Modification of Multilayer Carbon Nanotubes for the Removal of Arsenate

被引：0
|
作者：
Liao, Libing [1 ]
Liu, Gin-Lung [2 ]
Jean, Jiin-Shuh [2 ]
Jiang, Wei-Teh [2 ]
Li, Zhaohui [1 ,2 ,3 ]
机构：
[1] China Univ Geosci, Sch Mat Sci & Technol, Beijing Key Lab Mat Utilizat Nonmetall Minerals &, Natl Lab Mineral Mat, Beijing 100083, Peoples R China
[2] Natl Cheng Kung Univ, Dept Earth Sci, Tainan 70101, Taiwan
[3] Univ Wisconsin Parkside, Dept Geosci, Kenosha, WI 53141 USA
来源：
JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY | 2016年 / 16卷 / 04期
关键词：
Acid Treatment; Adsorption; Arsenic; Iron Impregnation; Multilayer Carbon Nanotubes; CHROMATE RETENTION MECHANISMS; LARGE-SCALE SYNTHESIS; ACTIVATED CARBON; DRINKING-WATER; SURFACE COMPLEXATION; IRON; ADSORPTION; KINETICS; FERRIHYDRITE; GROUNDWATER;
D O I：
10.1166/jnn.2016.11897
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
The aim of this study was to explore a new nano-composite carbon adsorbent material for the removal of arsenic from water. The multilayer carbon nanotubes (MCNTs) were treated with different acids and/or modified with iron to create more surface COOH sites or Fe-impregnated MCNTs for the enhanced uptake of As(V). Tests were conducted as a function of initial As(V) concentrations, contact time, and solution pH. The coverage of ferric hydroxides on MCNTs and the uptake of As on Fe-MCNTs were independently confirmed by field emission scanning electron microscope and energy dispersive X-ray spectroscopy analyses. With an As(V) uptake capacities of 27 mg/g on Fe-MCNTs and 14 mg/g on acid-MCNTs, the material showed superior performance for As(V) removal.
引用
收藏
页码：3835 / 3840
页数：6
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