Hongri Suo, Gang Tang, Han Qiao, Zhicheng Zhao, Nathan Martin, Chongxuan Liu, Yamin Leprince-Wang
Summary: In this study, iron oxide cocatalysts were successfully deposited on the surface of ZnO nanostructures to extend the photocatalyst's absorption spectral range and enhance photocatalytic efficiency. An optimal deposition concentration of 0.06% iron led to an 11% improvement in Methyl Orange photocatalytic degradation under natural sunlight. Photocorrosion damages were observed under a powerful UV light source, with different effects on ZnO regions covered by iron oxide and uncovered regions.
MATERIALS CHEMISTRY AND PHYSICS
(2022)
Article
Environmental Sciences
Jianhao Yang, Xiaoxiao Liu, Caiyun Fei, Hongjuan Lu, Youhua Ma, Zhongwen Ma, Wenling Ye
Summary: Low-molecular-weight organic acids (LMWOAs) are important components of rice root exudates and a significant source of soil organic carbon. This study investigated the effects of three typical LMWOAs (acetic acid, oxalic acid, and citric acid) on the mobilization of arsenic (As) in the rhizosphere of paddy soils. The results showed that acetic acid and oxalic acid inhibited the mobilization of As, while citric acid promoted its release through solubilization of Fe/Mn minerals.
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
(2023)
Article
Chemistry, Multidisciplinary
Xianyou Sun, Shuqi Zhou, Yanchi Zhang, Chiyu Ma, Yanjie Hu, Shichao Tian, Xinyi Wang, Liubing Kong, Zhuoru Huang, Tao Liang, Hao Wan, Ping Wang
Summary: Urolithiasis is a common urinary system disease, and this study successfully develops a method for simultaneous detection of citric acid and oxalic acid in urine using dual-spectral analysis and biomimetic peroxidase utilization. By employing bovine serum albumin and modified copper nanoclusters as biomimetic peroxidases, interference is effectively reduced and quantification is achieved. The study also introduces a fully automated urine analyzer for efficient urine sample handling and identification.
Article
Materials Science, Multidisciplinary
Sarika Singh
Summary: Spherical-shaped ZnO nanoparticles with an average size of 10 nm were synthesized, and Ag/ZnO nanocrystals were prepared by loading metallic silver nanoparticles. The results showed that the appropriate amount of Ag loading shifted the band gap of ZnO, resulting in improved photocatalytic performance.
MATERIALS TODAY COMMUNICATIONS
(2022)
Article
Environmental Sciences
Debika Devi Thongam, Harsh Chaturvedi
Summary: This study overcomes the challenges of photocatalytic water treatment by using natural sunlight active photocatalyst and reusing ZnO-coated face-mask fabric as a floating photocatalyst. The formation of unique morphological structures and the use of DMF as a solvent can enhance the degradation efficiency. The ZnO-coated face-mask fabric shows comparable degradation efficiency under natural sunlight compared to UV light-illuminated slurry system.
Article
Chemistry, Multidisciplinary
G. El Fidha, N. Bitri, F. Chaabouni, S. Acosta, F. Guell, C. Bittencourt, J. Casanova-Chafer, E. Llobet
Summary: Dysprosium-doped zinc oxide thin films were prepared and characterized using various techniques to analyze their structure, optical properties, and catalytic performance. The results showed that with increasing dysprosium doping, the bandgap energy values of the films decreased, leading to improved catalytic degradation efficiency.
Article
Chemistry, Physical
Sofia Henriques Ferreira, Maria Morais, Daniela Nunes, Maria Joao Oliveira, Ana Rovisco, Ana Pimentel, Hugo Aguas, Elvira Fortunato, Rodrigo Martins
Summary: In this study, porous zinc oxide nanostructures were synthesized successfully through a microwave hydrothermal process. The influence of different calcination temperatures on the properties of ZnO nanostructures was investigated, with the porous ZnO obtained at 700 degrees Celsius showing the highest photocatalytic activity in degrading rhodamine B. These results signify a significant step towards utilizing oxide semiconductors for degrading water pollutants under natural sunlight.
Article
Environmental Sciences
Md. Shoffikul Islam, Ziteng Song, Ruili Gao, Qingling Fu, Hongqing Hu
Summary: The use of biochar (BC) for heavy metal immobilization was found to be affected by low concentrations of tartaric acid, which increased immobilization, while higher concentrations of tartaric acid and oxalic acid led to increased mobilization of heavy metals.
ENVIRONMENTAL TECHNOLOGY
(2022)
Article
Construction & Building Technology
Jiaojiao Yang, Huagang Zhang, Tao Yu, Yong Zheng, Keke Sun
Summary: The study investigates the effects of adding modifiers, including citric acid, tartaric acid, sodium hexametaphosphate, sodium phosphate, and ethylene-vinyl acetate copolymer emulsion, to the sawdust-magnesium oxychloride cement composite (SMOCC). The results show that these modifiers delay the setting time, improve water resistance, and enhance the microstructure and hydration mechanism of SMOCC. However, EVA decreases the strength of SMOCC and has no significant effect on water resistance improvement.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Chemistry, Inorganic & Nuclear
A. M. Youssef, S. M. Yakout
Summary: New dielectric compositions composed of nanoparticles were synthesized and showed high dielectric constant and the ability to modify band gap energies.
JOURNAL OF SOLID STATE CHEMISTRY
(2022)
Article
Materials Science, Multidisciplinary
A. M. Youssef, S. M. Yakout
Summary: In this study, the optical, magnetic and electrical properties of nanostructured TiO2 semiconductor were investigated. The incorporation of Co2+, Mn2+ and Fe2+/(3+) ions into TiO2 lattice enhanced the electrical, magnetic and photocatalytic properties.
MATERIALS CHEMISTRY AND PHYSICS
(2022)
Article
Materials Science, Multidisciplinary
Mohammed Ahmed Wahba, Talaat A. Hameed, Walid Sharmoukh, Saad Mabrouk Yakout
Summary: The study synthesized CuO nanopowders with superparamagnetic, terahertz optical conductivity and dielectric constant properties, characterized by XRD and TEM. Codoping of different transition elements affected the optical properties of CuO, with Cu0.96V0.02Fe0.02O showing excellent intrinsic superparamagnetic behavior.
Article
Materials Science, Multidisciplinary
A. M. Youssef, S. M. Yakout
Summary: Advanced doping and binary doping techniques can enhance room temperature ferromagnetism and colossal dielectric permittivity of TiO2 materials. The synthesized compositions exhibit wide band gap energy and semiconducting behavior, with improved electrical conductivity and particle size reduction influenced by dopants.
Article
Materials Science, Multidisciplinary
A. M. Youssef, S. M. Yakout
Summary: This study investigates the optical, refractive index, electrical, dielectric, and solar photocatalytic properties of pure ZnO and Zn0.97-xCu0.03VxO (x = 0, 0.02, 0.04) compositions synthesized by coprecipitation method. The results show that the introduction of Cu and Cu/V ions has significant impacts on the morphology, optical properties, refractive index, electrical conductivity, dielectric properties, and solar photocatalytic efficiency of ZnO.
Article
Energy & Fuels
Talaat A. Hameed, Walid Sharmoukh, Badawi Anis, Ahmed M. Youssef
Summary: In this study, a twofold enhancement strategy using aluminum (Al) and graphene oxide (GO) was employed to improve the photocatalytic activity and diode performance of ZnO. The results showed that the Zn1-xAlxO-GO nanocomposite exhibited enhanced photocatalytic efficiency and removal efficiency. The introduction of Al also improved the rectification and shunt resistance of the Ag/n-Zn1-xAlxO-GO/p-Si/Al heterostructure diode, while decreasing the barrier height, ideality factor, and series resistance.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Article
Engineering, Electrical & Electronic
A. M. Youssef, S. M. Yakout
Summary: Tetra-doping by (Mn, Fe, Co, Ni) ions significantly enhanced the dielectric constant and ferromagnetic-superparamagnetic characteristics of monoclinic CuO structure. Nanocompositions of undoped CuO and CuO doped with various concentrations of (Mn, Fe, Co, Ni) ions were synthesized. The crystal structure analysis confirmed the pure single phase monoclinic CuO structure in all samples. The tetra-doping process resulted in the formation of homogeneous spherical nanoparticles and altered the optical properties of CuO.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2023)
Article
Materials Science, Multidisciplinary
A. M. Youssef, S. M. Yakout, Sahar M. Mousa
Summary: In this study, the multifunctional characteristics of pure and multidoped TiO2 semiconductor, including solar photocatalytic, dielectric constant and ac electrical conductivity, have been investigated. Different compositions of TiO2, Ti0.98Zr0.02O2, Ti0.96Zr0.02Y0.02O2, and Ti0.94Zr0.02Y0.02Sb0.02O2 were prepared and analyzed. The incorporation of Zr4+, Y3+, and Sb5+ ions into the TiO2 lattice resulted in morphological changes and optical effects, such as a red shift in the absorption edge and a decrease in the band gap energy. The Ti0.94Zr0.02Y0.02Sb0.02O2 composition exhibited high dielectric constant and ac electrical conductivity, as well as efficient solar photodegradation characteristics for 10 ppm Congo red.
Article
Engineering, Electrical & Electronic
S. M. Yakout, A. M. Youssef, Sahar M. Mousa
Summary: In this study, schulenbergite/CuO and pure ktenasite minerals were synthesized simply by adding sodium sulfide (Na2S) to a mixture of nanosized CuO powder dispersed into Zn(NO3)2·6H2O solution. The X-ray diffraction patterns confirmed the formation of schulenbergite/CuO mineral with ratios of 69:31% and 87/13% at different Na2S concentrations. Fourier-transform infrared (FTIR) analysis verified the composition of schulenbergite/CuO and pure ktenasite. Scanning electron microscope (SEM) images showed mixed grain structures of the synthesized samples. Optically, all samples exhibited high absorption ability for infrared-visible light wavelengths. The pure ktenasite mineral showed a giant dielectric constant value of approximately 1.3 x 10(6) at a frequency of 42 Hz, making it a potential material for energy storage applications.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2023)
Article
Chemistry, Inorganic & Nuclear
Arwa I. A. Elsharawy, S. M. Yakout, M. A. Wahba, Ayman A. Abdel-Shafi, M. Sh Khalil
Summary: Notable ferromagnetic features were observed in lightly multidoped Cu0.97Mn0.01Fe0.01Ni0.01O composition at room temperature. The synthesized compositions showed a high purity mono-phase of monoclinic CuO structure with no other impurities. The incorporation of transition metals resulted in the formation of long absorption tails and red shifts in the band gap energy of CuO. Cu0.97Mn0.01Fe0.01Ni0.01O exhibited a perfect ferromagnetic performance with high saturation magnetization and coercivity at room temperature.
SOLID STATE SCIENCES
(2023)
Article
Engineering, Chemical
Hala T. Handal, Walied A. A. Mohamed, Saad M. Yakout, Kamal R. Mahmoud, Hanan A. Mousa
Summary: This study develops a mixed metal oxide catalyst composed of RuO2 or RuO2/Ni(OH)(2) supported on TiO2 using the sol-gel method. The composite catalysts show tunable band gap of TiO2, doubled surface area, and a high level of defects. They exhibit high current density and dimensional stability in the water oxidation test, but lower photo electrochemical water splitting activity compared to TiO2.
ADVANCED POWDER TECHNOLOGY
(2023)
Article
Materials Science, Ceramics
S. M. Yakout, Arwa I. A. Elsharawy, M. A. Wahba, Ayman A. Abdel-Shafi, M. Sh Khalil
Summary: This study investigates the introduction of robust room temperature ferromagnetic properties in perovskite BaSnO3 using Zr and/or Mn, Fe or Co ions, which could be used for high performance information applications. Through the doping of ions, the morphology of BaSnO3 is improved from inhomogeneous large grains to well distributed small ones. X-ray analysis reveals a relationship between the ionic size of dopants and the crystal dimension of BaSnO3. Addition of Zr and/or Mn, Fe or Co ions also enhances the absorption capability of BaSnO3.
CERAMICS INTERNATIONAL
(2023)
Article
Chemistry, Inorganic & Nuclear
S. M. Yakout, M. A. Wahba, A. M. Youssef
Summary: The relative permittivity and photocatalytic properties of BaTi0.98M0.02O3 (M = V, Co, Mo) compositions were investigated. X-ray diffraction analysis confirmed the formation of tetragonal BaTiO3 phase for all samples. Scanning electron microscope images showed different grain shapes for each composition. The addition of V, Co and Mo ions reduced the UV band gap energy of BaTiO3 and enabled it to absorb visible light. The BaTi0.98Mo0.02O3 composition exhibited the highest photocatalytic performance due to various factors including high crystallinity and visible light absorption.
JOURNAL OF SOLID STATE CHEMISTRY
(2023)
Article
Materials Science, Multidisciplinary
A. M. Youssef, S. M. Yakout, M. A. Wahba
Summary: Gigantic relative permittivity and ac electrical conductivity characteristics were achieved in BaTiO3 by incorporating Cu2+ and Cu2+/W4+ ions. The XRD results confirmed the single-phase tetragonal structure of pure BaTiO3 powder. The formation of alpha-Ba2TiO4 phase with a ratio of 17-25% was observed in Cu doped and (Cu, W) codoped samples. The crystal analysis demonstrated the natural decay of the formed alpha-Ba2TiO4 phase over time or upon heating at high temperature.
MATERIALS CHEMISTRY AND PHYSICS
(2023)
Article
Materials Science, Multidisciplinary
S. M. Yakout, A. M. Youssef
Summary: In this study, CuS/SnS nanocomposites were synthesized for capacitive energy storage applications. The composites showed the formation of quantum dot and nanorod particles, and exhibited giant dielectric constant and ferromagnetic properties.
MATERIALS CHEMISTRY AND PHYSICS
(2023)
Article
Materials Science, Multidisciplinary
Yanbin Wang, Xinyou Huang, Ziqiu Cheng, Penghui Chen, Yuyang Chen, Junhao Ye, Haohong Chen, Zhenzhen Zhou, Denis Yu Kosyanov, Jiang Li
Summary: Uniform Al2O3-Ce:LuAG composite phosphor ceramics (CPCs) with excellent luminescent properties and thermal stability have been successfully synthesized in this study, showing great potential for application in solid-state laser lighting.
Article
Materials Science, Multidisciplinary
Syed Muhammad Ali Zaidi, Mazhar Ali Kalyar, Zulfiqar Ali Raza, Aayesha Shoukat, Rubaila Waseem, Muhammad Aslam
Summary: Polyvinyl alcohol (PVA) nanocomposite strips embedded with graphene nanosheets and copper-ferrite nanoparticles were synthesized using solution casting technique. Laser pulse irradiations were then applied to modify the structural, optical, and electrical properties of the strips, showing potential for optoelectronic devices.
Article
Materials Science, Multidisciplinary
Yunru Chen, Jialing Wu, Jiajia Wang, Shihui Ma, Hongwei Yu
Summary: This paper investigates the angular non-critical phase-matching second-harmonic-generation properties of Ba3(ZnB5O10)PO4 crystal and explores its potential applications in the output spectral regions.
Article
Materials Science, Multidisciplinary
Qun Jing, Menglin Zhu, Lu Li, Xu Ji, Haiming Duan, Henglei Chen, Ming-Hsien Lee
Summary: The paper introduces two new nonlinear optical materials, MZnPO4 (M = Rb, Cs), synthesized by cation substitution. These materials exhibit a honeycomb-like structure and show mild SHG responses with short absorption edges. The thermal properties, IR spectra, and theoretical calculations of the materials are also discussed.
Article
Materials Science, Multidisciplinary
Camila Ianhez-Pereira, Akhil Kuriakose, Ariano De Giovanni Rodrigues, Ana Luiza Costa Silva, Ottavia Jedrkiewicz, Monica Bollani, Marcio Peron Franco de Godoy
Summary: This study aims to evaluate the crystalline changes induced by ultrafast laser micromachining on manganese oxide thin films using micro-Raman spectroscopy. The results show that laser-writing is effective in locally modifying low-crystallinity films and increasing crystallite sizes, highlighting an interesting approach to evaluate laser-induced structural modifications on metal oxide thin films.
Article
Materials Science, Multidisciplinary
Kamal Bansal, Neeraj Kumar Mishra, Ibrahim Abdullahi, Param Jeet Singh, Mohit Tyagi, Sukhpal Singh
Summary: A novel Sm3+ activated oxyfluoride glass was synthesized and its structure and properties were analyzed. The glass showed potential applications in lasers, optical temperature sensing, and high-energy scintillators.
Article
Materials Science, Multidisciplinary
Xingjian Wang, Zhixu Wu, Jiawei Zhu, Yubin Kang, Mengqiang Cai, Yong Xia, Hui Deng
Summary: Antimony sulfide (Sb2S3) has been investigated as a promising material for visible light photodetectors due to its non-toxicity, stability, and high absorption coefficient. In this study, we systematically explored the impact of key parameters on the performance of Sb2S3 devices using simulation and successfully fabricated self-powered photodetectors with high responsivity and specific detectivity. Furthermore, we demonstrated the application of the Sb2S3 detector in a scanning imaging system, showcasing its potential for developing new types of visible light detectors and imaging systems.
Article
Materials Science, Multidisciplinary
O. I. Sallam, R. M. Ahmed
Summary: The 20NaF-60P2O5-20Na2O fluorophosphate glass systems doped with 3 wt% of CoO and NiO were investigated for their optical parameters before and after gamma irradiation. The presence of defects within the glass network and the addition of transition metals were found to affect the properties of the composites. After irradiation, a red shift was observed in the dissipation factor spectrum. The energy lost at the surface of the composites was larger than the energy lost within the constituent materials. All investigated composites showed insulating behavior and exhibited increased nonlinear optical parameters after irradiation, with the CoO-doped composite showing the highest values.
Article
Materials Science, Multidisciplinary
Fahimeh Ahmadi, Zeinab Ebrahimpour, Asghar Asgari, Bao Van
Summary: In this study, Er3+-doped sulfophosphate glasses containing titanium nanoparticles (TiO2 NPs) and different concentrations of silver nanoparticles (AgNPs) were synthesized. The impact of AgNPs on the physical and structural characteristics, optical absorption and emission features, and photocatalytic activity of the glasses were investigated. The results showed that the addition of AgNPs enhanced the emission intensity of the glasses, with the system containing 0.04 mol% of AgNPs exhibiting optimal performance. Furthermore, the presence of AgNPs and TiO2 NPs in the glass matrix positively affected the photocatalytic performance.
Article
Materials Science, Multidisciplinary
Zhuang Li, Rongfei Huang, Wei Yuan, Shaoqiang Zheng, Wenlu Liao, Huiying Xu, Zhiping Cai
Summary: This study reports the first realization of an 868 nm Pr:YLF laser pumped by an InGaN blue laser diode. The laser achieved a maximum power of 641 mW with stable output and good beam quality. The experimental results were in agreement with theoretical simulations.
Article
Materials Science, Multidisciplinary
Bhishma Karki, Youssef Trabelsi, Amrindra Pal, Sofyan A. Taya, Ram Bharos Yadav
Summary: This study proposes an SF11 Prism- Ag- ZnO nanowires-CeO2-Sensing layer-based surface plasmon resonance sensor for measuring dopamine concentration in human blood. The sensor demonstrates high sensitivity and detection accuracy, and holds significant importance for early diagnosis of neurological diseases.
Article
Materials Science, Multidisciplinary
M. Taoufiq, A. Soussi, A. Elfanaoui, A. Ait Hssi, S. Baoubih, A. Ihlal, K. Bouabid
Summary: In this study, the effect of copper doping within ZnS on glass substrates was investigated through experimental and theoretical approaches. Pure ZnS and Cu-doped ZnS films with varying copper concentrations were deposited on glass substrates using the SILAR technique. The structural, morphological, and optical properties of the films were characterized, and the theoretical FP-LAPW method based on density functional theory was employed to study the properties of copper-doped ZnS.