γ-AlOOH/Al2O3修饰硅藻土的制备与Cs+、Pb2+吸附性能

引用本文: 郑广伟, 杜玉成, 侯瑞琴, 孙广兵, 王金淑, 吴俊书. γ-AlOOH/Al₂O₃修饰硅藻土的制备与Cs⁺、Pb²⁺吸附性能[J]. 无机化学学报, 2015, (5): 930-938. doi: 10.11862/CJIC.2015.149 shu

Citation: ZHENG Guang-Wei, DU Yu-Cheng, HOU Rui-Qin, SUN Guang-Bing, WANG Jin-Shu, WU Jun-Shu. Fabrication and Highly Efficient Adsorption for Cs⁺ and Pb²⁺ of γ-AlOOH/Al₂O₃ Modified Diatomite[J]. Chinese Journal of Inorganic Chemistry, 2015, (5): 930-938. doi: 10.11862/CJIC.2015.149 shu

γ-AlOOH/Al₂O₃修饰硅藻土的制备与Cs⁺、Pb²⁺吸附性能

郑广伟 ^1, ,
杜玉成 ^{1,
,} ,
侯瑞琴 ^2, ,
孙广兵 ^1, ,
王金淑 ^1, ,
吴俊书 ^1,

1.
1 北京工业大学新型功能材料教育部重点实验室, 北京 100124;
2.
2 中国人民解放军总装备部工程设计研究总院, 北京 100028

通讯作者: 杜玉成 xrsu@sdau.edu.cn

基金项目:
博士后基金(No.76235) (No.76235)

泰安市科技发展计划项目(No.20113054)资助项目。 (No.20113054)

摘要: 以结晶氯化铝(AlCl₃·6H₂O)作为铝源,十二烷基苯磺酸钠(SDBS)为模板剂,采用水热法在硅藻土盘上制备了束状纳米结构γ-AlOOH/Al₂O₃复合吸附剂。采用XRD、SEM、TEM、TG/DSC、N₂吸脱附等对样品进行了表征。研究了样品对¹³³Cs⁺及Pb²⁺的吸附能力。研究表明,样品γ-AlOOH/硅藻土、γ-Al₂O₃/硅藻土对Cs⁺及Pb²⁺均具有良好的吸附性能,两者对Cs⁺的去除率分别为98.9%和99.6%;对Pb²⁺的最大吸附量分别为357.1、416.7mg·g^-1。两种样品对Pb²⁺的吸附均符合Langmuir吸附模型。

关键词:

束状纳米结构;复合吸附剂;硅藻土;吸附;吸附模型

English

Fabrication and Highly Efficient Adsorption for Cs⁺ and Pb²⁺ of γ-AlOOH/Al₂O₃ Modified Diatomite

1.
1 Key Lab of Advanced Functional Materials, Ministry of Education, Beijing University of Technology, Beijing 100124, China;
2.
2 Chinese People's Liberation Army General Armament Department, Engineering Research Institute, Beijing 100028, China

Corresponding author: 杜玉成 xrsu@sdau.edu.cn

Received Date: 18 November 2014
Fund Project:
博士后基金(No.76235)

泰安市科技发展计划项目(No.20113054)资助项目。

Abstract: The composite adsorption materials modified by wispy nanostructure γ-AlOOH or γ-Al₂O₃ were prepared via one-step hydrothermal method by using crystalline aluminum chloride (AlCl₃·6H₂O) as the resource of aluminum, sodium dodecylbenzenesulfonate (SDBS) as template and diatomite as the substrate. The as-prepared samples were characterized by X-ray diffraction (XRD), scanning electron microscope (SEM), transmission electron microscope (TEM), thermogravimetric analysis/differential scanning calorimetry (TG/DSC), and N₂ adsorption-desorption measurement. The adsorption capacity for Cs⁺ and Pb²⁺ of the samples were investigated. It was found that the samples showed superb adsorption properties for Cs⁺ and Pb²⁺. The maximal removal efficiency of the γ-AlOOH/diatomite and γ-Al₂O₃/diatomite for Cs⁺ were 98.9 and 99.6%, respectively, and the maximum adsorption capacities for Pb²⁺ were 357.1 and 416.7 mg·g^-1, respectively. Both of the adsorption models for Pb²⁺ were consistent with the Langmuir adsorption model.

Key words:

wispy nanostructure;composite adsorption materials;diatomite;adsorption;adsorption model

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1.
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γ-AlOOH/Al₂O₃修饰硅藻土的制备与Cs⁺、Pb²⁺吸附性能

通讯作者: 杜玉成 xrsu@sdau.edu.cn

English

Fabrication and Highly Efficient Adsorption for Cs⁺ and Pb²⁺ of γ-AlOOH/Al₂O₃ Modified Diatomite

Corresponding author: 杜玉成 xrsu@sdau.edu.cn

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