![]() Users should refer to the original published version of the material for the full abstract. No warranty is given about the accuracy of the copy. However, users may print, download, or email articles for individual use. In this paper, a novel 3D hierarchical flower-like hollow SiO 2 TiO 2 sphere (FHST) with a large number of irregular nanosheets was successfully prepared by a solvothermal method and subsequent calcination process, in which multiple different functional components were perfectly integrated into a single nanostructure. Copyright of Microchimica Acta is the property of Springer Nature and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission.A series of basic and acidic analytes were also separated on the column. 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 spheres under alkaline was tested by flushing of a mobile phase at pH 13 for 7 days. spheres functionalized with C18 were packed into a stainless steel column. The crystal phase of TiO2 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 TiO2 nanoclusters are modified into the pores and the structure of the original SiO2 core-shell sphere is hardly affected. Stber's method is used to prepare the silica core first, which is then coated with a titania shell via the hydrolysis of tetrabutyl orthotitanate (TBOT). The results of the DFT calculations demonstrate that the TiO2 nanoclusters are always first formed in bulk solution and then enter the pores. The pore size distribution of SiO2 core-shell spheres modified with TiO2 was analyzed by Barrett-Joyner-Halenda (BJH) method and density functional theory (DFT) method, respectively. Abstract: Based on a detailed study of the hydrolysis process of tetrabutyl orthotitanate (TBOT), TiO2 nanoclusters were modified inside the pores of SiO2 core-shell particles instead of the outside. ![]()
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