초록(영문)
Porous materials with various pore sizes have been studied in diverse fields such as adsorption of gases or small molecules, the
separation of different ingredients, and drug delivery systems. In this research, we tried to compare the adsorption properties of zeolite
with 0.1 nm size of pore and MSN(Mesoporous silica nanoparticle) with 2~4 nm pores. First, by using hexaaqua copper(II) ion and
Basic Orange 14 dye, we tested that the absorbance at a specific wavelength could be used to compare the adsorption capacity of porous
materials quantitatively. Based on this pre-experiment, the adsorption property of polyphenols to zeolite and two kinds of MSN was
studied. Tannic acid, which has a largest molecular weight among the three types of polyphenols, showed quite a difference in adsorption
depending on the pore size of the porous materials.
However, quercetin, which has a relatively small molecular weight, showed a little adsorption to the porous materials used. Comparing
the adsorption of hexaaqua copper(II) ion, Basic Orange 14, and quercetin, the functional group or the polarity within the molecules might
affect their adsorption to the porous materials. This research suggests the possibility of MSN in the separation of natural products suc as
polyphenols. In the further research, the effects of the molecular size and the functional groups within the molecule on the adsorption to
porous materials will be studied in detail.