کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5348610 1503622 2015 21 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Bone char surface modification by nano-gold coating for elemental mercury vapor removal
ترجمه فارسی عنوان
اصلاح سطح استخوان توسط پوشش نانو طلا برای حذف بخار جیوه عنصری
کلمات کلیدی
استخوان چارت، نانوذرات طلا، جیوه، نانوکامپوزیت، ساخت.،
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی تئوریک و عملی
چکیده انگلیسی
The present work was done to develop a novel nanocomposite using bone char coated with nano-gold for capture of elemental mercury (Hg0) from air. The morphologies, structures, and chemical constitute of the prepared nanocomposite were evaluated by UV-VIS-NIR, dynamic light-scattering (DLS), X-ray diffraction (XRD), transmission electron microscopy (TEM), Fourier transform infra-red (FTIR) spectroscopy, and energy dispersive X-ray spectroscopy (EDS). The capture performance of nanocomposite was evaluated in a needle trap for mercury vapor. An on-line setup based on cold vapor atomic absorption spectrometry (CVAAS) was designed for Hg0 determination. Dynamic capacity of nanocomposite for Hg0 was shown high efficient operating capacity of 586.7 μg/g. As temperature increases, the dynamic adsorption capacity of the nanocomposite was decreased, which are characteristics of physicosorption processes. It was found that the surface modification of bone char with nano-gold has various advantages such as high operating dynamic adsorption capacity and low cost preparation. It was also demonstrated that the developed nanocomposite is suitable for on-line monitoring of Hg0. It could be applied for the laboratory and field studies.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Surface Science - Volume 342, 1 July 2015, Pages 106-111
نویسندگان
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