کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7842430 | 1506511 | 2018 | 54 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Green synthesis of plant supported CuAg and CuNi bimetallic nanoparticles in the reduction of nitrophenols and organic dyes for water treatment
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Green synthesis of plant supported CuAg and CuNi bimetallic nanoparticles in the reduction of nitrophenols and organic dyes for water treatment Green synthesis of plant supported CuAg and CuNi bimetallic nanoparticles in the reduction of nitrophenols and organic dyes for water treatment](/preview/png/7842430.png)
چکیده انگلیسی
In the present study, ginger rhizome powder based catalysts were synthesized for the reduction of 2ânitrophenol (2-NP), 4ânitrophenol (4-NP), methyl orange (MO), congo red (CR), and rhodamine B (RhB). Three different bimetallic catalysts copper-silver (Cu-Ag/GP), copper-nickel (Cu-Ni/GP) and nickel-silver (Ni-Ag/GP) loaded on ginger powder were prepared via novel and robust adsorption method. The size, morphology and structure of the synthesized catalysts were measured through X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), and energy dispersive X-ray spectroscopy (EDX). Cu-Ag/GP and Cu-Ni/GP exhibit outstanding catalytic activity for the reduction of all tested organic compounds. Turnover frequency of Cu-Ag/GP in the case of 2-NP and 4-NP were outstanding and reached 45.86 and 81.34Â hâ1, respectively, while for Cu-Ni/GP, it was 27.16 and 85.83Â hâ1 for 2-NP and 4-NP respectively. For Cu-Ag/GP catalyst the rate constants were 1.21Â ÃÂ 10â3Â sâ1, and 4.05Â ÃÂ 10â3Â sâ1 for 2-NP and 4-NP respectively, while for Cu-Ni/GP, it was 1.11Â ÃÂ 10â3Â sâ1, and 6.08Â ÃÂ 10â3Â sâ1 for 2-NP and 4-NP respectively. The prepared catalysts were also used for the reduction of a mixture of dyes and NPs. Besides, the synthesized catalysts showed excellent reusability and stability.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Molecular Liquids - Volume 260, 15 June 2018, Pages 78-91
Journal: Journal of Molecular Liquids - Volume 260, 15 June 2018, Pages 78-91
نویسندگان
Muhammad Ismail, M.I. Khan, Sher Bahadar Khan, Murad Ali Khan, Kalsoom Akhtar, Abdullah M. Asiri,