![]() Yin JB, He L, Gao ZW, Gao LX, Wang B (2009) Facile method for fabricating titania spheres for chromatographic packing. ![]() Wang JW, Wang ZD, Sun NR, Deng CH (2019) Immobilization of titanium dioxide/ions on magnetic microspheres for enhanced recognition and extraction of mono- and multi-phosphopeptides. A series of basic and acidic analytes were also separated on the column.īeeram SR, Rodriguez E, Doddavenkatanna S, Li Z, Pekarek A, Peev D, Goerl K, Trovato G, Hofmann T, Hage DS (2017) Nanomaterials as stationary phases and supports in liquid chromatography. The efficiency of the column after the alkali solution treatment still reaches 98,430 plates m −1, which is only about 1.6% lower than that before the alkali solution treatment. The chemical stability of SiO dSiO 2 spheres under alkaline was tested by flushing of a mobile phase at pH 13 for 7 days. SiO dSiO 2 spheres functionalized with C18 were packed into a stainless steel column. The crystal phase of TiO 2 was measured by XRD. The morphology of the particles was characterized by scanning electron microscopy and transmission electron microscopy. By regulating the rate of hydrolysis of TBOT, almost all of the TiO 2 nanoclusters are modified into the pores and the structure of the original SiO 2 core-shell sphere is hardly affected. The results of the DFT calculations demonstrate that the TiO 2 nanoclusters are always first formed in bulk solution and then enter the pores. The pore size distribution of SiO 2 core-shell spheres modified with TiO 2 (SiO dSiO 2) was analyzed by Barrett-Joyner-Halenda (BJH) method and density functional theory (DFT) method, respectively. Based on a detailed study of the hydrolysis process of tetrabutyl orthotitanate (TBOT), TiO 2 nanoclusters were modified inside the pores of SiO 2 core-shell particles instead of the outside. ![]()
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