فهرست مطالب

Journal of Applied Organometallic Chemistry
Volume:3 Issue: 4, Nov 2023

  • تاریخ انتشار: 1402/08/10
  • تعداد عناوین: 6
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  • A. Mohamed Sikkander *, Fatma Bassyouni, Khadeeja Yasmeen, Sangeeta Mishra, V.Vidya Lakshmi Pages 255-267
    The consumption of microorganisms proposed to connect metal nanoparticles is in the glow of advertising of modern nanotechnology. Performs as a biodegradable and joyful loom, designed for the assembly of nanoparticles, appreciations to which it is necessary for squat, ecological compatibility, reduced production expenses, the scalability, and stabilization of nanoparticles are compared in bodily and chemical combination. Biologically connected metal nanoparticles are almost all well-organized miniaturized, usable resources constructed and designed to perform precise functions in the company of enormous prospects. Microbes include this amazing competence towards appearance, such delicate nanostructures. This studies the exercise information of organic combination of zinc oxide and lead nitrate nanoparticles as a result of microbes. Microorganisms engage in recreation directly or indirectly in more than a few biological behaviors because metals present in soil are in constant relation to biological components. In the current study, the reported microbiological combination of nanomaterials uses organic ingredients, primarily prokaryotes and eukaryotes, such as bacteria and fungi (Escherichia coli and Aspergillusniger). Bacterial and fungal cell buildup is questioned among two different chemical salts (ZnO and Pb (NO3)2) together with metal nanoparticles should be effectively synthesized.
    Keywords: Nano-materials, Prokaryotes, eukaryotes, Climate Changes, phytochemicals, Eco-friendly, Antioxidant
  • Salwa El Baakili, Abdelhabib Semlali, Khalil El Mabrouk, Meriame Bricha * Pages 268-283
    This study used sol-gel and hydrothermal methods to prepare binary bioactive glasses (BG) of SiO2-CaO with 63% and 37% molar fractions, respectively. Different techniques characterized heat-treated powders: Thermogravimetric analysis (TGA), Fourier-transformed infrared spectroscopy (FTIR), X-ray diffraction (XRD) analysis, inductively coupled plasma-atomic emission analysis (ICP-AES), solid-state nuclear magnetic resonance (NMR), scanning electron microscopy and energy dispersive spectroscopy (SEM-EDS), and Brunauer-Emmett-Teller analysis (BET). According to both synthetic routes, the HT technique presented better new apatite layers deposition on BG particles during in vitro bioactivity assessment in simulated body fluid (SBF). The bioactivity is confirmed by XRD analysis, NMR spectroscopy, and BET analysis showing that HT-derived bioactive glass (BG-HT) presents higher bioactivity than sol-gel-derived BG (BG-SG), and the nanometric particle size of HT-BG (90-100 nm) with a high specific surface area is responsible for this enhancement. Furthermore, NMR spectroscopy indicates the higher network connectivity of HT-derived bioactive glass due to different environments in this structure. Moreover, SEM-EDS micrographs of BG-HT glasses show spherical nanoparticles, while BG-SG results present a mixture of spherical and rod-like microparticles. The HT-BG could be a promising material for biomedical applications, especially in drug delivery and ion release.
    Keywords: Structural properties, bioglass, Solid-state NMR, Sol-Gel, Hydrothermal, Bioactivity
  • Rabid Ullah *, Toheed Ullah, Nadeem Khan Pages 284-293
    The presence of heavy metals in water makes water unfit for use and causes various hazardous health problems. This research investigates the physical and chemical properties of the collected industrial effluent samples of different industries and the use of burnt potato peels (BPP) as adsorbents to remove heavy metal ions from industrial effluents. Various parameters such as pH, adsorbent volume, and contact time were investigated. The concentration of heavy metal ions was accurately quantified using complexometric titration and atomic absorption spectroscopic analyses. Various heavy metals such as Co+, Mg+, Fe+, Pb+, and Cd+ were found in the samples with varying concentrations. The burnt potato peels showed the maximum adsorption of about 61% at pH 9, 60 min contact time, 0.5 g of burnt potato peels, and 10 mg/L of sample concentration.
    Keywords: Bio-adsorbent, Burnt potato peels, Complexometric titration, Adsorption
  • Saba Ibrar, Ernest O. Ojegu, Ogo B. Odia, IMOSOBOMEH IKHIOYA *, Shahbaz Afzai, Muhammad Oneeb, Ishaq Ahmad Pages 294-307
    Zeolitic imidazolate frameworks (ZIF-8 and ZIF-67) were synthesized for energy storage by utilizing cobalt (II) nitrate hexahydrate, zinc nitrate hexahydrate, and 2-methyl imidazole. The redox peaks in the CV plots showed the existence of faradaic processes. The specific capacitance of ZIF-8 and ZIF-67 reduces with an increase in scan rate. ZIF-8 and ZIF-67 have estimated specific capacitances of 625, 312, 208, 156, and 125 F/g and 932, 468, 312, 234, and 187 F/g at scan rates of 10 to 50 mV/s. ZIF-8 and ZIF-67 have electrolyte resistances of 1.25 and 1.15 Ω, respectively, with active electrode resistances of 0.03 and 0.02 Ω. Great capacitive performance was indicated by the low charge transfer resistance seen in the Nyquist plots. Both ZIF-8 and ZIF-67 have estimated specific capacitances of 276.91 F/g according to the GCD tests. ZIF-8 and ZIF-67 had an energy density of 7999.89 when the current density was 2.0 A/g. ZIF-8 and ZIF-67 nanocrystals differ in their XRD patterns, as the structure of ZIF-8 remains intact. The nanoparticles exhibit high crystallinity, as evidenced by the distinct peaks observed, particularly the sharp (001) peak at 7.4o. The high-pitched and defined peak at the 2θ position of 7.6° confirmed the crystalline nature of synthesized ZIF-67. The (011) crystal plane was identified as the source of the intense peak at 2θ position 7.6°. The bandgap value of ZIF-67 is 3.27 eV, in contrast to ZIF-8 which has a value of 3.0 eV.
    Keywords: ZIF-8, ZIF-67, Energy density, Power Density, EIS
  • Fawad Ali, Imtiaz Ahmad, Azmat Hussain, Sadeeq Ahmad, Muhammad Zaka Ansar, Yahaya Adezuka, Imosobomeh L. Ikhioya * Pages 308-320
    To synthesize ErCuNiO3, a 0.1 M solution of copper nitrate trihydrate (Cu(NO3)2·3H2O), nickel (II) nitrate hexahydrate Ni(NO3)2·6H2O, and sodium hydroxide (NaOH) were used. The (111) diffraction peak reveals the crystallization of the synthesized material. The presence of erbium in the CuNiO3 lattice enhances the structure of the synthesized material, resulting in increased diffraction peaks. The synthesized ErCuNiO3 reveals a cubic structure with diffraction peaks of (111), (101), (104) (112), (211), (222), and (311) corresponding to 2theta angle of 26.512o, 30.778o, 32.054o, 33.775o, 37.726o, 43.966o, and 44.989o, respectively. Introducing erbium into the lattice of the synthesized material results in an increase in the nanoparticle's size, increasing the surface area of the material. This increase in surface area enhances the material's photovoltaic activities. As the molar concentration of the material increases, the synthesized ErCuNiO3 film exhibits a decrease in its indirect bandgap energy, which shifts from 1.50 eV to a range of 1.35-1.18 eV. The film exhibited a decrease in electrical conductivity, from 9.77 to 5.78 S/m, as its thickness increased from 107.00 to 115.35 nm, leading to an increase in resistivity from 10.23 to 17.35 ῼ.cm.
    Keywords: Erbium, Bandgap, Hydrothermal, Crystallite Size, FTIR
  • Emmanuel Edache *, Adumu Uzairu, Paul Mamza, Gideon Shallangwa, Muhammad Ibrahim Pages 321-345
    Coronavirus disease 2019 (COVID-19) is a pandemic disease caused by the SARS-coronavirus-2, which has a high rate of infection. Regardless of the advancements made in the creation of vaccines, it is urgently necessary to identify antiviral substances that can more effectively combat the SARS-coronavirus-2. The SARS-coronavirus-2 main protease is essential for viral transcription and replication. Using molecular docking, molecular dynamics simulation, and free binding energy calculations based on molecular mechanics/generalized Born surface area (MM/GBSA) approaches, an in silico technique was used in this study to help clarify the inhibitory potential of (N-(4-carbamoylphenyl)-8-cyclopropyl-7-(naphthalen-1-ylmethyl)-5-oxo-2,3-dihydro-[1,3]thiazolo[3,2-a]pyridine-3-carboxamide (aka, compound 36) against the main protease of SARS-coronavirus-2. Four software programs: AutoDockFR, AutoDock Vina v1.2.3, CABS-Flex2.0, and fastDRH servers were used to investigate the proteins binding sites, docked the ligands into the crystal structure of SARS-coronavrus-2 Mpro, check the stability of the complexes using molecular dynamics simulations, and MM/GBSA calculations, respectively. The standard drugs have all shown positive interactions with the main protease of the virus, but compound 36 has the highest negative binding affinity of them all. Computer-aided drug design was used to create a few compound 36 derivatives, and pharmacokinetic studies and molecular docking studies were conducted to assess their drug-like characteristics. These compounds (D3 and D6) have better binding affinities than the template and the conventional drugs. The top-scoring conformational complexes were subjected to molecular dynamics (MD) simulations in the following section of the study to further examine the complexes stability and the interactions between the ligand and receptor. The MM/GBSA further demonstrated that net free binding energies were primarily raised by Van der Waals interactions. The present investigation serves as a foundation for investigating the improved binding capacities and structural characteristics of SARS-CoV-2 Mpro variants to develop fresh anti-viral drugs.
    Keywords: SARS-coronavirus-2 Mpro, Docking simulations, ADME, Molecular dynamics simulations, MM, GBSA calculations