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Phosphate adsorption on aluminum-coordinated functionalized macroporous–mesoporous silica: Surface structure and adsorption behavior

Huang, W., Li, D., Zhu, Y., Xu, K., Li, J., Han, B. and Zhang, Y. (2013) Phosphate adsorption on aluminum-coordinated functionalized macroporous–mesoporous silica: Surface structure and adsorption behavior. Materials Research Bulletin, 48 (12). pp. 4974-4978.

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Link to Published Version: http://dx.doi.org/10.1016/j.materresbull.2013.04.0...
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Abstract

In this study, Al(III)-coordinated diamino-functionalized macroporous-mesoporous silica was synthesized and characterized by X-ray diffraction, N2 adsorption-desorption, Fourier transform infrared spectroscopy, scanning and transmission electron microscopy. Because of well-defined and interconnecting macroporous-mesoporous networks, the resulting adsorbent (MM-SBA) exhibited a significantly better phosphate adsorption performance and faster removal rate, as compared with the mesoporous adsorbent (M-SBA). Based on the Freundlich and Langmuir models, the phosphate adsorption capacity and the maximum adsorption capacity of MM-SBA were 7.99 mg P/g and 23.59 mg P/g, respectively. In the kinetic study of MM-SBA, over 95% of its final adsorption capacity reached in the first 1 min; whereas that of M-SBA was less than 79%.

Item Type: Journal Article
Murdoch Affiliation: School of Engineering and Information Technology
Publisher: Elsevier Limited
Copyright: © 2013 Elsevier Ltd.
URI: http://researchrepository.murdoch.edu.au/id/eprint/15728
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