Article
Materials Science, Multidisciplinary
Weisen Yang, Yifan Wang, Qingming Wang, Jinglin Wu, Gaigai Duan, Wenhui Xu, Shaoju Jian
Summary: Fe3O4@PDA-g-L-Cys core-shell composites were successfully fabricated for removing Pb2+ from an aqueous solution, and the factors affecting the adsorption properties were systematically evaluated. The thermodynamics constants indicated that the process of Pb2+ removal by Fe3O4@PDA-g-L-Cys were endothermic and spontaneous.
Article
Materials Science, Multidisciplinary
Hui Zhang, Ran Zhang, Yongfeng Geng, Yinglu Ji, Yi Zhang, Xu Li, Dejing Meng
Summary: The strain distribution, interface type, and causes of strain in gold core-shell nanorods were studied using HRTEM and GPA. Anisotropic strain distributions in the nanorods were affected by L-cysteine concentration and AA/Au3+ ratio, with {002} strain distributions being sensitive to increases in both. The core-shell interface was determined to be a mix of distorted coherent and semicoherent interfaces, mainly generated by Au-S bonds and lattice distortion.
Article
Engineering, Environmental
Yi Hao, Yuan Gao, Luyao Gao, Yulian He, Yingying Niu, Sameer Hussain, Ruixia Gao, Lisa D. Pfefferle, M. Shahid, Sicen Wang
Summary: A new class of amphiphilic magnetic adsorbents Fe3O4-GPS-A were synthesized through surface functionalization of Fe3O4 with tailored amphiphilic silanizing agents, with Fe3O4-DOA and Fe3O4-OAN showing fast adsorption and high capacity for dibutyl phthalate and dioctyl phthalate. The adsorbents maintained good performance even after repeated cycles, suggesting their potential application in phthalate ester detection.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Nanoscience & Nanotechnology
Xiufeng Li, Jasper van der Gucht, Philipp Erni, Renko de Vries
Summary: This study presents a method for creating a soft functional material directly from legume flours, by extracting globulins from soy and pea flours and mixing them with gum arabic to form a coacervate. The low interfacial tensions of the coacervates promote the deposition of a shell of coacervate material around oil droplets, demonstrating the potential fabrication of precise core-shell microcapsules from plant-based ingredients.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Environmental Sciences
Easar Alam, Qiyan Feng, Hong Yang, Jiaxi Fan, Sameena Mumtaz
Summary: The magnetic Fe3O4@mSiO(2)-NH2 was successfully synthesized using a solvothermal method and sol-gel method, with the optimal synthesis ratio of TMAOH:TEOS:APTES:Fe3O4 as 5:4:6:0.45. The adsorption of Cu2+, Zn2+, and Pb2+ by Fe3O4@mSiO(2)-NH2 showed good removal efficiency, primarily through single molecular layer adsorption.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Engineering, Environmental
Jin Li, Ruihong Yao, Bowen Deng, Zhijian Li, Kai Tuo, Congbin Fan, Gang Liu, Shouzhi Pu
Summary: A bifunctional core-shell-shell magnetic metal–organic framework was successfully constructed with superparamagnetism, unique porous structure, and large specific surface area. It exhibited excellent optical properties and can be used as a fluorescence sensor for tetracycline detection with a wide detection range and low detection limit.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Biochemistry & Molecular Biology
Navya Maryjose, Irma Custovic, Laroussi Chaabane, Eric Lesniewska, Olivier Pietrement, Odile Chambin, Ali Assifaoui
Summary: This work successfully synthesized polygalacturonate-based magnetic iron oxide nanoparticles (INP-polyGalA) with magnetic and negatively charged surfaces. These nanoparticles can capture substances like methylene blue through electrostatic interactions for pollution control, and can also form hydrogel beads to encapsulate active molecules and control their release using an external magnetic field.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2022)
Article
Chemistry, Multidisciplinary
Ayessa P. Maciel, Guilherme Gomide, Franciscarlos G. da Silva, Ana Alice A. M. Guerra, Jerome Depeyrot, Alessio Mezzi, Alex F. C. Campos
Summary: This paper focuses on the fabrication, characterization, and application of ferrite-based magnetic nanoparticles functionalized with L-lysine as potential nanoadsorbents to remove acetylsalicylic acid (ASA) from water. The results show that these nanoadsorbents can efficiently remove ASA from water and have the characteristics of reusability.
Article
Engineering, Environmental
Asiyeh Kheradmand, Hossein Ghiasinejad, Shahrzad Javanshir, Ali Khadir, Edris Jamshidi
Summary: A novel core-shell magnetic rhamnolipid-Co/Al layered double hydroxide nanocomposite was prepared for the elimination of ibuprofen from wastewater. The research confirmed excellent adsorption capability of MRL-Co/Al LDH for IBP.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Engineering, Environmental
Shunli Wan, Chunlei Yu, Yan Li, Zhongxiang Lu, Yuchen Wang, Yan Wang, Feng He
Summary: The new magnetic hybrid adsorbent Fe3O4@SiO2@MO with a core-shell structure effectively removes Cd(II) and Cu(II) from water due to its special coating structure. The presence of Ca(II) and Mg(II) has little impact on the removal efficiency, and the adsorbent can treat heavy-metal-polluted wastewater effectively in batch experiments.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Engineering, Environmental
Jingshu Wang, Jinhui Jeanne Huang, Yan Zhou, Yuan Liao, Song Li, Beichen Zhang, Shiteng Feng
Summary: This study demonstrated the use of carbon-coated zerovalent iron (Fe-0@C) as an electron donor to enhance autotrophic denitrification and simultaneous removal of nitrogen and phosphorus. The carbon shell played a critical role in preventing direct contact between Fe-0 and phosphorus and nitrate, maintaining Fe-0 activity. Phosphorus removal indirectly boosted H-2 generation and promoted bio-denitrification, leading to improved removal of both nitrogen and phosphorus.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2022)
Article
Physics, Multidisciplinary
Ibrahim Maouhoubi, Omar Mommadi, Redouane En-nadir, Soufiane Chouef, Izeddine Zorkani, Abdallah Ouazzani Tayebi Hassani, Abdelaziz El Moussaouy, Anouar Jorio
Summary: In this paper, we investigated the Stark shift and binding energy of a shallow donor-impurity in (GaAs/Ga1-?Al?As) core/shell quantum disk. The results showed that the orientation of the applied electric field and the size of the quantum disk have significant effects on both the Stark shift and impurity binding energy. These findings are important for advancing the understanding of Stark shift and impurity binding energy in quantum dots.
EUROPEAN PHYSICAL JOURNAL PLUS
(2023)
Article
Chemistry, Multidisciplinary
Chuan He, Yarong Ding, Canhua Li, Wang Yan, Aiqin Mao, Shuxian Wei, Minghui Li
Summary: This study presents a cost-effective method to prepare nZVI@Fe3O4 nanocomposites using a novel Fe(II) disproportionation reaction. The composites are efficient in removing Cr(VI) from aqueous solutions and can be easily separated using external magnets. The maximum adsorption capacity for Cr(VI) is 58.67 mg g(-1) at pH 6.0.
Article
Chemistry, Physical
Omar Falyouna, Ibrahim Maamoun, Khaoula Bensaida, Atsushi Tahara, Yuji Sugihara, Osama Eljamal
Summary: The study for the first time proposed the use of Mg/Fe0 for ciprofloxacin removal from water, achieving high removal efficiency under optimized conditions. The treatment system showed excellent performance over a wide pH range and demonstrated both physisorption and chemisorption mechanisms for ciprofloxacin removal, with thermodynamic analysis indicating an exothermic and spontaneous process.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Nanoscience & Nanotechnology
Xiaohan Meng, Ze Lv, Liyin Shi, Tianzhen Jiang, Shaoyang Sun, Yan Li, Jianguo Feng
Summary: A novel composite Fe3O4@ZIF-8@SiO2 nanoparticle was synthesized to remove pyrethroid insecticides from water. The prepared nanoparticles showed excellent adsorption performance and high dispersibility, and could be easily separated from water using a magnetic field. This study provides a potential design for recoverable and reusable nanoparticles in wastewater treatment.
ACS APPLIED NANO MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
M. H. Ghozza, I. S. Yahia, S. El-Dek
MATERIALS RESEARCH EXPRESS
(2020)
Article
Materials Science, Multidisciplinary
M. A. Zayed, S. El-dek, M. K. Ahmed, Doaa H. El Sherbiny
MATERIALS RESEARCH EXPRESS
(2020)
Article
Electrochemistry
Hadeer K. El Emam, S. El-Dek, Waleed M. A. El Rouby
Summary: Ni-doped BaTiO3 hollow spheres supported on reduced graphene oxide (RGO) nanocomposite were successfully synthesized and exhibited enhanced photoelectrochemical performance and long-term stability as photoanodes. The Ni-doped BaTiO3 HS/RGO showed higher photocurrent density and lower charge transfer resistance compared to BaTiO3 HS and BaTiO3 HS/RGO, leading to improved electrocatalytic activity and enhanced separation rate of photogenerated electrons and holes. This new approach presents a promising future for high-efficient photo-electrocatalysis.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2021)
Article
Chemistry, Physical
Mohamed H. Elbakkay, Waleed M. A. El Rouby, Andrea Marino-Lopez, Ana Sousa-Castillo, Veronica Salgueirino, S. I. El-Dek, Ahmed A. Farghali, Miguel A. Correa-Duarte, Pierre Millet
Summary: The study on TiO2/Sb2S3/RGO heterostructures produced via a simple one-pot method shows improved light absorption, charge separation and transportation, as well as enhanced conductivity of the catalyst.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Materials Science, Ceramics
Aya El-Shafey, Reham Shams El Din, Sarah H. Abdelazim, Nahla Mamdouh, Dina Salah, S. I. El-Dek, A. H. Zaki
Summary: ZnO nanoparticles with different morphologies were prepared using the biotemplate method, and their microstructure was found to strongly depend on the type of biotemplate used. Nanoparticles and platelet-like structures with high crystallinity were obtained, with ZnO nanoparticles prepared using turmeric powder showing high catalytic activity for the removal of methyl orange dye.
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
(2021)
Article
Materials Science, Multidisciplinary
A. M. Semaida, I. G. Bordyuzhin, S. El-Dek, M. K. Kutzhanov, V. P. Menushenkov, A. G. Savchenko
Summary: This study investigated the influence of milling time on the morphological, structural, and magnetic properties of NdFeB powders, finding that coercivity reached a maximum value after 1 hour of milling. Additionally, the effect of the volume ratio of different magnetic phases on microstructure and magnetic properties was reported, leading to the highest specific saturation magnetization after 8 hours of milling.
MATERIALS RESEARCH EXPRESS
(2021)
Article
Chemistry, Physical
Mohamed H. Elbakkay, S. I. El-Dek, Ahmed A. Farghali, Waleed M. A. El Rouby
Summary: The Cu-x/CoFe LDHs electrocatalyst showed superior activity and stability for oxygen evolution reaction due to the loaded atomic Cu species improving the electronic structure and providing more exposed active sites. The efficient Cu-4.76/CoFe LDHs electrode exhibited the best electrocatalytic activity with a much lower overpotential and small Tafel slope compared to other earth-abundant electrocatalysts.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Materials Science, Multidisciplinary
Amira M. M. Amin, Yosra M. M. Soliman, S. I. El-Dek, Yasser M. Z. Ahmed, A. H. Zaki
Summary: The study investigated the suitability of recycling industrial wastes into valuable zinc ferrite ceramics. Results showed that ferrites synthesized from pure oxides and mixtures containing wastes exhibited similar physical and magnetic properties.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2022)
Article
Nuclear Science & Technology
Hany Abd El-Raheem, Rabeay Y. A. Hassan, Rehab Khaled, S. El-Dek, Ahmed Farghali, Ibrahim M. El-Sherbiny
Summary: Poly(ester-urethane) urea (PEUU) based on ethanolamine as a chain extender was chemically synthesized and irradiated with different doses of gamma rays. The study involved full physico-electrochemical characterization of the samples to understand the structural changes, thermal stability, crystallinity, electrochemical properties, and other characteristics. The crosslinking density was found to be dependent on the irradiation dose, making this study recommendable for similar polymeric targets exposed to electromagnetic radiations.
RADIATION EFFECTS AND DEFECTS IN SOLIDS
(2021)
Article
Materials Science, Multidisciplinary
N. G. Imam, Mennatallah AbouHasswa, Giuliana Aquilanti, S. El Dek, N. Okasha, Ahmed A. G. Al Shahawy
Summary: In this study, surface-modified nanoparticles of Co0.2Fe2.8O4/x polyethylene glycol (PEG) were synthesized and characterized using various techniques. The effect of different percentages of PEG capping on the structural, electronic, magnetic properties, and relaxivity r(2) of the nanoparticles was investigated. The compositions of 30% and 40% PEG showed promising results for MRI purposes, indicating the potential role of PEG as a capping agent.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2021)
Article
Chemistry, Multidisciplinary
Hager Samir, Mohamed Taha, S. I. El-Dek, Ayman H. Zaki
Summary: Sodium titanate nanotubes and their metal-doped derivatives were prepared and characterized. The measurements and calculations showed that these materials have suitable properties for various optoelectronic applications.
Article
Materials Science, Multidisciplinary
Mohamed S. Afify, Mohamed M. El Faham, Usama Eldemerdash, S. El-Dek, Waleed M. A. El Rouby
Summary: This study synthesized La1-xAgxMnO3 nanoparticles using a wet chemical method, and investigated their formation, chemical composition, morphology, and optical properties. The samples were used as photoanodes for water splitting in alkaline media, and showed high photocurrent density and low charge transfer resistance, indicating excellent long-term stability and photoelectrochemical performance.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2022)
Article
Chemistry, Multidisciplinary
Marwa H. A. Aouelela, Mohamed Taha, Samaa I. El-dek, Abdelwahab Hassan, Alexander N. Vasiliev, Mahmoud Abdel-Hafiez
Summary: During the past decade, two-dimensional layered materials have attracted much attention due to their unique physical and electronic properties, providing new opportunities for the exploration of novel physics and devices. Among these materials, iron selenide has become a focus of interest for physicists as a potential platform for developing new superconductors. Chemical doping is a powerful approach to manipulate and optimize the electronic structure and physical properties of materials. This study investigates the effects of molybdenum and sulfur doping on the physical properties of FeSe through complementary measurements and theoretical calculations, offering insights into the influence of doping on the superconducting properties of FeSe.
Article
Materials Science, Multidisciplinary
Ahmed A. Farghali, S. El-Dek, Mohamed H. Elbakkay, Waleed M. A. El Rouby
ECS JOURNAL OF SOLID STATE SCIENCE AND TECHNOLOGY
(2020)
Article
Chemistry, Multidisciplinary
Ayman H. Zaki, Ahmed Esmail Shalan, Aya El-Shafeay, Yasser M. Gadelhak, Enas Ahmed, M. O. Abdel-Salam, M. Sobhi, S. El-dek
NANOSCALE ADVANCES
(2020)
