期刊
APPLIED SURFACE SCIENCE
卷 320, 期 -, 页码 10-20出版社
ELSEVIER
DOI: 10.1016/j.apsusc.2014.08.182
关键词
Plasma; Amidoxime; Uranium(VI); Carbon nanotubes; Sorption
类别
资金
- National Natural Science Foundation of China [91226108, U1330125]
- Ph.D. Programs Foundation of Ministry of Education of China [20110181120001]
- National Fund of China for Fostering Talents in Basic Science [J1210004]
- Open Project Foundation of the Key Laboratory of Radioactive Geology and Exploration Technology Fundamental Science for National Defense (East China Institute of Technology) [REJT1216]
- Principal's Fund of East China Institute of Technology [DHXK1017]
A novel solid-phase extractant, amidoxime-grafted multiwalled carbon nanotubes (AO-g-MWCNT5), has been synthesized using plasma techniques to selectively separate uranium from nuclear industrial effluents. The adsorbent was characterized by Fourier transform infrared spectra (FT-IR), elemental analysis, Raman, scanning electron microscopy (SEM), and thermal gravity analysis (TGA). Sorption behaviors of uranium(VI) on AO-g-MWCNTs were investigated by varying pH, contact time, initial uranium concentration, and temperature. An optimum sorption capacity of 145 mg g(-1) (0.61 mmol g(-1)) for U(VI) was obtained at pH 4.5. X-ray photoelectron spectroscopy (XPS) has been used to explore the sorption mechanism of U(VI) on AO-g-MWCNTs. Furthermore, AO-g-MWCNTs could selectively adsorb U(VI) in aqueous solution containing co-existing ions (Mn2+, Co2+, Ba2+ and Cs+). This study shows that AO-g-MWCNTs are potential adsorbent for effective removal of U(VI) from aqueous solution. (C) 2014 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据