Gomaa A. M. Ali

University of Khorfakkan

Very high supercapacitance values are obtained using catalyst free porous carbon nanoparticles (PCNs). The obtained PCNs have a porous structure with fine particles 35 nm in size. The specific capacitance of PCNs is 343Fg−1 and 309Fg−1 at 5mVs−1 and 0.06Ag−1, respectively. PCNs shows a high cyclic stability of about 90% and high columbic efficie...

MnO2 nanoflower is prepared by electrochemical conversion of Mn3O4 obtained by heat treatment of spent zinc-carbon batteries cathode powder. The heat treated and converted powders were characterized by TGA, XRD, FTIR, FESEM and TEM techniques. XRD analyses show formation of Mn3O4 and MnO2 phases for the heat treated and converted powders, respectiv...

MnO2 nanoflower is prepared by electrochemical conversion of Mn3O4 obtained by heat treatment of spent zinc‒carbon batteries cathode powder. The heat treated and converted powders were characterized by TGA, XRD, FTIR, FESEM and TEM techniques. XRD analyses show formation of Mn3O4 and MnO2 phases for the heat treated and converted powders, respectiv...

Carbon nanospheres derived from natural source using a green approach were reported. Lablab Purpureus seeds were pyrolyzed at different temperatures, to produce carbon nanospheres for supercapacitor electrode materials. The synthesized carbon nanospheres were analyzed using SEM, TEM, FTIR, TGA, Raman Spectroscopy, BET and XRD. They were later fabri...

Electrochemical materials, namely MnO2 and reduced graphene oxide (rGO), have been prepared in diverse morphologies (nanoflowers and nanosheets, respectively). Different physical and chemical characterizations were conducted to investigate the material structure and morphology. Electrochemical properties of these materials have been studied compreh...

This article attempts to practicalise Open Science (OS) to promote ideas and enhance efforts for the Sustainable Development Goals (SDGs). It delineates General Statements (n = 20) as guiding beacons and the Specific Statements (n = 70) that act as precision tools in OS orientated policymaking, research, innovations, and public engagement, and acce...

Recently, metal–organic frameworks (MOFs) have attracted much attention as versatile materials for drug delivery and personalized medicine. MOFs are porous structures made up of metal ions coupled with organic ligands. This review highlights the synthesis techniques used to design MOFs with specific features such as surface area and pore size, and...

The persistent corrosion of metal surfaces poses a significant engineering challenge, including material degradation, loss of metal-structural integrity, and massive maintenance costs in various industrial, medical, and aerospace applications. Microorganisms such as archaea, bacteria, fungi, and microalgae can directly or indirectly influence metal...

The study successfully produced a hybrid nanocomposite of silver nanoparticles embedded with end-of-life battery-derived sheets-like nitrogen and sulfur-doped reduced-graphene oxide (AgNPs@NSG), which was utilized to remove methylene blue (MB) and paracetamol (PC) from aqueous solutions. The AgNPs@NSG nanocomposite was analyzed using various techni...

Biodegradable naturally occurring adsorbents derived from waste precursors are essential for water sustainability. This study investigates using modified cellulose nanostructure (m-CNS) with thiols from wood pulp as a waste source to remove Cr(VI) ions from aqueous solution under different conditions, such as temperature, initial dye concentration,...

Cancer, claiming approximately 10 million lives annually, remains a leading cause of global mortality. Conventional cancer treatments, notably chemotherapy and radiotherapy, often entail adverse effects, such as cytotoxicity and the development of resistance, posing significant challenges in cancer management. While natural products have historical...

Environmental sensors are compact, friendly tools that help farmers manage their fields more effectively and avoid crop and plant disease by keeping track of the weather, water, irradiation, and soil moisture levels. Science and technology are committed to developing fresh approaches to addressing pollution levels, water and energy shortages, and c...

Abstract: Background: Cobalt oxide nanocubes have garnered significant attention as potential supercapacitor electrodes due to their unique structural and electrochemical properties. The spent lithium-ion batteries (LiBs) are considered as zero-cost source for cobalt oxide production. Objectives: The aim of this work is to recover cobalt oxide from...

In this study, gold-reduced graphene oxide (Au@rGO) nanocomposite has been synthesized by repurposing electronic waste and dry batteries. This innovative approach involved utilizing the graphite rod from dry batteries to produce reduced graphene oxide (rGO), which was subsequently modified through the incorporation of gold nanoparticles obtained fr...

Coordination polymers, a broad class of porous hybrid materials resulting from the connection of metal ions with organic ligands, showcase enduring porosity, well-organised crystalline structures, and open metal active sites that augment their metal ions' redox activity. This investigation focuses on examining a nanocomposite composed of cobalt car...

The transition towards renewable energy sources necessitates efficient energy storage systems to meet growing demands. Electrochemical capacitors, particularly electric double-layer capacitors (EDLCs), show promising performance due to their superior properties. However, the presence of resistance limits their performance. This study explores using...

There is no doubt that organic dyes currently play an indispensable role in our daily life; they are used in products such as furniture, textiles, and leather accessories. However, the main problems related to the widespread use of these dyes are their toxicity and non-biodegradable nature, which mainly are responsible for various environmental ris...

The current investigation concerns with preparation eco-friendly and cost-effective adsorbent (mesoporous silica nanoparticles (SBL)) based on black liquor (BL) containing lignin derived from sugarcane bagasse and combining it with sodium silicate derived from blast furnace slag (BFS) for thorium adsorption. Thorium ions were adsorbed from an aqueo...

To remove ammonium ions at a low cost, this study utilized Corchorus olitorius leave biosorbents. Various removal parameters are conducted to find the best ammonium removal method. They are the initial ammonium concentration, the adsorbent dose, the contact time, and pH. The fitted equilibrium data were accurately described and analyzed using the F...

Chitosan is a natural polysaccharide with unique properties. It is biocompatible, biodegradable, and non-toxic. Chitosan is a major component in many industries, including water treatment, pharmaceuticals, food, and medicine. Sensors are promising devices due to their merits and applications. Sensors are fabricated from low-cost materials and have...

This book discusses the advances in sensor technologies and sensing efficiency. It highlights different sensor applications, including humidity, gas, fluorescent, biological, optical, radiation, etc. The chapters discuss recycled and biodegradable materials-based sensors as well as sensing techniques and theories. The different approaches employed...

Response surface methodology was successfully utilized to optimize the amounts of carboxymethyl cellulose (CMC) and gum Arab (GA) to fabricate hydrogel beads for the delivery of anticancer drugs. Drug encapsulation efficiency process (%DEE) and cumulative release (%R8h) of hydrogel beads were investigated with different amounts of CMC and GA with F...

Carbon steel is widely used in the petroleum industry for pipelines, storage tanks, and equipment due to its mechanical properties, and strength. However, challenges such as environmental conditions and corrosive materials can affect its lifespan and require maintenance and repair. This work aimed to prepare pyrazalone-sulfonamide hybrids, and conf...

The development of biosensors has gained enormous attention in recent years due to their attractive properties, such as selectivity, sensitivity, stability, and reproducibility. Biosensors are analytical devices that combine biological components and are utilized to detect various chemical substances through physicochemical detectors. Recent advanc...

Environmental sensors are compact, friendly tools that help farmers manage their fields more effectively and avoid crop and plant disease by keeping track of the weather, water, irradiation, and soil moisture levels. Science and technology are committed to developing fresh approaches to addressing pollution levels, water and energy shortages, and c...

The current investigation concerns with preparation eco-friendly and cost-effective adsorbent (mesoporous silica nanoparticles (Mes-Si-NPs)) based on black liquor (BL) containing lignin derived from sugarcane bagasse and combining it with sodium silicate derived from blast furnace slag (BFS) for thorium adsorption. Thorium ions were adsorbed from a...

The photo-degradation of methylene blue (MB) dye solution is studied under UV light irradiation using a TiO 2-Mica composite calcined at 450 °C (TiO 2-M 450). X-ray diffraction (XRD), field-emission scanning electron microscopy (FE-SEM), X-ray photoelectron spectroscopy (XPS), energy-dispersive X-ray analysis (EDX), Fourier transform infrared spect...

Magnetite nanoparticles (Fe3O4) have been utilized to mediate Fumaria officinalis L., a plant known for its rich source of various phytogredients such as diterpenes, nor-diterpenoids, tri-terpenoids, flavonoids, and phenolic acids. These natural compounds act as capping, reducing, and stabilizing agents, offering an affordable and safer approach to...

A crucial hurdle in developing supercapacitors is the creation of metal oxides with nanoscale structures that possess improved chemically active surfaces, ion/charge transport kinetics, and minimized ion-diffusion pathways. A metal-doping strategy to produce oxygen vacancies and increase electrical conductivity has proven effective for designing hi...

Carbon steel is widely used in the petroleum industry for pipelines, storage tanks, and equipment due to its mechanical properties, and strength. However, challenges such as environmental conditions and corrosive materials can affect its lifespan and require maintenance and repair. This work aimed to prepare pyrazalone-sulfonamide hybrids, and conf...

Recently, processed foods have become an important part of human eating habits. However, several processing techniques, such as dehulling and roasting, are applied to raw foods. Roasting is a thermal process that depends on temperature and time and improves the extraction yield of oil by generating pores in the oilseed cell walls. Sesame (Sesamum i...

Recently, processed foods have become an important part of human eating habits. However, several processing techniques, such as dehulling and roasting, are applied to raw foods. Roasting is a thermal process that depends on temperature and time and improves the extraction yield of oil by generating pores in the oilseed cell walls. Sesame (Sesamum i...

The accumulation of heavy metals in aquatic environments is a significant environmental threat. Among the available methods for their removal, adsorption using nanofiber has been proven to be the most effective approach. The unique architecture of nanofibers provides them with intriguing features, such as high specific surface area and pore density...

Nowadays, synthetic polymers (plastics) are unavoidable as they are used in nearly every sector in our daily life, including bottles, packaging, boxes, households, cars, medical devices, and phones, to name a few. The sustained consumption of these materials will cause a tremendous accumulation of plastic waste in land and water bodies based on syn...

Carbon nanotubes are unique nanomaterials with excellent physicochemical properties commonly used in energy, sensing, biomedical field, and environmental remediation. However, CNTs are inevitably released into the environment while rapidly developing. They are toxic to living organisms in the environment and are problematic to degrade under normal...

This chapter explores the applications of genetically engineered bacteria in bioremediation. Bioremediation is a low-cost and environmentally friendly process instead of physiochemical-based techniques, which are less eco-friendly and life-threatening. Although some bacteria were employed to biodegrade toxic chemicals, their ability to metabolize i...

This chapter covers the fundamentals of the biodegradation process, including its importance and impacts on many strategic areas, such as the environment, health, industry, technology, food, and agriculture. The future trends in this area were also discussed. Significant advancements have been achieved in biomaterials in the last few decades. These...

The energy generation can be clean and sustainable if dependent on renewable resources. The prominent energy usage from renewable resources can occur only when efficient energy storage devices are developed. The batteries and supercapacitors have captured the energy market, but the run for smart electronics has leftover with the accumulation of e-w...

Lead ions are an efficient neurotoxic metal that results in serious disorders for human beings, including poisoning, kidney and liver disorders, hepatitis, anaemia, encephalopathy, and nephritic syndrome. The low-cost and eco-friendly biocomposite from Zea mays sponge (ZMS) biomass encapsulated using Na-alginate in the cross-linked matrix (ZMS/Na-a...

Recently, the green synthesis of nanomaterials has grown in popularity and has become one of the most used approaches. Plant extracts are safe for the environment and could be cost-effective for nanoparticle preparation. Silver nanoparticles (AgNPs) have been synthesized using aqueous extracts of Nigella sativa (N. sativa) seeds. The formation of A...

This study utilizes light adsorbing molecule, phenothiazine (PTZ) to reduce graphene oxide (GO) and functionalize into PTZ-rGO aerogel (PTZ-rGO). The UV excited PTZ reduces GO via electron transfer while PTZ is simultaneously oxidized and functionalized onto rGO to produce PTZ-rGO aerogel. The optimum incorporation of PTZ on rGO sheets renders good...

Nowadays, synthetic polymers (plastics) are unavoidable as they are used in nearly every sector in our daily life, including bottles, packaging, boxes, households, cars, medical devices, and phones, to name a few. The sustained consumption of these materials will cause a tremendous accumulation of plastic waste in land and water bodies based on syn...

Microplastic is an emerging pollutant causing trouble worldwide due to its extensive distribution and potential hazards to the ecological system. Some fundamental questions about micro-plastics, such as their presence, source, and possible hazards, remain unanswered. These issues develop because of a lack of systematic and comprehensive microplasti...

The necessity for further growth in the demand for electricity, particularly in the remote countryside, has been essential to Algeria’s economic and social progress in recent years. The Saharan regions account for around 80% of Algeria’s surface and have significant power demands. These areas are distinguished by their scattered population, extreme...

The necessity for further growth in the demand for electricity, particularly in the remote countryside, has been essential to Algeria’s economic and social progress in recent years. The Saharan regions account for around 80% of Algeria’s surface and have significant power demands. These areas are distinguished by their scattered population, extreme...

To satisfy global energy demands and decrease the level of atmospheric greenhouse gases, alternative clean energy sources are required. Hydrogen is one of the most promising clean energy sources due to its high chemical energy density and near-zero greenhouse gas emissions. A single alloyed phase of Pd/Pt nanoclusters as quantum dots (QDs) was prep...

Glycopolymer materials have emerged as a significant biopolymer class that has piqued the scientific community's attention due to their potential applications. Recently, they have been found to be a unique synthetic biomaterial; glycopolymer materials have also been used for various applications, including direct therapeutic methods, medical adhesi...

Due to the increased demand and importance of essential oils in medicinal applications, advanced essential oil extraction techniques have been employed. Both conventional hydrodistillation (HD) and microwave-assisted hydrodistillation (MAHD) were employed to extract the essential oils from the hibiscus flower. Extraction time and solvent polarity w...

This chapter covers the fundamentals of the biodegradation process, including its importance and impacts on many strategic areas, such as the environment, health, industry, technology, food, and agriculture. The future trends in this area were also discussed. Significant advancements have been achieved in biomaterials in the last few decades. These...

The energy generation can be clean and sustainable if dependent on renewable resources. The prominent energy usage from renewable resources can occur only when efficient energy storage devices are developed. The batteries and supercapacitors have captured the energy market, but the run for smart electronics has leftover with the accumulation of e-w...

Carbon nanotubes are unique nanomaterials with excellent physicochemical properties commonly used in energy, sensing, biomedical field, and environmental remediation. However, CNTs are inevitably released into the environment while rapidly developing. They are toxic to living organisms in the environment and are problematic to degrade under normal...

Recent advancements in separation and membrane technologies have shown a great potential in removing oil from wastewaters effectively. In addition, the capabilities have improved to fabricate membranes with tunable properties in terms of their wettability, permeability, antifouling, and mechanical properties that govern the treatment of oily wastew...

This study deals with the preparation and corrosion inhibition investigations of pyrazoline-sulfonamide hybrid, namely 4-((3-methyl-5-oxo-4,5-dihydro-1H-pyrazol-4-yl)diazenyl) benzene sulfonamide 4. Elemental analysis, Fourier transform infrared spectroscopy, 1H nuclear magnetic resonance (1H NMR), and 13CNMR spectra investigated the pyrazoline-sul...

This chapter explores the applications of genetically engineered bacteria in bioremediation. Bioremediation is a low-cost and environmentally friendly process instead of physiochemical-based techniques, which are less eco-friendly and life-threatening. Although some bacteria were employed to biodegrade toxic chemicals, their ability to metabolize i...

This Handbook discusses the recent advances in biodegradation technologies and highlights emerging sustainable materials, including environmentally friendly nano-based materials for replacing plastics. This Handbook is useful to scientists, engineers, biologists, medical doctors and provides alternative eco-friendly materials to replace the ordinar...

Thermal remediation technologies are fast and effective tools for the remediation of contaminated soils and sediments. Nevertheless, the high energy consumption and the effect of high temperature on the soil properties may hinder the wide applications of thermal remediation methods. This review highlights the recent studies focused on thermal remed...

Agriculture and industrial wastes (AIWs) have attracted much attention because of their huge environmental, economic, and social impacts. AIWs have been considered a crucial link of a closed-loop for the fabrication of nanomaterials and composites wherein they replace traditional resources with sustainable waste in waste management. In this context...

In this study, we used density functional theory (DFT) and natural bond orbital (NBO) analysis to determine the structural, electronic, reactivity, and conformational features of 2,5,5-trimethyl-1,3,2-di-heteroatom (X) phosphinane-2-sulfide derivatives (X = O (compound 1), S (compound 2), and Se (compound 3)). We discovered that the features improv...

Agriculture and industrial wastes (AIWs) have attracted much attention because of their huge environmental, economic, and social impacts. AIWs have been considered a crucial link of a closed-loop for the fabrication of nanomaterials and composites wherein they replace traditional resources with sustainable waste in waste management. In this context...

There is a wide range of refractory and electrical applications where magnesia is firmly established. In the current manuscript, the effect of MnO doping on linear and nonlinear optical traits of MgO was investigated. (MgO)1-x(MnO)x(x=0,0.05,0.1) nanocomposites were synthesized via a green method using Starch powder. The XRD results showed that all...

As in many countries worldwide, deterioration of quality of water in Morocco’s natural reserves continues, such that an inventory of qualities of these reserves has become necessary. Based on statistical analyses of the data collected by measuring nineteen physicochemical variables, and applying an index, the comprehensive pollution index, to those...

Clean and renewable energy production techniques are still a big challenge to be met in the coming generations’ required energy. Dye-sensitized solar cells (DSSCs) and perovskite solar cells (PSCs) have significant interest owing to their outstanding total performance and relatively lower cost than silicon-based solar cells. The design of the struc...

Polymer materials have attracted the interest of researchers in recent years as electrode materials and electrolytes for a variety of energy applications such as supercapacitors, batteries, fuel cells, solar cells, and electrochromic devices. Over the last few decades, there has been a great deal of research into the potential applications of these...

Wet chemistry was used to produce copper oxide nanoparticles (CuO NPs). The results indicated that most nanoparticles were bacillus shaped and relatively uniform in size (less than 30 nm). The effect of synthesized CuO NPs on wheat (Triticum aestivum L.) germination and growth parameters was studied and compared to bulk Cu. The results showed that...

A membrane composed of polyethylene terephthalate nanofiber and multi‐walled carbon nanotubes (PET NF‐MWCNTs) composite is used to adsorb methylene blue (MB) dye from an aqueous solution. Scanning electron microscopy, Fourier transform infrared spectroscopy, and X-ray diffraction techniques are employed to study the surface properties of the adsorb...

Numerous reports on wastewater treatment techniques using polymer/clay nanocomposites (PCNs) are available in the literature. However, many of these endeavors are confined in enumerates the various efforts in the field. Thus, this work offers informative, direct, and straightforward insight into the topic by highlighting the research advances made...

This study aims to synthesize a new series of nanolayered double hydroxides (LDHs) containing zinc, cobalt, aluminum, and iron and study the influence of divalent cations (Zn2+, Co2+) in the composition on LDHs structure. The LDHs samples were prepared by coprecipitation by controlling the pH of the solution. Various analytical techniques have been...

This study focuses on detecting and evaluating the adulteration in nut oil, which can cause health and food dangers. The two adulterants used during this study are cheaper vegetable oils and present a similar property with walnut oil, sunflower oil with a falsification percentage of 5.80–31.95%, and rapeseed oil with 4.33–29.37%. This adulteration...