共 48 条
Counterion effects of nickel and sodium dodecylbenzene sulfonate adsorption to multiwalled carbon nanotubes in aqueous solution
被引:208
作者:
Tan, Xiaoli
[1
]
Fang, Ming
[2
]
Chen, Changlun
[1
]
Yu, Shaoming
[3
]
Wang, Xianke
[1
]
机构:
[1] Chinese Acad Sci, Inst Plasma Phys, Hefei 230031, Peoples R China
[2] Chinese Acad Sci, Inst Solid States Phys, Hefei 230031, Peoples R China
[3] Hefei Univ Technol, Coll Chem Engn, Hefei 230009, Peoples R China
来源:
基金:
中国国家自然科学基金;
关键词:
D O I:
10.1016/j.carbon.2008.07.023
中图分类号:
O64 [物理化学(理论化学)、化学物理学];
学科分类号:
070304 ;
081704 ;
摘要:
Batch experiments were conducted to elucidate the adsorption of a widely used anionic surfactant (sodium dodecylbenzene sulfonate (SDBS)) and nickel on multiwalled carbon nanotubes (MWCNTs). Counterion effect on the removal of SDBS and nickel by using MWCNTs was also studied. The microscopic changes of MWCNTs before and after nickel and SDBS adsorption were characterized by scanning electron microscope (SEM) and transmission electron microscope (TEM). X-ray photoelectron spectroscopy (XPS) was performed to study the adsorption mechanism of nickel at a molecular level. The spectroscopic analysis indicated that the adsorption mechanism was mainly attributed to chemical interaction between nickel and the surface functional groups of MWCNTs and surface adsorbed SDBS. The adsorbed SDBS on MWCNTs could lead to the modification of the MWCNT surfaces and partial complexation of nickel with SDBS adsorbed on MWCNTs. MWCNTs are efficient material in the removal of SDBS and nickel from large volume of wastewater. (C) 2008 Elsevier Ltd. All rights reserved.
引用
收藏
页码:1741 / 1750
页数:10
相关论文