Fabrication of Mesoporous Hollow TiO₂Microcapsules for Application as a DNA Separator

Abstract

This study evaluated a simple and useful route to the synthesis of mesoporous TiO 2 microcapsules with a hollow macro-core structure. A hydrophilic precursor sol containing the surfactants in the hydrophobic solvents was deposited on PMMA polymer surfaces modified by non-thermal plasma to produce mesoporous shells after calcination. The surface of the PMMA polymer spheres was coated with NH 4 F and CTAB to control the interfacial properties and promote the subsequent deposition of inorganic sols. These hollow type mesoporous TiO 2 microcapsules could be applied as an efficient substrate for the immobilization of DNA oligonucleotides.

Elucidation of mesopore-organic molecules interactions in mesoporous TiO2 photocatalysts to improve photocatalytic activity

“…Over the past two decades, the research of mesoporous TiO 2 was mainly focused on new synthesis methods and improved photocatalytic activities [21,22,[31][32][33][34][35][36][37][38]. Some researchers explored potential applications in solar cells (anode), CO 2 capture, DNA separation, dye adsorption, and catalysis for synthesis [32,[39][40][41][42][43][44][45][46]. However there have been little research on the interactions of mesopores and organic molecules, which would be important for the understanding of photocatalytic activity with mesopores [28].…”