Competition between enzymatic and non-enzymatic electrochemical determination of cholesterol

MA Hefnawy, SA Fadlallah, RM El-Sherif… - Journal of …, 2023 - Elsevier
Cholesterol is considered an essential component in animal bodies that plays a vital role in
hormone production and creating vitamin D. The elevated blood cholesterol level increases …

Nickel–cobalt oxides decorated Chitosan electrocatalyst for ethylene glycol oxidation

SS Medany, MA Hefnawy - Surfaces and Interfaces, 2023 - Elsevier
A composite of NiCo 2 O 4 modified electrocatalyst is prepared to enhance the ethylene
glycol electrooxidation. Chitosan matrix is used to improve the activity and adsorption ability …

Synthesis and characterization of lead-based metal–organic framework nano-needles for effective water splitting application

AS Eliwa, MA Hefnawy, SS Medany, RG Deghadi… - Scientific Reports, 2023 - nature.com
Metal organic frameworks (MOFs) are a class of porous materials characterized by robust
linkages between organic ligands and metal ions. Metal–organic frameworks (MOFs) exhibit …

Polyaniline-supported nickel oxide flower for efficient nitrite electrochemical detection in water

NS Al-Kadhi, MA Hefnawy, FS Alamro, RA Pashameah… - Polymers, 2023 - mdpi.com
A modified electrode with conducting polymer (Polyaniline) and NiO nanoflowers was
prepared to detect nitrite ions in drinking water. A simple method was used to prepare the …

Ultrasonic-assisted synthesis of nickel metal-organic framework for efficient urea removal and water splitting applications

AS Eliwa, MA Hefnawy, SS Medany, RG Deghadi… - Synthetic Metals, 2023 - Elsevier
The change in the climate is considered a critical environmental issue that humanity will
deal with through the next decade. Herein, the ultrasonic-assisted method prepared the …

Zinc nanocomposite supported chitosan for nitrite sensing and hydrogen evolution applications

NS Al-Kadhi, MA Hefnawy, S S. Nafee, FS Alamro… - Polymers, 2023 - mdpi.com
Nanoparticles of ZnO-Chitosan (Zn-Chit) composite were prepared using precipitation
methods. Several analytical techniques, such as scanning electron microscope (SEM) …

Controllable Synthesis of Fe2O3/Nickel Cobaltite Electrocatalyst to Enhance Oxidation of Small Molecules

FS Alamro, SS Medany, NS Al-Kadhi, AM Mostafa… - Catalysts, 2024 - mdpi.com
Nickel-based catalysts have been widely recognized as highly promising electrocatalysts for
oxidation. Herein, we designed a catalyst surface based on iron oxide electrodeposited on …

Facile green synthesis of Ag/carbon nanotubes composite for efficient water splitting applications

MA Hefnawy, A Nafady, SK Mohamed, SS Medany - Synthetic Metals, 2023 - Elsevier
Taking advantage of the multi-walled carbon nanotubes in enhancing electrical conductivity
and gas generation, metallic silver/carbon nanotube composite (Ag@ CNT) was prepared …

High-performance IN738 superalloy derived from turbine blade waste for efficient ethanol, ethylene glycol, and urea electrooxidation

MA Hefnawy, SS Medany, RM El-Sherif… - Journal of Applied …, 2023 - Springer
In this work, IN738 superalloy used previously in gas turbines was recycled and used as a
working electrode for the electrooxidation of different fuels, namely ethylene glycol, ethanol …

[HTML][HTML] Chitosan Supports Boosting NiCo2O4 for Catalyzed Urea Electrochemical Removal Application

FS Alamro, MA Hefnawy, SS Nafee, NS Al-Kadhi… - Polymers, 2023 - mdpi.com
Currently, wastewater containing high urea levels poses a significant risk to human health.
Else, electrocatalytic methodologies have the potential to transform urea present in urea-rich …