Fabrication of Fe-coordinated diamino-functionalized SBA-15 with hierarchical porosity for phosphate removal

W. Huang; D. Li; Y. Zhu; K. Xu; J. Li; B. Han; Y. Zhang

doi:10.1016/j.matlet.2013.03.017

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Fabrication of Fe-coordinated diamino-functionalized SBA-15 with hierarchical porosity for phosphate removal

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Fabrication of Fe-coordinated diamino-functionalized SBA-15 with hierarchical porosity for phosphate removal

W. Huang, D. Li, Y. Zhu, K. Xu, J. Li, B. Han and Y. Zhang

Materials Letters, Vol.99, pp.154-157

2013

DOI: https://doi.org/10.1016/j.matlet.2013.03.017

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Abstract

Hierarchically macroporous-mesoporous SBA-15 phosphate adsorbent was synthesized via a dual-templating approach, followed by diamino-functionalization and Fe(III) impregnation. The resulting Fe(III)-coordinated diamino-functionalized macroporous-mesoporous adsorbent possessed well-defined and interconnecting macroporous and mesoporous networks. Its maximum adsorption was 12.7 mg/g, which was 86.8% greater than that of Fe(III)-coordinated amino-functionalized mesoporous SBA-15. In the kinetic study of macroporous-mesoporous adsorbent, 92.5% of the final adsorption capacity reached in the first 1 min; and the adsorption followed the pseudo-second-order equation well, suggesting the presence of chemisorption. The pH ranging from 3.0 to 6.0 favored the high phosphate adsorption of hierarchically porous adsorbent; however, the coexistence of other anions, especially F-, retarded the adsorption.

Details

Title: Fabrication of Fe-coordinated diamino-functionalized SBA-15 with hierarchical porosity for phosphate removal
Authors/Creators: W. Huang (Author/Creator)
D. Li (Author/Creator)
Y. Zhu (Author/Creator)
K. Xu (Author/Creator)
J. Li (Author/Creator)
B. Han (Author/Creator)
Y. Zhang (Author/Creator)
Publication Details: Materials Letters, Vol.99, pp.154-157
Publisher: Elsevier B.V.
Identifiers: 991005545310907891
Copyright: © 2013 Elsevier B.V.
Murdoch Affiliation: School of Engineering and Information Technology
Language: English
Resource Type: Journal article

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Collaboration types: Domestic collaboration; International collaboration
Citation topics: 2 Chemistry; 2.90 Water Treatment; 2.90.27 Adsorption
Web Of Science research areas: Materials Science, Multidisciplinary; Physics, Applied
ESI research areas: Materials Science