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A novel synergistic solvent impregnated resin (SIR), containing both 1-phenyl-1,3-tetradecanedione (C11phβDK) and tri-n-octylphosphine oxide (TOPO), was used for the selective adsorption of Li+ in aqueous chloride media. The extractants have a synergistic effect on the ability of the SIR system to adsorb Li+ ion with high selectivity relative to Na+ and K+. The extent of adsorption of Li+ is increased with an increase in the amount of TOPO impregnated in the SIR. Li+ can be effectively separated from a solution containing a high concentration of Na+ by column chromatography using a column packed with SIR.

Colloidal mesoporous silica nanoparticles (CMS) are useful as carriers for imaging probes because of their unique features. A simple method for the pore clogging of CMS has been proved by the addition of tetraethoxysilane under weakly basic conditions. The pore clogging of CMS is useful for encapsulation of thermoresponsive dyes.

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