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A kind of titanium dioxide porous tube and its preparation method
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A technology of titanium dioxide and porous tubes, which is applied in the field of photocatalytic materials, can solve the problems of short plates of titanium dioxide porous tube materials, and achieve the effects of strong adsorption performance, good experimental repeatability, and simple process flow
Inactive Publication Date: 2020-01-24
ANHUI UNIVERSITY
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[0005] In view of this, the embodiment of the present invention provides a titanium dioxide porous tube and its preparation method, the main purpose of which is to solve the problem of shortcomings in the preparation of titanium dioxide porous tube materials by traditional methods
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Embodiment 1
[0033] (1) Add 90 mL of ethylene glycol (EG) into the quartz cup as a solvent, measure 4 mL of isopropyltitanate with a pipette, slowly drop it into the quartz cup, and magnetically stir for 5 minutes to obtain a reaction solution;
[0034] (2) Inject 200mL of absolute ethanol into a 1000mL Hastelloy reaction kettle, then put the quartz cup into the kettle, and heat to 290°C for 5 hours to obtain the initial product;
[0035] (3) After the reaction is finished, the kettle body is naturally cooled to room temperature, then the sample is taken out, washed several times with alcohol and deionized water, and then dried;
[0038] (1) Add 90 mL of glycerol as a solvent into a quartz cup, measure 4 mL of isopropyltitanate with a pipette, slowly drop it into the quartz cup, and magnetically stir for 5 minutes to obtain a reaction solution;
[0039] (2) Inject 200mL of isopropanol into a 1000mL Hastelloy reactor, then put the quartz cup into the kettle, and heat to 295°C for 4.5h to obtain the initial product;
[0040] (3) After the reaction is finished, the kettle body is naturally cooled to room temperature, then the sample is taken out, washed several times with alcohol and deionized water, and then dried;
[0041] (4) Put the obtained powder into a tube furnace, N 2 Annealed at 610°C for 3.5h under atmosphere to obtain black TiO 2 powder.
Embodiment 3
[0043] (1) Add 90 mL of ethylene glycol (EG) into the quartz cup as a solvent, measure 4 mL of isopropyltitanate with a pipette, slowly drop it into the quartz cup, and magnetically stir for 5 minutes to obtain a reaction solution;
[0044] (2) Inject 200mL of absolute ethanol into a 1000mL Hastelloy reaction kettle, then put the quartz cup into the kettle, and heat to 290°C for 5 hours to obtain the initial product;
[0045] (3) After the reaction is finished, the kettle body is naturally cooled to room temperature, then the sample is taken out, washed several times with alcohol and deionized water, and then dried;
[0046] (5) Put the obtained powder into a tube furnace and anneal at 595°C for 4.5h in an air atmosphere to obtain white TiO 2 powder.
[0047] The present invention slowly generates water through the etherification reaction of alcohols to supply water for the hydrolysis of isopropyl titanate. The self-assembled hollow spheres of hydrogen titanyl oxide prepared...
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Abstract
The invention discloses a TiO2 (titanium dioxide) porous tube and a preparation method thereof, and relates to the technical field of photocatalysts. The preparation method comprises the following steps of mixing titanium isopropoxide and an organic solvent in a container, so as to obtain a mixed solution; putting the container into a hydrothermal reaction kettle loaded with anhydrous ethyl alcohol, and reacting for 4 to 6h at constant temperature of 290 to 300 DEG C, so as to obtain an initial product; annealing the initial product for 4 to 5h at the temperature of 580 to 620 DEG C under theair or inertatmosphere, so as to obtain titanium dioxide porous tube powder. The preparation method has the advantages that the prepared TiO2 is in a nanosheet shape with length of about 200nm, the nanoparticles are assembled by self to form the nanotube shape, the specific surface area of the particle is large, and the adsorbing property is strong; the technology process is simple, and the experiment repetitiveness is good; the obtained nanoparticle has good application prospect in the field of photocatalysis.
Description
technical field [0001] The invention relates to the technical field of photocatalytic materials, in particular to a titanium dioxide porous tube and a preparation method thereof. Background technique [0002] TiO 2 Due to its unique geometric structure, large specific surface area, and strong ability to receive light radiation; the fluffy three-dimensional structure is conducive to the exchange of Li ions (Na ions), and plays an important role in the field of photocatalysis or lithium batteries. Research hotspot of many scholars. Traditional synthetic TiO 2 Tube methods mainly include the following five categories: anodized Ti foil, alkaline hydrothermal treatment of TiO 2 Nanoparticles, electrospinning, alumina templating, and solvothermal methods. [0003] However, the electrochemical oxidation method can only prepare TiO 2 Tube arrays, and usually prepared as thin film materials, it is difficult to prepare a single dispersed TiO 2 Tube. TiO prepared by hydrothermal...
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