Ion Specific Surface Charge Density of SBA-15 Mesoporous Silica
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Salis, Andrea; Parsons, Drew; Bostrom, Mathias Anders; Medda, Luca; Barse, Brajesh; Ninham, Barry; Monduzzi, Maura
Description
Potentiometric titrations were used to estimate the surface charge density of SBA-15 mesoporous silica in different salt solutions. It was found that surface charge depends both on cation type, following a Hofmeister series (Cs+ <Guanidinium+<K+<Na +<Li+), and on salt concentration (in the range 0.05-1 M). The surface charge series is reproduced by theoretical calculations performed using a modified Poisson-Boltzmann equation that includes ionic dispersion forces with ab initio ion...[Show more]
Collections | ANU Research Publications |
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Date published: | 2010 |
Type: | Journal article |
URI: | http://hdl.handle.net/1885/56258 |
Source: | Langmuir |
DOI: | 10.1021/la902721a |
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01_Salis_Ion_Specific_Surface_Charge_2010.pdf | 1.09 MB | Adobe PDF | Request a copy |
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