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17 articles for “cobalt”
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Synthesis, Structural Elucidation, and Antimicrobial Screening of a Cobalt (II) Coordination Compound Derived from a Thiophene-Containing Schiff Base
Abstract: Abstract An N, O-chelating azomethine Schiff base ligand (HL), chemically identified as 2-{[(thiophen-2-yl) methylidene] amino} benzoic acid, was synthesized by an equimolar condensation reaction between thiophene-2-carbaldehyde and anthranilic acid in absolute ethanol in the presence of a catalytic amount of acetic acid. The corresponding cobalt (II) complex, formulated as [Co(L)₂] · 2H₂O, was prepared by refluxing two equivalents of the ligand with one equivalent of cobalt (II) acetate tetrahydrate in …
Published in International Journal of Analytical and Applied Chemistry · Vol. 12, Issue 2, 2026 · pp. 1–7 Read article
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Preparation and Characterization of Mixed Ligand Complexes of Cobalt(II) and Ni(II) salt of Phthalimide with Some Oxamic Acids
Abstract: The mixed ligand complexes of oxamic acids with Co(II) and Ni(II) salt of phthalimide were prepared, where oxm= N-phenyl thio urea oxamic acid(NPTUOA),m-tolumide oxamic acid (m-TOA), N-pyrrazole oxamic acid & phth= Co(II) and Ni(II) salt of phthamlimide. These all mixed ligand complexes examined by their elemental analysis, melting points, UV-visible analysis, I.R studies, magnetic susceptibility measurements and thin layer chromatography. Elemental analysis of the complexes shows 1:2 (Metal:Ligand) stiochiometry for …
Published in International Journal of Chemical Synthesis and Chemical Reactions · Vol. 3, Issue 1, 2017 Read article
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Synthesis, Spectral Study, SEM Analysis and Antibacterial Study of New Indole Azo Ligand and Complexes
Abstract: Azo ligands have developed significantly in recent decades due to their fundamental role in the coordination chemistry of transition elements. Their rapid response to coordination bonding in ligand and complex chemistry, particularly with divalent ions, is a key factor. The azo-bridged bond has played a well-established role in the formation of cobalt, nickel, and copper complexes. In this study, we prepared a novel ligand, an indole derivative bonded to an …
Published in International Journal of Chemical Synthesis and Chemical Reactions · Vol. 12, Issue 1, 2026 · pp. 1–10 Read article
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Synthesis of NiCo2O4 by Hydrothermal Method
Abstract: The synthesis of NiCo2O4 have been carried out by hydrothermal method. Powder x-ray diffraction studies confirmed the formation cubic NiCo2O4. Nickel cobaltite are high in electrical conductivity and has two richer electroactive sites. To some extent, NiCo2O4 is playing an important role in complementing or replacing electrode materials based on NiO, Co3O4 and RuO2 in energy storage field.
Published in International Journal of Composite and Constituent Materials · Vol. 5, Issue 2, 2019 · pp. 23–26 Read article
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Chemical Synthesis, Structural Characterization and Solid-State Chemistry of NiₓCo₁₋ₓFe₂O₄ Ferrite Oxides
Abstract: Ferrite materials have attracted significant attention in recent decades due to their remarkable magnetic, electrical, and catalytic properties. Spinel ferrites, generally represented by the formula MFe₂O₄ (where M denotes a divalent metal ion such as Ni²⁺ or Co²⁺), have attracted significant attention due to their versatile applications in areas including magnetic storage, microwave absorption, sensing technologies, transformers, and catalysis. . In particular, nickel–cobalt mixed ferrites (NiₓCo₁₋ₓFe₂O₄) are of considerable interest …
Published in International Journal of Chemical Synthesis and Chemical Reactions · Vol. 12, Issue 1, 2026 · pp. 1–9 Read article
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Determination of the Concentration of Some Selected Metals in Unripe Plantain (Musa paradisiaca)
Abstract: Plantain (Musa paradisiaca) is a food commonly consumed in Nigeria as boiled, roasted, or fried in its ripe and unripe form. Plantains harvested in Ekpoma, a predominately plantain-growing community, were studied for their mineral and sugar composition level of the unripe. Complexometric titration was used to determine the level of calcium and magnesium, flame photometer was used for sodium and potassium determination while zinc, iron, copper, chromium, manganese, and Co …
Published in International Journal of Chemical Engineering and Processing · Vol. 10, Issue 2, 2024 · pp. 1–4 Read article
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Designing of Permanent Magnet Synchronous Generator for Wind Turbine
Abstract: Our energy crisis in a faster manner, renewable energy resources plays a major role to meet the power demand. Alternative method for energy crisis is renewable energy which is becoming more popular and is currently a hot topic in research and development. Wind energy which is clean source of energy with no cost, and more efficiency has been chosen more preferably than other renewable resources. Wind turbine is a device …
Published in International Journal of Power Electronics Controllers and Converters · Vol. 4, Issue 1, 2018 · pp. 1–8 Read article
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Auxiliary Characterization of (Co, Mn) Co-doped Zinc Oxide Thin Films
Abstract: Cobalt and manganese are both co-doped with zinc oxide films were set up by sol-gel turn covering strategy on quartz substrate by shifting the dopants focus. The result of dopants focus was researched by x-beam diffraction (XRD). The XRD design demonstrates that the kept movies have polycrystalline hexagonal wurtzite structure. SEM micrograph demonstrates the adjustments in morphology of very thin film as dopants fixation are fluctuating. The compositional examination did …
Published in International Journal of Metallurgy and Alloys · Vol. 2, Issue 1, 2016 · pp. 31–35 Read article
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Toward Sustainable Intelligence: A Framework for Green AI Adoption
Abstract: The rapid expansion of Artificial Intelligence has shattered the illusion of the cloud as an ethereal entity, revealing a massive physical infrastructure with a staggering environmental price tag. The traditional Red AI paradigm – where success is measured solely by accuracy through brute-force scaling – has created an unsustainable trajectory. Training a single large-scale model like GPT-3 requires 1,287 MWh of electricity, while the necessary cooling systems evaporate millions of …
Published in International Journal of Distributed Computing and Technology · Vol. 12, Issue 1, 2026 · pp. 17–23 Read article
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Doping and Its Impacts on the Properties of ZnO Nanocrystals: A Brief Review
Abstract: Research on zinc oxide (ZnO) has surged in recent years due to its extensive range of applications because its unique physical and chemical properties make it ideal for various uses, including acoustic devices, photocatalysis, pharmaceuticals, light-emitting diodes, solar cells and antibacterial agents. ZnO nanoparticles are particularly notable for their biocompatibility, low toxicity and stability, making them suitable for drug delivery and antiviral applications. The versatility of ZnO has led to …
Published in International Journal of Chemical Synthesis and Chemical Reactions · Vol. 10, Issue 1, 2025 · pp. 8–25 Read article
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EFFECT OF ALGAE & COAGULANTS ON PHARMACUTICAL EFFLUENT CHARACTERSTICS
Abstract: Pharmaceutical industry effluents may contain many elements including calcium, magnesium, silica, chromium nickel, iron, cobalt, zinc etc. These heavy metals which are produced by the industrial waste are a big threat for the environment. They can also harm the ecosystem. In this study biochemical treatment of algae and coagulants was given to pharmaceutical industry effluent and reduction in polluting parameters was determined. It was observed that in the presence of …
Published in International Journal of Environmental Chemistry · Vol. 5, Issue 1, 2019 · pp. 1–3 Read article
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Eco-friendly Color Production for Holi Celebration: A Mini Review
Abstract: Many synthetic colours formed from chemicals have adverse effects on environment. Biocolours are nowadays used in holi festival. Colours are also becoming integral part of modern day life. Use of colours are becoming a part of our everyday life. There is need of nontoxic colours in order to remove substances like lead, cadmium, chromium and cobalt entering in the food chain. Biocolours are mainly prepared from plant origins. The current …
Published in International Journal of Chemical Synthesis and Chemical Reactions · Vol. 8, Issue 1, 2022 · pp. 7–12 Read article
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Recent Advancement of Nanotechnology in Plant Disease Management
Abstract: Nanoparticles are small size particles having potential to work in large surface area. Size of nanoparticles vary from 1-100 nm. The composition of nano-formulation should break down quickly in the soil and sluggishly in plants with remnant levels under the regulatory standards in foodstuffs. The nanoparticle synthesis methods can be categorized into bottom-up or top-down method Physical- Ball milling, nanolithography, pulsed laser, electrochemical; Chemical- Vaccum deposition and vaporization, chemical vapor …
Published in International Journal of Applied Nanotechnology · Vol. 7, Issue 2, 2021 · pp. 34–42 Read article
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OPTIMIZING MAGNETIC BEHAVIOR OF NANO-CRYSTALLINE CO2CrAl TYPE HEUSLER ALLOY POWDER USING RESPONSE SURFACE METHODOLOGY
Abstract: In the present work, Co2CrAl heusler alloy powder prepared successfully from premix basic powders of Cobalt (Co), Chromium (Cr) and Aluminium (Al) in stoichiometric of 60Co-26Cr-14Al (weight %) by novelistic mechano-chemical route. Mgnetic properties of mechanically alloyed powders were characterized by vibrating sample magnetometer (VSM). The performed experiment has been designed on the basis of 2 factor 5 level response surface methodology. Experimental results were used to develop a mathematical …
Published in International Journal of Energetic Materials · Vol. 6, Issue 1, 2020 · pp. 7–13 Read article
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Enhancing Battery Management Systems: Innovations in State-of-Charge Estimation
Abstract: A Battery Management System (BMS) is crucial for managing the electronics of rechargeable batteries, ensuring their safe and efficient operation. This is particularly important for lithium-ion (Li-ion) batteries, which are preferred in electric vehicles and energy storage systems due to their high energy density, low self-discharge rates, long cycle life, and broad operating temperature ranges. The primary functions of a BMS include monitoring the state of charge (SOC), managing battery …
Published in International Journal of Energetic Materials · Vol. 9, Issue 2, 2023 · pp. 5–11 Read article
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Service temperature attenuated materials
Abstract: Service temperatures in engineering materials have been one of important factors. It alone has not been only controlling variable for creep properties. Useful services from useful materials therefore have been more important within temperature ranges stipulated for certain services. Temperature ranges of interest to materials engineer have been ranged from cryogenic regions (- 200oC) to temperature of a tungsten-filament lamp (2000oC). This article has been description of materials from room …
Published in International Journal of Metallurgy and Alloys · Vol. 5, Issue 2, 2019 · pp. 37–45 Read article
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TiO2 Doped with Noble Metals and Transition Metals: A Review
Abstract: This review article investigates advances in the research of nanomaterials based on titanium dioxide (TiO2) doped with noble metals and transition metals. Initially, we provide an overview of the theory behind TiO2 as the base material and discuss the fundamental principles of nanomaterial doping. Next, we delve into studies on noble metal doping, highlighting recent research that explores the incorporation of noble metals such as gold (Au), silver (Ag), and …
Published in International Journal of Metallurgy and Alloys · Vol. 9, Issue 1, 2023 · pp. 1–12 Read article