کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1254005 971323 2015 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Supported carbon dots decorated with metallothionein for selective cadmium adsorption and removal
ترجمه فارسی عنوان
نقاط کربن پشتیبانی شده با فلزاتینیون برای جذب و حذف کادمیوم انتخابی
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی (عمومی)
چکیده انگلیسی

Carbon dots are prepared and immobilized onto spherical SiO2 through a one-step thermal oxidation and then decorated with metallothionein (MT), a protein with high affinity towards thiophilic metals. The MT-carbon dots composites are characterized by means of FT-IR, SEM and TGA, giving rise to a MT loading amount of 823 μg g−1. The adsorption of cadmium by the composites is a fast process and follows Langmuir model. In comparison with native SiO2, a 2- and 2.4-folds improvement on the static and dynamic adsorption capacity of the composites for cadmium are obtained, respectively. Moreover, the adsorption efficiency is not affected by the presence of other metals. Finally, the composites are successfully applied for the removal of cadmium in a series of environmental water samples.

A selective and efficient adsorbent for cadmium is prepared by one-step synthesis of supported carbon dots followed by the decoration with metallothionein.Figure optionsDownload as PowerPoint slide

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chinese Chemical Letters - Volume 26, Issue 12, December 2015, Pages 1496–1501
نویسندگان
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