Please use this identifier to cite or link to this item: https://doi.org/10.1016/j.micromeso.2006.11.030
Title: Incorporation of hybrid elements into microporous titanosilicate ETS-10: An approach to improving its adsorption properties toward Pb2+
Authors: Lv, L. 
Su, F. 
Zhao, X.S. 
Keywords: Adsorption
Heavy metal lead
Isomorphous substitution
Microporous titanosilicate ETS-10
Issue Date: 20-Apr-2007
Source: Lv, L., Su, F., Zhao, X.S. (2007-04-20). Incorporation of hybrid elements into microporous titanosilicate ETS-10: An approach to improving its adsorption properties toward Pb2+. Microporous and Mesoporous Materials 101 (3) : 355-362. ScholarBank@NUS Repository. https://doi.org/10.1016/j.micromeso.2006.11.030
Abstract: In this study, B-, Al-, and Ga-substituted microporous titanosilicate ETS-10 (designed as ETBS-10, ETAS-10, and ETGS-10, respectively) were synthesized under hydrothermal conditions. The adsorption kinetics and equilibria of Pb2+ ions on the ETS-10 (without substitution), ETBS-10, ETAS-10, and ETGS-10 samples were measured in a batch mode. Upon isomorphous substitution of B, Al and Ga for the Si(4Si) sites, the resulting solids exhibited more surface-negative charges as revealed by Zeta potential profile. The kinetic data showed a similar adsorption rate of Pb2+ on the four samples because of the same crystalline structure and the similar particle sizes of the four samples. However, the equilibrium results demonstrated that the maximum adsorption capacities of Pb2+ ions on samples ETBS-10, ETAS-10, and ETGS-10 were increased about 11%, 16.9%, and 12.5%, respectively, in comparison with ETS-10 because of the substitution of Si atoms by the trivalent elements. © 2006 Elsevier Inc. All rights reserved.
Source Title: Microporous and Mesoporous Materials
URI: http://scholarbank.nus.edu.sg/handle/10635/87528
ISSN: 13871811
DOI: 10.1016/j.micromeso.2006.11.030
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