Preparation method of titanium dioxide biomorphic material with high catalytic activity

Abstract

The invention relates to a preparation method of a titanium dioxide biomorphic material with high catalytic activity. The method comprises the following steps: preparing a diluted hydrochloric acid solution, adding a biomass raw material, carrying out suction filtration, repeatedly conducting cleaning with deionized water until a pH value is 7, and carrying out drying at 50-60 DEG C; dissolving tetrabutyl titanate into absolute ethyl alcohol, and adding acetylacetone; conducting stirring in a magnetic stirrer to obtain a mixed solution which is marked as a solution A; dissolving triethylamineinto absolute ethyl alcohol and marking the formed solution as a solution B; pouring the solution B into the solution A until the pH value of the mixed solution is adjusted to 7.5+/-0.5, and soaking abiomass raw material into a prepared alcoholic solution of TiO2; and carrying out drying and sintering, putting the biomass raw material impregnated with the TiO2 alcoholic solution into a muffle furnace, and carrying out sintering in the air to obtain the TiO2 biomorphic material. The method has the advantages of rich template materials, economy, environmental protection, simple process, diversetemplate compositions and structures and the like, and has important research significance.

Description

technical field [0001] The present invention relates to a kind of titanium dioxide (TiO2) with high catalytic activity 2 ) preparation method of the remains material. It belongs to the technical field of material preparation. Background technique [0002] In recent years, with the rapid development of my country's economy, water pollution problems such as industrial wastewater and chemical raw materials have become more prominent, so water treatment technology has attracted more and more attention. Water treatment methods mainly include membrane separation, sedimentation and chemical oxidation, etc. [1] , but these methods have certain difficulties in dealing with refractory organic pollutants, and it is difficult to achieve satisfactory results. Photocatalyst degradation technology uses sunlight to make the catalyst produce hydroxyl radicals with strong oxidation ability, so as to oxidize organic pollutants in water into non-toxic products. It has the advantages of high ...

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Problems solved by technology

Although the preparation of TiO 2 There are many processes for materials, such as the sol-gel method mentioned above, hydrothermal method, chemical vapor deposition method, etc., but the TiO prepared by these methods 2 The shape of the material is relatively simple, and there are certain shortcomings

For example, sol-gel uses titanium alkoxide as raw material and adds a large amount of organic reagents, so the cost is high. At the same time, due to the formation of gel, the organic reagents are not easy to escape, and the drying and sintering process is prone to carbon pollution. [6] The hydrothermal method refers to the use of fluids such as aqueous solution or steam as the reaction medium in a special closed reaction vessel (autoclave), and by heating the reaction vessel to create a high-temperature, high-pressure reaction environment, so that usually insoluble or insoluble substances Dissolving and recrystallization, but the hydrothermal process requires high equipment, technical difficulty, and poor safety performance; the film obtained by chemical vapor deposition is of good quality, but the coating equipment of this method is relatively complicated, and the temperature of the substrate needs to be strictly controlled, because TiO 2 Film morphology changes with substrate temperature [7] , so it is urgent to study the preparation of TiO with various morphologies 2 the simple and easy method of

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