Search
91 articles for “Metal Oxide”
-
Assessing trends in Speciation of First-Row Transition Metals in Children's Playgrounds of Owerri, Nigeria
Abstract: Chemical species of metals affect toxicity but trends of these metals species in soils are less studied. This study examined the trends and variability of species of metals in soils from playgrounds within Owerri. Eighty-one composite soil samples from nine playgrounds were collected in dry and rainy season to reflect spatio-seasonal variability. Samples were characterized by standard methods in triplicates and then extracted sequentially. Concentrations of metal species were determined …
Published in International Journal of Green Chemistry · Vol. 11, Issue 1, 2025 · pp. 28–45 Read article
-
Advanced Materials and Protective Coatings for Enhanced Durability in Gas Turbine Engines
Abstract: Abstract Gas turbines are critical in modern power generation and propulsion systems, where high thermal efficiency, performance, and durability are essential. Operating at extreme temperatures and in aggressive chemical environments places significant stress on hot-section components, such as turbine blades, vanes, and combustor liners. To meet these demands, advanced high-temperature materials and protective coatings have been developed to ensure structural integrity, reduce maintenance, and improve operational lifespan. Nickel-based superalloys remain …
Published in International Journal of I.C. Engines and Gas Turbines · Vol. 11, Issue 1, 2025 · pp. 1–6 Read article
-
Treatment of Leachate by Using Solid Waste
Abstract: Abstract Leachate, a hazardous liquid from landfill decomposition, is a significant environmental challenge worldwide. Traditional collection of solid waste: Gather the solid waste material you want to generate leachate from. This waste could include organic matter, plastics, paper, and other materials commonly found in municipal solid waste. Sorting and compressing: Depending on the initial state of the waste, you may need to shred or crush it to increase the surface …
Published in International Journal of Prevention and Control of Industrial Pollution · Vol. 11, Issue 1, 2025 · pp. 43–49 Read article
-
Toxicity of Chromium Metal and its impact on Human health
Abstract: Chromium, a transition metal, plays a vital role as a trace element essential for human metabolism. Its presence in various oxidation states is notable, with the trivalent (Cr(III)) and hexavalent (Cr(VI)) forms being the most common and biologically significant. While Cr(III) is recognized for its involvement in insulin signaling and glucose metabolism, Cr(VI) stands out for its toxicity, posing significant risks to both human health and the environment. The extensive …
Published in International Journal of Chemical Synthesis and Chemical Reactions · Vol. 9, Issue 2, 2023 · pp. 16–20 Read article
-
Analytical Evaluation of heavy metals in eyeshadows: A Risk assessment and Implications for Public Health Regulatory Reforms in Nigeria
Abstract: This study employs advanced analytical techniques to assess heavy metal contamination (Pb, Cd, Cr, Ni, Zn) in 18 commercially available eyeshadow products (local and imported) from Owerri Metropolis, Nigeria. Quantification was conducted using atomic absorption spectroscopy (AAS), while risk evaluations incorporated chemometric modeling approaches. Results revealed significant contamination in locally manufactured brands, particularly those containing calabash chalk (Nzu) as a base ingredient. Lead and nickel concentrations reached 166.58 ± 6.5 …
Published in International Journal of Analytical and Applied Chemistry · Vol. 12, Issue 1, 2026 Read article
-
Geology and Geochemistry of Ilmenite Deposits of Malumfashi Schist Belt, Northwestern Nigeria
Abstract: The geology, geochemistry and the economic potential of Ilmenite occurrence insheet 79 Malumfashi NW is presented in this study. The field and petrographic studies revealed that, the area consists of largely muscovite and carbonaceous schist together with Granite as major rocks. Tourmalinites and quartzite as minor rocks. Numerous quartz veins of various sizes trending NS parallel to the foliation of the schist are present throughout representing a silicification episode. The …
Published in International Journal of Landscape Planning and Architecture · Vol. 5, Issue 2, 2019 · pp. 40–51 Read article
-
Nanocomposite Hydrogels for Water Purification
Abstract: DNA hydrogels have been demonstrated as versatile catalysts, potential adsorbents, sensors and immobilization carriers of bioactive molecules. They are a type of tenuous, semiflexible polymeric network that consists of precisely designed synthetic nucleotide strands as chemical or physical cross-linkers. Hydrogels have been widely studied due to their improved physicochemical properties and used as antibacterial platforms, wastewater pollutants, adsorbents and drug deliverers. Because of their biocompatibility and the ability to mix …
Published in International Journal of Industrial Biotechnology and Biomaterials · Vol. 4, Issue 2, 2018 · pp. 17–21 Read article
-
Revolutionizing Nanoparticle’s Synthesis Through Green Chemistry: A Brief Review
Abstract: Abstract Nanotechnology has experienced remarkable strides in response to the pressing need for environmentally friendly synthesis routes, with a paramount focus on minimizing deleterious by-products. This paradigm shift has galvanized researchers to delve into green biotechnology alternatives, harnessing the potential of plant extracts to reduce metal ions efficiently and yield green nanoparticles. These resultant nanoparticles not only showcase significant potential as antimicrobial agents but also hold profound implications for advancements …
Published in International Journal of Green Chemistry · Vol. 9, Issue 2, 2023 · pp. 26–37 Read article
-
Optimizing Gas Turbine Performance: Preventive Measures and Blade Durability Solutions
Abstract: The article explores the various failure mechanisms and preventive methods related to gas turbine blades, which operate under extreme mechanical and thermal conditions. The increasing demand for energy and efficiency in turbojet engines has led to larger and more complex turbomachines. As gas turbine blades are subjected to high operational temperatures, pressure, and stress, they are prone to multiple failure modes, including fatigue, creep, oxidation, corrosion, and erosion. To mitigate …
Published in International Journal of Renewable Energy and its Commercialization · Vol. 10, Issue 2, 2024 · pp. 36–40 Read article
-
Corrosion Protection of Copper Metal by Nanocoating in Nitrogen dioxide Environment
Abstract: Nitrogen dioxide is an acidic gas. It absorbs moisture to produce nitric acid. It creates corrosive medium for copper metal. It forms corrosion cell on the surface of copper and accelerate corrosion reactions. The corrosion cell formation is written as: Cu|Cu2+||H+|H2 thus corrosion reactions start and copper is oxidized into Cu2+surface and it is oxidized into Cu2+ whereas H+ ion is reduced into H2. Nitric acid environment copper exhibits galvanic, …
Published in International journal of Thermodynamics and Chemical Kinetics · Vol. 8, Issue 1, 2022 · pp. 1–11 Read article
-
Green Nanotechnology Based Analysis & Treatment of Industrial Effluent
Abstract: The research into effluent treatment and recycling is ongoing process. Particularly the development of new methods and technology for nanowaste treatment is a focus of most professionals, scientist and engineers. One of the developments among the emerging technology is the green nanotechnology, which is environmental friendly, affordable and cost effective. This research is an overview of Green nanotechnology based analysis and treatment techniques for an industrial nanowaste is emphasized. Most …
Published in International Journal of Applied Nanotechnology · Vol. 8, Issue 2, 2022 · pp. 15–22 Read article
-
A Study on the Future of Industrial WastewaterTreatment Plant: Trends and Innovations
Abstract: Industrial wastewater treatment plants (IWWTPs) stand at the critical intersection of economic productivity and environmental sustainability. Unlike municipal sources, industrial effluent is characterized by extreme heterogeneity, containing highly variable concentrations of toxic heavy metals, recalcitrant organic compounds, suspended solids, and emerging contaminants. This complexity necessitates bespoke, multistage treatment trains, often combining physical, chemical, and advanced biological methods (e.g., membrane bioreactors, electrochemical oxidation, and anaerobic digestion). This analysis examines the contemporary …
Published in International Journal of Chemical Engineering and Processing · Vol. 11, Issue 2, 2025 · pp. 1–13 Read article
-
Biosensors Powered by Nanotechnology forContinuous Insulin Delivery and GlucoseMonitoring in Diabetes Management
Abstract: Diabetes mellitus is a chronic metabolic disorder that necessitates continuous glucose monitoring and precise insulin delivery for effective management. Traditional methods often fall short in maintaining the necessary levels of accuracy and convenience, thereby posing challenges in achieving optimal glycemic control. Nanotechnology-enabled biosensors have revolutionized this field by leveraging the unique properties of nanomaterials, offering significant improvements in sensitivity, selectivity, and biocompatibility. This article delves deeply into the transformative role …
Published in International Journal of Applied Nanotechnology · Vol. 10, Issue 1, 2024 · pp. 13–24 Read article
-
Nanocoating and Electrospraying Techniques Used for Corrosion Mitigation of Aluminum in Nitrogen dioxide Environment
Abstract: Nitrogen gas absorbs moist air to produce nitric acid. It develops acidic medium for aluminum. It forms a corrosion cell on the surface of aluminum. The formation of corrosion cell is written as: Al|Al+3||H+|H2 thus Corrosion reactions accelerate on aluminum surface and Al is oxidized into Al+3 and the H+ ions is reduced into H2. This acid produces various forms of corrosion in aluminum like galvanic, pitting, stress, crevice, blistering, …
Published in International Journal of Environmental Chemistry · Vol. 6, Issue 2, 2020 · pp. 20–31 Read article
-
Application of a graphene oxide for determination of Cadmium, Lead, Copper and Zinc ions at trace level in personal Care Products using Solid Phase Extraction
Abstract: A novel and simple procedure Solid Phase µ-extraction was successfully used as a sample preparation method for the pre concentration and determination of Cd, Pb, Cu, and Zn in different personal care products samples. In the first screening, a five variables were selected with low (-) and high level (+) and were inspected by Plackett–Burman. In order to further optimization, a central 23 +star orthogonal composite design (CCD) was applied …
Published in International Journal of Analytical and Applied Chemistry · Vol. 6, Issue 1, 2020 · pp. 14–23 Read article
-
Material to Scheme Designation of Flash Memory
Abstract: Subjective has been to study schemes of flash memory achieve from devised formation from magnetic metals. Scriptive has been adhered scopes from usual study matter on magnetic optic (MO) memories. Shallow trench isolation (STI) has been usual procure of grooves on prior allowed device area i.e., before forming IC device on wafer. From where oxidation layer has grown thus electrical separation has pursued in integrated circuit (IC) liable to generate …
Published in International Journal of Computer Aided Manufacturing · Vol. 7, Issue 2, 2021 · pp. 23–29 Read article
-
Review of Silicon Reactivity of Self-assembled monolayer and its Properties
Abstract: In most cases, the assumption of perfect high viscosity between silicon and silver underlies the modelization of silicene on Ag(111). According to recent reports, growth does not take place on top of the Ag(111) terraces, but rather within the first layer of them. In this article, we present the results of a study that combines scanning tunnelling microscopy and density functional theory to simulate the nucleation process and reveal the …
Published in International journal of Thermodynamics and Chemical Kinetics · Vol. 8, Issue 1, 2022 · pp. 29–33 Read article
-
Charge Infusion in Organic Device: With and Without SWCNTs
Abstract: In nanotechnology field, invention of single walled carbon nanotubes (SWCNTs) is a noteworthy development. It creates the door for advanced development in scientific field. Due to their appealing mechanical, electrical, and thermal properties, SWCNTs have multivarious usages. In this work, we have examined and predicted how SWCNT will affect the device performance in which Thionine dye is intercalated between Indium Tin Oxide (ITO) coated glass and aluminium (Al) to form …
Published in International Journal of Polymer Science and Engineering · Vol. 9, Issue 1, 2023 · pp. 26–31 Read article
-
Relevance and Utilization of Copper and Copper Alloys
Abstract: Copper is the oldest metal used by man. It is use dates back to prehistoric times. Copper has been mined for more than 10,000 years with a Copper pendant found in current day Iraq being dated to 8700 BC. By 5000BC Copper was being smelted from simple copper oxides. The combination of physical properties such as strength, conductivity, corrosion resistance, machinability and ductility make Copper suitable for a wide range …
Published in International Journal of Metallurgy and Alloys · Vol. 3, Issue 2, 2017 · pp. 11–16 Read article
-
Cause of a Serious Condition Blasts’ Liquid for Airbag Classification
Abstract: The explosion was fairly strong, and the entire unit was blasted into the air. In front of the airbag, there is a thin layer of plastic casing, which is ripped by the pressure that is developing within during the explosion. The airbags inflate as a result of the explosion. The chemical used in the airbag is sodium azide. These detectors in front of the automobile transmit an electrical impulse to …
Published in International Journal of Energetic Materials · Vol. 8, Issue 1, 2022 · pp. 38–42 Read article