Volume-17 ~ Issue-3 ~ March 2024

Abstract: Kinetics of oxidation of 2, 6 Diphenyl-Piperidine-4-one and 3-Methyl 2, 6 Diphenyl-Piperidine-4-one by Mn (III) in acidic medium reveals that the kinetic orders are first order. The rate of reaction was formed to increase with increase acid concentration. The rate of oxidation of piperidone in aqueous sulphuric acid media is independent of added Mn(II).The results are rational by a mechanism involving intermediate products. The fallowing order of reactivity is observed: 2, 6 Diphenyl-Piperidine-4-one > 3-Methyl 2, 6 Diphenyl-Piperidine-4-one.

Keyword: Kinetics, Oxidation, 2, 6 Diphenyl-Piperidine-4-one and 3-Methyl 2, 6 Diphenyl-Piperidine-4-one, Mn (III), Acid medium

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Abstract: Background: Textile and plastic industries are major sources of tartrazine dye. In industries, dyes are used as colorants in their industrial processes. Tartrazine dye has been reported to cause harm even at trace levels. Material and Methods: This study compared the adsorption of tartrazine dye on raw kaolinite (RK) and kaolinite–zinc oxide composite (KZC). These adsorbent features were determined using X-ray fluorescence (XRF) to determine adsorbent chemical composition, Fourier transformed infrared spectroscopy (FTIR) for functional groups, Scanning electron microscope (SEM) techniques, and Brunauer-Emmett-Teller (BET) was used to determine the structural morphology, surface area respectively. The batch experiment was conducted for the effect of pH at the range of (3 -11), initial tartrazine concentration of (50 - 250 mg/L), adsorbent dose of (0.5 - 2.5 g), contact.......

Keywords: Adsorption, Kaolinte, Kinetic, Isotherm and Thermodynamics

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Abstract: Porous silicon (p-Si) has garnered significant attention in the realms of photovoltaics, biomedicine, and sensor technology due to its unique optical, electrical, and surface properties. Raman microscopy, a non-destructive optical technique that provides detailed information about vibrational, rotational, and other low-frequency modes in a material, stands as a pivotal tool for investigating the microstructural characteristics of p-Si. This article reviews the principles of Raman spectroscopy, its application in elucidating the structural intricacies of porous silicon, and highlights seminal works in the domain.....

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