Anatase/brookite mesoporous titanium dioxide mixed crystal nanosheet as well as preparation method and application thereof

• Main Authors: ZHANG XINYI, PARK YOUNG-OK
• Format: Patent
• Language: Chinese; English
• Published: 07.11.2023
• Subjects: AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUSPOLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; APPARATUS THEREFOR; CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; CHEMISTRY; CRYSTAL GROWTH; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; METALLURGY; NANOTECHNOLOGY; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITHDEFINED STRUCTURE; REFINING BY ZONE-MELTING OF MATERIAL; SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITHDEFINED STRUCTURE; SINGLE-CRYSTAL-GROWTH; SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; THEIR RELEVANT APPARATUS; TRANSPORTING; UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL ORUNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL

The invention relates to a nano material, in particular to an anatase/brookite mesoporous titanium dioxide mixed crystal nanosheet as well as a preparation method and application thereof. The preparation method comprises the following steps: preparing a titanium dioxide seed crystal by taking a nano silicon dioxide stock solution as a hard template and titanium tetrachloride as a precursor, under an acidic condition, taking tetrabutyl titanate as a titanium source, adding hydrofluoric acid as an end-capping reagent, exposing a high-proportion anatase (101) crystal face, and after a hydrothermal reaction, removing the template to obtain the mesoporous anatase/brookite titanium dioxide mixed crystal. The mesoporous anatase/brookite titanium dioxide mixed crystal prepared by the method disclosed by the invention is a nanoscale flaky material and has an obvious mesoporous structure. The transmission distance of photon-generated carriers is reduced through nanocrystallization, recombination of the photon-generated