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کاربرد نوع شرط:
- جایگاه : پژوهشی
- مجله: Quarterly Journal of Applied Chemical Research
- نوع مقاله: Journal Article
- کلمات کلیدی: Nitrate removal,Magnetic nanoparticles,Nanofiber composite,Recycled polystyrene
- چکیده:
- چکیده انگلیسی: This project is aimed at preparation of nano filters using recycled foam of food containers
enriched by magnetic nanoparticles, for nitrate removal from water. The characterization of
this electrospun magnetic nanofiber depicted a high capacity for nitrate adsorption. The
Scanning Electron Microscopy (SEM), X-Ray powder Diffraction (XRD), Energy Dispersive
Spectrometry (EDAX) and Inductively Coupled Plasma (ICP) had been applied for this
survey. In addition, magnetic behavior of nanoparticles was evaluated by magnetization
measurements. The functionality of designing filter against affecting parameters along with
the relation of these parameters with each other on the removal efficiency of nitrate was
evaluated. It is concluded from the results that the height of the nano filter and the amount of
magnetic nanoparticles has the most significant effect on the nitrate removal from water
among all other factors. Therefore, optimization techniques can assist to achieve highest
efficiency.
- انتشار مقاله: 03-10-1396
- نویسندگان: Elham Ezzatzadeh,Masoumeh Meskinfam Langroudi,Farhad Jokari Sheshdeh
- مشاهده
- جایگاه : پژوهشی
- مجله: Asian Journal of Green Chemistry
- نوع مقاله: Journal Article
- کلمات کلیدی: Ag supported,β-azido alcohols,Ring Opening,Regioselective,Lewis acid
- چکیده:
- چکیده انگلیسی: In this study, we synthesized Ag supported on hydroxyapatite-core-shell-γ-Fe2O3 nanoparticles (γ-Fe2O3@HAp-Ag NPs) as a new, lewis acid, and reusable heterogeneous nancatalyst. Then, it was successfully used for the synthesis of β-azido alcohols and β-thiocyanohydrins from the regioselective conversation of some epoxides by azide and thiocyanate anions in water. The reaction afforded the corresponding products with high regioselectivity under mild reaction conditions.
- انتشار مقاله: 18-09-1397
- نویسندگان: Issa Amini,Vahid Azizkhani,Elham Ezzatzadeh,Kaushik Pal,Sobhan Rezayati,Mohammad Hossein Fekri,Parisa Shirkhani
- مشاهده
- جایگاه : پژوهشی
- مجله: Asian Journal of Green Chemistry
- نوع مقاله: Journal Article
- کلمات کلیدی: Green synthesis,Fe3O4-NPs,MIC,MBC,Persea Americana
- چکیده:
- چکیده انگلیسی: The biological synthesis of NPs using plant extracts plays an important role in the field of nanotechnology. In this study, magnetite nanoparticles (Fe3O4 NPs) were synthesized using a rapid, single step and completely green biosynthetic method by reducing ferric chloride hexahydrate and ferrous chloride tetrahydrate solution with Persea Americana leaf aqueous extract containing flavonoids and phenolic compounds as the main factor which acts as the reducing agent and efficient stabilizer. The structural and properties of the Fe3O4 NPs were investigated by UV-visible spectroscopy, fourier transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), scanning electron microscopy (SEM),transmission electron microscopy (TEM) and vibrating sample magnetometry (VSM). Moreover, the antimicrobial properties of Fe3O4 NPs were confirmed using the disk diffusion test and minimum inhibitory concentration and minimum bactericidal concentration on Staphylococcus aureus and Escherichia coli. The obtained results of disk diffusion test indicated that Fe3O4 NPs prevented the bacterial growth. Additionally, the obtained results demonstrated that the minimum inhibitory concentration and minimum bactericidal concentration of Fe3O4 NPs for Staphylococcus aureus were 12.5 mg/mLandfor Escherichia coli were 6.25 mg/mL. The findings of this study showed that Fe3O4 NPs can be used to inhibit the mentioned bacteria.
- انتشار مقاله: 11-08-1397
- نویسندگان: Sirous Seifi Mansour,Elham Ezzatzadeh,Roya Safarkar
- مشاهده