Review
Materials Science, Multidisciplinary
Mohamed A. Shenashen, Mohammed Y. Emran, Ayman El Sabagh, Mahmoud M. Selim, Ahmed Elmarakbi, Sherif A. El-Safty
Summary: Food intake provides vitality and nutrients to support living organisms, but food safety and contamination issues have a direct impact on health. The development of new monitoring technologies is crucial for ensuring food safety and environmental benefits. Advancements in sensory devices allow for accurate monitoring and evaluation, supporting standard food quality.
PROGRESS IN MATERIALS SCIENCE
(2022)
Article
Chemistry, Analytical
Mohammed Y. Emran, Mohamed A. Shenashen, Ahmed Elmarakbi, Mahmoud M. Selim, Sherif A. El-Safty
Summary: A portable electrochemical sensor was developed for monitoring noradrenaline (NA) secreted from living cells, showing high selectivity, sensitivity, and a wide linear range. The sensor design offers easy signaling, good stability, high biocompatibility, and compatibility with portable smartphones.
ANALYTICA CHIMICA ACTA
(2022)
Article
Engineering, Environmental
Mohammed Y. Emran, Mohamed A. Shenashen, Alaa Eid, Mahmoud M. Selim, Sherif A. El-Safty
Summary: The study focused on investigating the electrochemical sensing properties of P-, N-doped CU for dopamine molecules, with P-, N-doped CU-800 K/IDA showing high sensitivity, low detection limit, wide linear range, good selectivity, high stability, low cytotoxicity, and biocompatibility. The designed portable sensor can be used for on-site detection of dopamine with high sensitivity.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Biophysics
Mohammed Y. Emran, Mohamed A. Shenashen, Ayman El Sabagh, Mahmoud M. Selim, Sherif A. El-Safty
Summary: A highly sensitive and selective enzymeless electrochemical acetylcholine sensor based on CuMS@C was designed for detecting ACh in human fluid samples. The sensor exhibited fast sensing property, sensitivity, selectivity, stability, and reusability, making it a promising tool for clinical investigation of ACh levels. The CuMS@C surface morphology and composition played a key role in facilitating ACh diffusion/loading, increasing interface surface area, and enhancing catalytic activity.
COLLOIDS AND SURFACES B-BIOINTERFACES
(2022)
Article
Chemistry, Physical
Hassanien Gomaa, Mohamed A. Shenashen, Amro Elbaz, Satoshi Kawada, Tarek A. Seaf El-Nasr, Mohamed F. Cheira, Alaa Eid, Sherif A. El-Safty
Summary: This study developed a highly selective extraction protocol for gold (Au-III) ions from electronic urban waste using unique inorganic-organic mesoporous hybrid segregators, demonstrating effective adsorption and recovery of Au-III ions. The segregators exhibited hierarchical surfaces with tri-modal mesopores and toothed edges, leading to selective extraction of Au-III ions with high capacity and reusability, making them a promising extractor for gold recovery from waste electronics.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2021)
Article
Chemistry, Multidisciplinary
Mohammed Y. Emran, Sherif A. El-Safty, Ahmed Elmarakbi, Abduallah Reda, Ayman El Sabagh, Mohamed A. Shenashen
Summary: The functionalized chipset nanosensor designed in this study, using N-CNB and N-CNS, showed enhanced performance for monitoring neurotransmitters in human fluids with high selectivity and sensitivity.
ADVANCED MATERIALS INTERFACES
(2022)
Article
Chemistry, Multidisciplinary
Ahmed M. Azzam, Mohamed A. Shenashen, Mohamed S. Selim, Bayaumy Mostafa, Ahmed Tawfik, Sherif A. El-Safty
Summary: In this study, a novel nanomaterial was fabricated for the rapid detection and elimination of bacterial pathogens. The nanospheres exhibited high selectivity and capture efficiency, enabling the rapid detection of Bacillus cereus within 15 minutes.
Article
Chemistry, Applied
Mohamed S. Selim, Ahmed M. Azzam, Shimaa A. Higazy, Sherif A. El-Safty, Mohamed A. Shenashen
Summary: Since the ban on TBT compounds, silicone foul-release coatings have gained increasing attention as environmentally friendly and cost-effective alternatives. In this study, elastomeric nanocomposites of polydimethylsiloxane and graphene oxide with TiO2 nanorods were developed. By controlling the concentration and roughness of the nanofillers, the fouling repellency and superhydrophobicity of the nanocomposites were improved.
PROGRESS IN ORGANIC COATINGS
(2022)
Article
Chemistry, Multidisciplinary
Mohamed S. Selim, Nesreen A. Fatthallah, Mohamed A. Shenashen, Shimaa A. Higazy, Hekmat R. Madian, Mahmoud M. Selim, Sherif A. El-Safty
Summary: A catalytic hydrosilation approach was used to construct a bio-inspired porous nanocoating with micro-/nano-roughness, low surface free energy, and high fouling release efficiency. The coating showed simplicity in fabrication, ease of large-area preparation, and the ability to simultaneously offer dual micro-/nano-scale structures. This study may expand the applications of bio-inspired functional materials.
Review
Materials Science, Multidisciplinary
Ahmed Elmasry, Wiyao Azoti, Sherif A. El-Safty, Ahmed Elmarakbi
Summary: This article discusses the importance of modeling and simulation in the materials industry, the application of multiscale techniques in studying composite materials, and the criteria for selecting appropriate models.
PROGRESS IN MATERIALS SCIENCE
(2023)
Article
Chemistry, Physical
Eslam Talaat, Mohammed Y. Emran, Hassanien Gomaa, Ahmed Kotb, Adel A. Abdelwahab, Mohamed Abdel-Hakim, Eman M. Saad, Mohamed. A. Shenashen, Sherif A. El-Safty
Summary: An active electrochemical sensor for screening adrenaline (AD) in human fluid samples and pharmaceutical drugs was developed using sulfur-doped carbon microspheres (S-CMS) and irregular-edge carbon stacked sheet (S-CSS) structures. The S-CSS-based sensor exhibited high selectivity and sensitivity with a wide detection range and a low detection limit for AD. It can be used to monitor AD in pharmaceutical drugs and human blood serum with fast response and using highly economic materials at extremely low concentrations.
SURFACES AND INTERFACES
(2023)
Article
Engineering, Environmental
Hassanien Gomaa, Mohamed A. Shenashen, Mohamed F. Cheira, Keisuke Sueki, Tarek A. Seaf El-Nasr, Mahmoud M. Selim, Sherif A. El-Safty
Summary: This study proposes an efficient method for extracting uranium from raw materials by utilizing Three-dimensional mesoporous silica monoliths (MSMs) derived from affordable and sustainable resources like rice husk. The MSMs exhibit high selectivity in extracting 238U isotopes from altered granite rock.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Green & Sustainable Science & Technology
Hassanien Gomaa, Mohamed A. Shenashen, Mohamed F. Cheira, Keisuke Sueki, Tarek A. Seaf El-Nasr, Mahmoud M. Selim, Sherif A. El-Safty
Summary: The expansion of engineering and development of porous materials from agro-waste-derived for the synthesis of bio-adsorbents as efficient extractors is a significant breakthrough in the economy and environment. This study successfully prepared a novel spongy mesoporous hybrid silica (SMS-L) from wheat straw through dissolution/precipitation methodology. The SMS and SMS-L bio-adsorbents were used to extract/preconcentrate 232Th isotope from Egyptian cataclastic rock (ECR), showing high adsorption capacity depending on the pH value of the extraction process. The research provides important insights into the utilization of sustainable waste and the potential for clean energy applications.
JOURNAL OF CLEANER PRODUCTION
(2023)
Article
Chemistry, Multidisciplinary
Mohammed Y. Emran, Mohamed A. Shenashen, Ahmed Elmarakbi, Mahmoud M. Selim, Sherif A. El-Safty
Summary: In this study, nonenzymatic electrochemical sensors based on Mn2O3 nanolayers/carbon and Mn2O3 flower-like/carbon structures were designed for the direct, sensitive, and selective monitoring of acetylcholine (ACh) molecules in complex biological environments, demonstrating high stability and selectivity for further investigation and monitoring of neuronal disorders.
NEW JOURNAL OF CHEMISTRY
(2022)
Article
Engineering, Electrical & Electronic
Mahmoud. M. Selim, Sherif A. El-Safty
Summary: Based on Kirchhoff plate theory, this study investigates the vibration behavior of irregular nanoplates with consideration of initial compressive stress effects. Analytical solutions reveal that the natural frequency of the nanoplate is significantly dependent on irregularity and compressive initial stresses. Numerical results show that the natural frequency of nanoplates increases with surface irregularity and initial stress parameters.
JOURNAL OF NANOELECTRONICS AND OPTOELECTRONICS
(2021)