Synthesis of Porous Hierarchical MgO and Its Superb Adsorption Properties

被引：226
作者：
Tian, Peng [1 ]
Han, Xiu-ying [1 ]
Ning, Gui-ling [1 ]
Fang, Hai-xia [1 ]
Ye, Jun-wei [1 ]
Gong, Wei-tao [1 ]
Lin, Yuan [1 ]
机构：
[1] Dalian Univ Technol, Sch Chem Engn, State Key Lab Fine Chem, Dalian 116024, Peoples R China
来源：
ACS APPLIED MATERIALS & INTERFACES | 2013年 / 5卷 / 23期
基金：
中国国家自然科学基金;
关键词：
porous hierarchical structure; magnesium oxide; Congo red; adsorption; DYE CONGO RED; MAGNESIUM-OXIDE; HYDROTHERMAL SYNTHESIS; REMOVAL; NANOSTRUCTURES; CARBON; PERFORMANCE; SPHERES;
D O I：
10.1021/am403352y
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The porous hierarchical MgO with superb adsorption properties has been synthesized by a facile and scaled-up method. The X-ray powder diffraction, electron microscopy, Fourier transformed infrared, and N-2 adsorption-desorption were carried out to study the microstructure of the as-synthesized precursor and product. It has been demonstrated that the as-prepared MgO has a porous hierarchical structure and a high specific surface area (148 m(2) g(-1)). And the MgO sample exhibited super adsorption properties, with maximum adsorption capacity of 2409 mg g(-1) for Congo red, which is the highest reported value. Moreover, the adsorption process of Congo red on porous hierarchical MgO was systematically investigated, which was found to obey the pseudo-second-order rate equation and Langmuir adsorption model.
引用
收藏
页码：12411 / 12418
页数：8
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