کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6664118 | 1427043 | 2018 | 34 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Simultaneous adsorption of silver nanoparticles and silver ions on large pore mesoporous silica
ترجمه فارسی عنوان
جذب همزمان نانوذرات نقره و یونهای نقره بر روی سیلیس سیلیکا مزوپور
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کلمات کلیدی
سیلیس مایع منسجم زیاد، تعادل جذب، سینتیک جذب، نانوذرات نقره، یون های نقره ای،
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
چکیده انگلیسی
Large pore mesoporous silica was synthesized using citric acid as template and modified with mercaptopropyl trimethoxysilane. The MP-Silica exhibited a surface area of 474â¯m2â¯gâ1 with an average pore diameter of 11â¯nm (pore diameter ranging from 2 to 30â¯nm). The material was used in the adsorption of silver ions, AgNPs and simultaneous adsorption of these silver species was also observed. The adsorption of silver ions occurred rapidly and followed a pseudo-second order kinetic model. The adsorption equilibrium of silver ions could be described with a Langmuir isotherm and the maximum adsorption capacity was found to be 114.9â¯mgâ¯gâ1. In the mixture of AgNPs and silver ions, the adsorption of AgNPs followed a pseudo-second order kinetic model and took place more slowly compared to silver ions due to their larger size. The MP-Silica exhibited a maximum adsorption capacity of 91.9â¯mg AgNPs gâ1 in the mixture. The adsorption of silver species on MP-Silica occurred through chemisorption via the coordination of these species with thiol groups on the surface. The removal of silver species from wastewater samples and consumer products by MP-Silica was demonstrated.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Environmental Chemical Engineering - Volume 6, Issue 1, February 2018, Pages 596-603
Journal: Journal of Environmental Chemical Engineering - Volume 6, Issue 1, February 2018, Pages 596-603
نویسندگان
Uma Pongkitdachoti, Fuangfa Unob,