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Review
Chemistry, Analytical
Mahmoud A. Hefnawy et al.
Summary: Cholesterol is a crucial component in animal bodies, necessary for hormone production and creating vitamin D. High blood cholesterol levels increase the risk of heart disease, making clinical diagnosis of cholesterol concentration vital for human healthcare. Electrochemical sensors offer high accuracy for detecting cholesterol in biological fluids and this review compares enzymatic and non-enzymatic techniques for electrochemical sensing. The article discusses recent progress in electrochemical determination of cholesterol using various materials, such as metal composites, carbonaceous materials, ionic liquid crystals, and polymers, as well as different sensing methods.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2023)
Review
Biochemistry & Molecular Biology
Geetha Palani et al.
Summary: The rapid increase in industrialization has led to a greater demand for human needs but at the cost of environmental harm. Industrial pollution, including dye industries, results in the discharge of wastewater containing dyes and hazardous chemicals, posing a critical challenge for sustainable development. Nanotechnology offers a promising solution for wastewater treatment and remediation by utilizing nanoparticles' surface properties and chemical activity. Silver nanoparticles (AgNPs) have been extensively studied for their efficiency in treating dye effluents and their antimicrobial properties in health and agriculture sectors. This review article summarizes the applications of nanosilver-based particles in dye removal/degradation, water management strategies, and agriculture.
Article
Materials Science, Multidisciplinary
Ayman S. Eliwa et al.
Summary: The climate change is considered a crucial environmental issue for the next decade. In this study, a metal-organic framework was prepared using the ultrasonic-assisted method for environmental applications. The Ni-MOF acted as an efficient electrocatalyst for electrochemical urea removal. The materials were characterized by various analytical techniques and the activity of the electrode towards urea removal and water splitting was investigated.
Article
Materials Science, Multidisciplinary
Mahmoud A. Hefnawy et al.
Summary: Taking advantage of multi-walled carbon nanotubes, metallic silver/carbon nanotube composite (Ag@CNT) was prepared using green tea extract to enhance hydrogen and oxygen evolution reactions. Various physicochemical methods were used to characterize the synthesized Ag@CNT composite. The electrochemical performance of the Ag@CNT electrocatalyst for hydrogen production was compared to pristine CNT and Ag. The results showed enhanced electrocatalysis for the designed composite.
Article
Polymer Science
Nada S. Al-Kadhi et al.
Summary: A modified electrode with conducting polymer (Polyaniline) and NiO nanoflowers was developed for nitrite ion detection in drinking water. The NiO nanoflowers were prepared using a simple method and characterized using various techniques to determine their chemical structure and surface morphology. The modified electrode showed a linear detection range of 0.1-1 mu M and 1-500 mu M, with low and high concentrations having limits of detection (LOD) of 9.7 nM and 64 nM, respectively. The electrode's activity was studied in different pH values and its anti-interfering criteria were tested in the presence of various interfering cations. The interaction between nitrite ions and the NiO{100} surface was also analyzed using DFT calculations.
Article
Polymer Science
Nada S. Al-Kadhi et al.
Summary: Nanoparticles of ZnO-Chitosan (Zn-Chit) composite with improved properties were prepared and characterized using various analytical techniques. The modified composite showed excellent performance for nitrite sensing and hydrogen production applications. It also exhibited long-term stability and enhanced energy security, making it a promising catalyst for fuel production. The electrode durability was assessed through long-time constant potential chronoamperometry.
Article
Polymer Science
Fowzia S. Alamro et al.
Summary: Wastewater with high urea levels poses a significant risk to human health. The use of the NiCo2O4@chitosan catalyst can transform urea in wastewater into hydrogen, contributing to environmental conservation and sustainable energy production.
Article
Chemistry, Multidisciplinary
Ali H. Bashal et al.
Summary: Energy storage applications have gained significant attention due to environmental concerns. In this study, a green method was used to prepare a composite of nickel-iron-based spinel oxide nanoparticle@CNT, and its characteristics were analyzed using various techniques. The composite material exhibited promising electrochemical performance and cycle stability.
Article
Chemistry, Physical
Shymaa S. Medany et al.
Summary: A modified NiCo2O4 composite electrocatalyst is prepared with chitosan matrix to enhance the electrooxidation of ethylene glycol. The synergistic effect between spinel oxide and chitosan is evaluated through a comparative study with pristine NiCo2O4. The electrochemical activity towards ethylene glycol electrooxidation is investigated in an alkaline solution, and the long-term stability of the composite electrode is measured. Kinetic parameters and adsorption energies are calculated, and the interaction between spinel oxide and chitosan is studied using a Forcite model.
SURFACES AND INTERFACES
(2023)
Article
Chemistry, Multidisciplinary
Qin Yang et al.
Summary: An electrochemical sensor based on La2O3-CeO2 composite modified glassy carbon electrode was fabricated for the determination of nitrite. The modified electrode exhibited excellent electrocatalytic activity and showed promising performance for nitrite detection.
Article
Chemistry, Applied
Taotao Zhe et al.
Summary: In this study, MoO3/Co3O4 nanostructures were successfully synthesized via a hybrid electrochemical deposition strategy for nitrite detection. The electrode demonstrated excellent electrocatalytic properties and promising capabilities for nitrite detection in complex food samples. This research provides a significant strategy for the application of bimetallic heterostructures in sensing interface design.
Article
Chemistry, Physical
Shridevi Salagare et al.
Summary: The study aimed to develop a low-cost, simple, sensitive, and selective three-electrode electrochemical nitrite sensor. PdO-RGO nanocomposites were successfully synthesized, providing a large surface area for nitrite adsorption and demonstrating good electrode performance.
Article
Nanoscience & Nanotechnology
Sumaiya N. Hawar et al.
Summary: This study successfully green-synthesized silver nanoparticles using A. graecorum and demonstrated their potential antitumor and antifungal activities.
JOURNAL OF NANOMATERIALS
(2022)
Article
Chemistry, Analytical
Ying Yang et al.
Summary: The electrochemical nitrite sensor based on gold nanoparticles modified molybdenum disulfide and reduced graphene oxide shows excellent performance in terms of high sensitivity, short response time, low detection limit, and good linear detection range. The synergistic effect between MoS2 and rGO nanosheets, along with the catalytic property of appropriate content of Au nanoparticles, contributes to the outstanding electrochemical performances of the sensor.
MICROCHEMICAL JOURNAL
(2022)
Article
Chemistry, Physical
Mahmoud A. Hefnawy et al.
Summary: Cu-doped NiO was synthesized as an efficient electrocatalyst for urea electrochemical oxidation, with morphology and chemical structure confirmed using various techniques. The catalytic activity and stability of the material were examined under different conditions, showing promising results for urea oxidation.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Biochemistry & Molecular Biology
Diego Alberto Lomeli-Rosales et al.
Summary: In this study, the synthesis of metallic nanoparticles using extracts from Capsicum leaves was investigated. The leaf extract demonstrated the best results for the synthesis of gold and silver nanoparticles. The synthesized nanoparticles exhibited stability and ease of synthesis, and showed antioxidant and antimicrobial activities.
Article
Chemistry, Physical
Mahmoud A. Hefnawy et al.
Summary: In this study, a self-assembly Pd-Schiff base complex was synthesized and used as an electrochemical sensor for paracetamol detection. By optimizing the ligand structure of Schiff base, the electrocatalytic activity of the Pd-Schiff base complex towards paracetamol was enhanced. Characterization of the prepared metal complex was performed using different techniques, and it was demonstrated that the modified electrode had high sensitivity for paracetamol detection.
Article
Crystallography
Merajuddin Khan et al.
Summary: This study successfully synthesized silver nanoparticles using Juniperus procera extract as a bioreducing and stabilizing agent. The synthesized nanoparticles exhibited crystalline structure, spherical morphology, and demonstrated effective antimicrobial activity comparable to standard antimicrobial drugs.
Article
Chemistry, Multidisciplinary
Mahmoud A. Hefnawy et al.
Summary: In this study, the catalytic activity of the urea electrooxidation (UEO) process was enhanced using a composite material consisting of polyaniline (Pani), nickel oxide (NiO), and manganese oxide (MnOx). The chemical structures and surface morphology of the catalysts were characterized, and the catalytic activity of four modified electrocatalysts was investigated using various techniques. The best electrocatalyst exhibited a high anodic current in alkaline solution.
Article
Materials Science, Multidisciplinary
Mahmoud A. Hefnawy et al.
Summary: In this study, we successfully modified the NiO-based graphite electrode for urea electrooxidation by using a green synthesis nanoparticles composite of magnetite@chitosan. The magnetite nanoparticles increased the active sites, while chitosan enhanced urea adsorption on the electrode surface. By optimizing the catalyst ratio, we achieved excellent catalytic performance with the Ni0.75Fe0.25 electrocatalyst.
MATERIALS CHEMISTRY AND PHYSICS
(2022)
Article
Chemistry, Multidisciplinary
Yasmina Khane et al.
Summary: This study focused on the green synthesis of silver nanoparticles using aqueous Citrus limon zest extract, optimizing the necessary factors for formation and stability. The nanoparticles exhibited excellent antibacterial and antioxidant properties, making them suitable for applications in biomedical and pharmaceutical fields.
Review
Environmental Sciences
Sadaf Aiman Khan et al.
Summary: The increasing demand for pure and accessible water, along with improper waste disposal, presents major challenges for sustainable development. Nanoscale silver technology is an effective solution for water remediation, with its antimicrobial and biocidal properties proving advantageous. This review focuses on the environmentally friendly synthesis of silver nanoparticles and their applications in wastewater disinfection, discussing their effectiveness in dealing with pollutants like dyes, heavy metals, and emerging contaminants. This knowledge dataset will be beneficial for researchers looking to utilize the unique features of AgNPs and develop novel solutions for improving wastewater treatment.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2022)
Review
Biochemistry & Molecular Biology
Maasoumeh Marhamati et al.
Summary: This study investigated the pollution levels of nitrate and nitrite in drinking water and fruit juices in Iran, revealing that juices are generally safe while most bottled drinking water samples have nitrate and nitrite values below the standards. The nitrate content exceeded labeled amounts in 96% of samples, and nitrite was not labeled in 80% of them. The presence of nitrate and nitrite was mainly attributed to the use of nitrogen fertilizers and the lack of wastewater treatment systems.
CURRENT PHARMACEUTICAL BIOTECHNOLOGY
(2021)
Review
Chemistry, Multidisciplinary
Sasireka Velusamy et al.
Summary: Textile wastewater heavy metal pollution has become a severe global environmental issue, with significant impacts on natural water resources and human health. Graphene oxide as an adsorbent exhibits advantages in efficient removal of heavy metal ions, playing a crucial role in the remediation of textile wastewater.
Article
Environmental Sciences
Zitong Liao et al.
Summary: With Asia being the most populous continent, the contradiction between water supply and demand is increasing. This study identifies per capita GDP and water stress as important factors affecting wastewater treatment and reclaimed water use. The development of wastewater treatment is considered beneficial for the advancement of reclaimed water use in Asian countries.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2021)
Article
Materials Science, Multidisciplinary
Mahmoud A. Hefnawy et al.
Summary: Ni-Mn double hydroxide catalysts loaded on RGO exhibited excellent performance for both ethylene glycol electrooxidation and hydrogen evolution reaction. The modified electrodes were characterized using various techniques and electrochemical tests were conducted to evaluate their performance.
Article
Materials Science, Multidisciplinary
Yizhuo Lu et al.
Summary: The study prepared a composite of graphene and silver nanoparticles for the treatment of colorectal carcinoma, showing excellent anti-cancer effects and stability. The nanocomposite demonstrated significant catalytic activity and was effective in reducing 4-nitrophenol.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2021)
Review
Biochemistry & Molecular Biology
Tamara Bruna et al.
Summary: Silver nanoparticles have excellent antimicrobial properties against a wide range of bacteria, including drug-resistant strains. Research on the synergistic effects of silver nanoparticles with other antibacterial agents for medical applications is ongoing to effectively treat or prevent infections.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2021)
Review
Chemistry, Analytical
Olfa Kanoun et al.
Summary: Electrochemical sensors play a significant role in detecting chemical contaminants in water, with improving sensing performance through surface modification of the working electrodes. Particularly for challenging pollutants like pesticides, bio sensors are highlighted for their application.
Review
Chemistry, Analytical
R. K. A. Amali et al.
Summary: Nano-enabled electrochemical sensors have been developed as a cost-effective, efficient, and user-friendly tool for nitrate analysis in various environmental samples. The use of nanomaterials has greatly enhanced the analytical performance of these sensors, and this review discusses recent advances and challenges in this field.
TRENDS IN ENVIRONMENTAL ANALYTICAL CHEMISTRY
(2021)
Article
Chemistry, Analytical
Ahmed Galal et al.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2020)
Article
Chemistry, Physical
Sylwia Berbec et al.
Review
Biotechnology & Applied Microbiology
Iman A. Saleh et al.
ENVIRONMENTAL TECHNOLOGY & INNOVATION
(2020)
Article
Materials Science, Multidisciplinary
Ahmed Galal et al.
Review
Materials Science, Composites
Samy M. Shaban et al.
COMPOSITES COMMUNICATIONS
(2020)
Review
Chemistry, Multidisciplinary
Gregorio Crini et al.
ENVIRONMENTAL CHEMISTRY LETTERS
(2019)
Review
Environmental Sciences
Lakshmi Prasanna Lingamdinne et al.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2019)
Article
Chemistry, Physical
Soha M. Albukhari et al.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2019)
Article
Electrochemistry
Nada F. Atta et al.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2018)
Article
Materials Science, Multidisciplinary
C. Karade et al.
MATERIALS RESEARCH EXPRESS
(2017)
Article
Chemistry, Analytical
Han Zhu et al.
SENSORS AND ACTUATORS B-CHEMICAL
(2013)
Review
Chemistry, Analytical
Danielle W. Kimmel et al.
ANALYTICAL CHEMISTRY
(2012)
Article
Electrochemistry
H. Heli et al.
ELECTROCHIMICA ACTA
(2012)
Article
Chemistry, Multidisciplinary
Daniela C. Marcano et al.
Review
Chemistry, Analytical
Joseph Wang
