TITANIUM DIOXIDE NANOBELT@MOF COMPOSITE MATERIAL, PREPARATION METHOD THEREFOR, AND USE THEREOF

摘要

The present invention provides a titanium dioxide nanobelt@MOF composite material, a preparation method therefor, and use thereof. The preparation method comprises the following steps: preparing a titanium dioxide nanobe carboxylation-treating the titanium dioxide nanobelt, so as to obtain a carboxyl-modified titanium dioxide nanobe and mixing the carboxyl-modified titanium dioxide nanobelt, a metal salt, and an organic ligand, and then performing a heating and crystallization treatment, so as to obtain a titanium dioxide nanobelt@MOF composite material. In said method, carboxyl functional modification is performed on the surface of the TiO₂ nanobelt and further an MOF material is grown in situ, allowing a simple process and low costs, achieving the preparation of a TiO₂ nanobelt@MOF composite material which has a shell layer having a controllable thickness and connected by means of covalent bonds, providing a good application prospect. The titanium dioxide nanobelt@MOF composite material provided in the present invention has a porous core-shell structure having a shell layer and an inner core, the core being a titanium dioxide nanobelt, and the shell layer being an MOF layer connected to the surface of the inner core by means of covalent bonds, improving the photocatalytic performance, providing high visible light response capability.