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      저자 : Muhammad Akhyar Farrukh (검색결과 2 건)
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        Photodegradation of 2,4,6-trinitrophenol catalyzed by Zn/MgO nanoparticles prepared in aqueous-organic medium

        Muhammad Akhyar Farrukh,Shaista Ali,Muhammad Khaleeq-ur-Rahman 한국화학공학회 2013 Korean Journal of Chemical Engineering Vol.30 No.11

        Synthesis of Magnesium oxide (MgO) nanoparticles and zinc deposited magnesium oxide (Zn/MgO) nanoparticles was carried out using hydrothermal and deposition-precipitation method with the variation of 1-Propanol (organic solvent) concentration, sodium hydroxide and urea concentration. The nanoparticles were characterized by using FTIR, TGA, SEM-EDX, TEM and XRD. The photocatalytic efficiency of MgO and Zn/MgO nanoparticles was studied by degradation of 2,4,6-trinitrophenol (TNP), which is highly acute and toxic and causes skin and eyes diseases, liver malfunction and tumor formation. Photodegradation of TNP was carried out under UV irradiation and confirmed by using HPLC and GC-MS. MgO and Zn/MgO nanoparticles that were synthesized by using urea showed higher firstorder rate constant (k) value and percentage degradation as compared to nanoparticles that were synthesized using NaOH. It was observed that the concentration of solvent has direct relation with the k value of degradation of TNP.

      • KCI등재

        Green Synthesis of Fe2O3 Nanoparticles from Orange Peel Extract and a Study of Its Antibacterial Activity

        Mohsan Bashir,Shaista Ali,Muhammad Akhyar Farrukh 한국물리학회 2020 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.76 No.9

        An eco-friendly and economical, green synthesis method has been employed for the synthesis of iron-oxide (Fe2O3) nanoparticles by using orange peel extract as a stabilizing agent. The thermodynamic properties were evaluated using thermogravimetric analysis-diffraction scanning calorimetry (TGA-DSC), the formation of Fe2O3 nanoparticles was confirmed using fourier transform infra-red spectroscopy (FTIR), X-Ray diffraction (XRD) and scanning electron microscopy-energy dispersive X-ray (SEM-EDX) spectroscopy. The hydrodynamic diameter was observed using a dynamic laser scattering-particle size analyser (DLS-PSA). The green synthesized nanoparticles were used to evaluate their antibacterial activity via the agar well diffusion method against gram positive (Bacillus subtilis, Staphylococcus aureusb) and gram negative (Escherichia coli., Pseudomonas aeruginosa) bacteria while keeping benzalkonium chloride, chlorhexidine, hexachlorophene and phenol as controls.

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