Issue 33, 2012
From the journal:

Journal of Materials Chemistry

Metal silicate nanotubes with nanostructured walls as superb adsorbents for uranyl ions and lead ions in water†

Jin Qu,ab   Wei Li,ab   Chang-Yan Cao,a   Xiao-Jie Yin,c   Liang Zhao,c   Jing Bai,c   Zhi Qinc  and  Wei-Guo Song*a  

* Corresponding authors

a Beijing National Laboratory for Molecular Sciences (BNLMS) & Key Laboratory for Molecular Nanostructures and Nanotechnology, Institute of Chemistry, Chinese Academy of Sciences, Beijing, P. R. China
E-mail: wsong@iccas.ac.cn
Fax: +86-10-62557908
Tel: +86-10-62557908

b Graduate University of Chinese Academy of Sciences, Beijing, P. R. China

c Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou, P. R. China
E-mail: qinzhi@impcas.ac.cn
Tel: +86-0931-4969693

Abstract

Silica nanotubes with mesoporous walls of 30 nm thickness were used as morphology templates, as well as the silicon source, to produce various metal silicate nanotubes with nanostructured walls, including magnesium silicate, copper silicate, nickel silicate, cobalt silicate and manganese silicate. These silicate materials retained the tubular structure of the templates, which resulted in large surface areas as high as 649 m2 g−1, large total volumes as high as 1.433 cm3 g−1 and facile mass transportation on their surfaces. These features enabled them to be superb adsorbents for adsorption in water; in particular, magnesium silicates showed maximum adsorption capabilities of 929 mg g−1 for uranyl ions and 424 mg g−1 for lead ions, respectively. In practical usage, magnesium silicates could effectively adsorb uranium directly from the salt lake water, with a practical adsorption capacity of 0.23 mg g−1, and was able to enrich the uranium concentration by 8 times.

Graphical abstract: Metal silicate nanotubes with nanostructured walls as superb adsorbents for uranyl ions and lead ions in water

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Article information

DOI
https://doi.org/10.1039/C2JM33178K
Article type
Paper
Submitted
18 May 2012
Accepted
20 Jun 2012
First published
25 Jun 2012

J. Mater. Chem., 2012,22, 17222-17226

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Metal silicate nanotubes with nanostructured walls as superb adsorbents for uranyl ions and lead ions in water

J. Qu, W. Li, C. Cao, X. Yin, L. Zhao, J. Bai, Z. Qin and W. Song, J. Mater. Chem., 2012, 22, 17222 DOI: 10.1039/C2JM33178K

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