CN105521774A - Titanium dioxide hollow nano-material, and preparation method and application thereof - Google Patents

Titanium dioxide hollow nano-material, and preparation method and application thereof Download PDF

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CN105521774A
CN105521774A CN201510968708.0A CN201510968708A CN105521774A CN 105521774 A CN105521774 A CN 105521774A CN 201510968708 A CN201510968708 A CN 201510968708A CN 105521774 A CN105521774 A CN 105521774A
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titanium dioxide
preparation
dioxide hollow
hollow nano
nano material
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唐国钢
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Zhenjiang College
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Zhenjiang College
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J21/00Catalysts comprising the elements, oxides, or hydroxides of magnesium, boron, aluminium, carbon, silicon, titanium, zirconium, or hafnium
    • B01J21/06Silicon, titanium, zirconium or hafnium; Oxides or hydroxides thereof
    • B01J21/063Titanium; Oxides or hydroxides thereof
    • AHUMAN NECESSITIES
    • A62LIFE-SAVING; FIRE-FIGHTING
    • A62DCHEMICAL MEANS FOR EXTINGUISHING FIRES OR FOR COMBATING OR PROTECTING AGAINST HARMFUL CHEMICAL AGENTS; CHEMICAL MATERIALS FOR USE IN BREATHING APPARATUS
    • A62D3/00Processes for making harmful chemical substances harmless or less harmful, by effecting a chemical change in the substances
    • A62D3/10Processes for making harmful chemical substances harmless or less harmful, by effecting a chemical change in the substances by subjecting to electric or wave energy or particle or ionizing radiation
    • A62D3/17Processes for making harmful chemical substances harmless or less harmful, by effecting a chemical change in the substances by subjecting to electric or wave energy or particle or ionizing radiation to electromagnetic radiation, e.g. emitted by a laser
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J35/00Catalysts, in general, characterised by their form or physical properties
    • B01J35/20Catalysts, in general, characterised by their form or physical properties characterised by their non-solid state
    • B01J35/23Catalysts, in general, characterised by their form or physical properties characterised by their non-solid state in a colloidal state
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J35/00Catalysts, in general, characterised by their form or physical properties
    • B01J35/30Catalysts, in general, characterised by their form or physical properties characterised by their physical properties
    • B01J35/39Photocatalytic properties
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J35/00Catalysts, in general, characterised by their form or physical properties
    • B01J35/60Catalysts, in general, characterised by their form or physical properties characterised by their surface properties or porosity
    • B01J35/61Surface area
    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01GCOMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G23/00Compounds of titanium
    • C01G23/04Oxides; Hydroxides
    • C01G23/047Titanium dioxide
    • C01G23/053Producing by wet processes, e.g. hydrolysing titanium salts
    • AHUMAN NECESSITIES
    • A62LIFE-SAVING; FIRE-FIGHTING
    • A62DCHEMICAL MEANS FOR EXTINGUISHING FIRES OR FOR COMBATING OR PROTECTING AGAINST HARMFUL CHEMICAL AGENTS; CHEMICAL MATERIALS FOR USE IN BREATHING APPARATUS
    • A62D2101/00Harmful chemical substances made harmless, or less harmful, by effecting chemical change
    • A62D2101/20Organic substances
    • A62D2101/26Organic substances containing nitrogen or phosphorus
    • AHUMAN NECESSITIES
    • A62LIFE-SAVING; FIRE-FIGHTING
    • A62DCHEMICAL MEANS FOR EXTINGUISHING FIRES OR FOR COMBATING OR PROTECTING AGAINST HARMFUL CHEMICAL AGENTS; CHEMICAL MATERIALS FOR USE IN BREATHING APPARATUS
    • A62D2101/00Harmful chemical substances made harmless, or less harmful, by effecting chemical change
    • A62D2101/20Organic substances
    • A62D2101/28Organic substances containing oxygen, sulfur, selenium or tellurium, i.e. chalcogen

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Abstract

The invention discloses a titanium dioxide hollow nano-material, and a preparation method and an application thereof; the diameter of a hollow structure of the material is 1 to 2 [mu]m, and the material is orderly formed by particles with the diameter of 20 to 50 nm. The preparation method comprises the following steps: under stirring and ultrasonic conditions, dispersing tetrabutyl titanate to a mixed solution of an organic acid and hydrogen peroxide, then moving the mixed solution into a stainless steel reaction kettle, sealing, and carrying out a heating reaction; and after the reaction is finished, cooling to room temperature, carrying out centrifugal separation, repeatedly washing the product with deionized water, then repeatedly washing with anhydrous ethanol, drying, and annealing to obtain the product. The prepared material has the advantages of high photocatalytic efficiency, low cost, simple process and high yield.

Description

A kind of titanium dioxide hollow nano material, its preparation method and application thereof
Technical field
The present invention relates to field of nanometer material technology, be specifically related to a kind of titanium dioxide hollow nano material, its preparation method and application thereof.
Background technology
Titanium dioxide, the representative of semiconductor light-catalyst, especially unique stuctures and properties is widely used in the degraded of Organic substance in water, is one of important method solving the current environmental problem be on the rise.But titanium dioxide only has Anatase to have good absorption at ultraviolet region, visible region absorption efficiency and solar energy utilization ratio lower, therefore, the modification of titanium dioxide is become to one of focus studied now.
Application number is the preparation method that the Chinese patent of CN200910229406.6 discloses a kind of mesoporous titanium dioxide microspheres, take polyvinylpyrrolidone as template and carbon source, certain density aqueous povidone solution and titanium sulfate aqueous solution is mixed.Application number is the preparation method that the Chinese patent of CN201310589979.6 discloses a kind of mesoporous titanium dioxide microspheres, and the titanium dioxide of this meso-hole structure effectively can improve photo-catalysis capability, strengthens the utilization rate of solar energy.As everyone knows, the titanium dioxide of high-specific surface area has more excellent photocatalysis performance, and the photocatalysis performance of the titanium dioxide of mesoporous microsphere structure needs to be improved further.
Summary of the invention
For the deficiencies in the prior art, the object of the present invention is to provide a kind of preparation method of titanium dioxide hollow nano material, obtained material has the high advantage of photocatalysis efficiency, simultaneously with low cost, technique is simple, productive rate is high.
Above-mentioned purpose is achieved by the following technical solution:
A kind of titanium dioxide hollow nano material, the hollow structure diameter of this material is 1 ~ 2m, by orderly the forming of the particle of diameter 20 ~ 50nm.
A preparation method for titanium dioxide hollow nano material, comprises the steps:, under stirring and hyperacoustic condition, butyl titanate to be dispersed to organic acid and hydrogen peroxide (H 2o 2) mixed solution in, then move into stainless steel cauldron, sealing, adds thermal response, be cooled to room temperature, centrifugation after reaction terminates, by deionized water wash products repeatedly, more repeatedly clean with absolute ethyl alcohol, drying, annealing, obtains white powder, is described titanium dioxide hollow nano material.
Preferably, the concentration of above-mentioned butyl titanate in mixed solution is 0.05-0.2mol/L.
Preferably, the concentration of above-mentioned butyl titanate in mixed solution is 0.1mol/L.
Preferably, above-mentioned organic acid is the one in formic acid, acetic acid, propionic acid, butyric acid.
Preferably, above-mentioned organic acid is 5:1-50:1 with the ratio of the volume of hydrogen peroxide.
Preferably, above-mentioned organic acid is 20:1 with the ratio of the volume of hydrogen peroxide.
Preferably, above-mentioned heating reaction temperature is 100-220 DEG C, and the reaction time is 18-24h.
Preferably, above-mentioned annealing is carried out in tube furnace, and temperature is 400 DEG C-600 DEG C.
Titanium dioxide hollow nanometer material structure, as the application of photochemical catalyst, improves the specific area of material, makes it have better photocatalysis performance.
Cost of the present invention is inexpensive, and reagent is commercial product, does not need to prepare again, and production technology is simple and easy to control, and productive rate is high, reaches 90-95%, is applicable to large-scale industrial production.
Accompanying drawing explanation
Fig. 1 is the XRD spectra of the titanium dioxide hollow nanometer material structure that embodiment 1 obtains, consistent with the literature value of pure anatase phase titanium dioxide collection of illustrative plates (JCPDSCardNumber21-1272).
Fig. 2 is the SEM figure of the titanium dioxide hollow nanometer material structure that embodiment 1 obtains, can find out that titanium dioxide hollow nanostructure diameter is 1 ~ 2 μm by Fig. 2 a, Fig. 2 b shows that titanium dioxide hollow nanostructured is by orderly the forming of the particle of diameter 20 ~ 50nm.
Fig. 3 is the photocatalysis performance lab diagram (taking rhodamine B as degradation of dye) of the titanium dioxide hollow nanometer material structure that the embodiment of the present invention 1 obtains.
Detailed description of the invention
The present invention is further described below by way of detailed description of the invention, as known by the technical knowledge, the present invention also describes by other the scheme not departing from the technology of the present invention feature, and the change therefore within the scope of the present invention all or equivalent scope of the invention is all included in the invention.
Embodiment 1:
5mmol butyl titanate is dissolved in the mixed solution of 50mL acetic acid and hydrogen peroxide, the volume ratio of acetic acid and hydrogen peroxide is 20:1, stir and hyperacoustic 30min after, solution is moved into stainless steel cauldron, sealing, is placed in vacuum drying chamber in 120 DEG C of insulation 24h, is cooled to room temperature; Product, after centrifugation, uses deionized water and absolute ethyl alcohol cyclic washing respectively, under vacuum 60 DEG C of dry 10h, and the 2h that finally anneals in tube furnace under 500 DEG C of conditions obtains white powder, and productive rate is 95%.
Can find out that from Fig. 2 a titanium dioxide hollow nanostructure diameter is 1 ~ 2 μm, in Fig. 2 b, can find out that titanium dioxide hollow nanostructured is by orderly the forming of the particle of diameter 20 ~ 50nm.
As can be seen from Figure 3, during light-catalyzed reaction 50min, rhodamine B degradation rate is 98%, almost degradable.
Embodiment 2:
10mmol butyl titanate is dissolved in the mixed solution of 50mL acetic acid and hydrogen peroxide, the volume ratio of acetic acid and hydrogen peroxide is 50:1, stir and hyperacoustic 30min after, solution is moved into stainless steel cauldron, sealing, is placed in vacuum drying chamber in 200 DEG C of insulation 24h, is cooled to room temperature; Product, after centrifugation, uses deionized water and absolute ethyl alcohol cyclic washing respectively, under vacuum 80 DEG C of dry 10h, and the 2h that finally anneals in tube furnace under 500 DEG C of conditions obtains white powder, and productive rate is 92%.Gained titanium dioxide hollow nanostructure diameter is 1 ~ 2 μm, by orderly the forming of the particle of diameter 20 ~ 50nm.
During light-catalyzed reaction 50min, rhodamine B degradation rate is 97%, almost degradable.
Embodiment 3:
2.5mmol butyl titanate is dissolved in the mixed solution of 50mL propionic acid and hydrogen peroxide, propionic acid with go the volume ratio of hydrogen peroxide to be 5:1, stir and hyperacoustic 30min after, solution is moved into stainless steel cauldron, sealing, is placed in vacuum drying chamber in 160 DEG C of insulation 18h, is cooled to room temperature; Product, after centrifugation, uses deionized water and absolute ethyl alcohol cyclic washing respectively, under vacuum 60 DEG C of dry 10h, and the 2h that finally anneals in tube furnace under 600 DEG C of conditions obtains white powder, and productive rate is 90%.Gained titanium dioxide hollow nanostructure diameter is 1 ~ 2 μm, by orderly the forming of the particle of diameter 20 ~ 50nm.
During light-catalyzed reaction 50min, rhodamine B degradation rate is 97%, almost degradable.
Embodiment 4:
5mmol butyl titanate is dissolved in the mixed solution of 50mL butyric acid and hydrogen peroxide, the volume ratio of acetic acid and hydrogen peroxide is 20:1, stir and hyperacoustic 30min after, solution is moved into stainless steel cauldron, sealing, is placed in vacuum drying chamber in 120 DEG C of insulation 20h, is cooled to room temperature; Product, after centrifugation, uses deionized water and absolute ethyl alcohol cyclic washing respectively, under vacuum 60 DEG C of dry 10h, and the 2h that finally anneals in tube furnace under 500 DEG C of conditions obtains white powder, and productive rate is 90.5%.Gained titanium dioxide hollow nanostructure diameter is 1 ~ 2 μm, by orderly the forming of the particle of diameter 20 ~ 50nm.
During light-catalyzed reaction 50min, rhodamine B degradation rate is 97%, almost degradable.

Claims (10)

1. a titanium dioxide hollow nano material, is characterized in that, the hollow structure diameter of this material is 1 ~ 2m, by orderly the forming of the particle of diameter 20 ~ 50nm.
2. the preparation method of titanium dioxide hollow nano material as claimed in claim 1, it is characterized in that, comprise the steps: under stirring and hyperacoustic condition, butyl titanate is dispersed in the mixed solution of organic acid and hydrogen peroxide, move into stainless steel cauldron again, sealing, add thermal response, after reaction terminates, be cooled to room temperature, centrifugation, by deionized water wash products repeatedly, repeatedly clean with absolute ethyl alcohol again, dry, annealing, obtain white powder, be described titanium dioxide hollow nano material.
3. the preparation method of titanium dioxide hollow nano material as claimed in claim 2, is characterized in that: the concentration of described butyl titanate in mixed solution is 0.05-0.2mol/L.
4. the preparation method of titanium dioxide hollow nano material as claimed in claim 2, is characterized in that: the concentration of described butyl titanate in mixed solution is 0.1mol/L.
5. the preparation method of titanium dioxide hollow nano material as claimed in claim 2, is characterized in that: described organic acid is the one in formic acid, acetic acid, propionic acid, butyric acid.
6. the preparation method of titanium dioxide hollow nano material as claimed in claim 2, is characterized in that: described organic acid is 5:1-50:1 with the ratio of the volume of hydrogen peroxide.
7. the preparation method of titanium dioxide hollow nano material as claimed in claim 2, is characterized in that: described organic acid is 20:1 with the ratio of the volume of hydrogen peroxide.
8. the preparation method of titanium dioxide hollow nano material as claimed in claim 2, it is characterized in that: described heating reaction temperature is 100-220 DEG C, the reaction time is 18-24h.
9. the preparation method of titanium dioxide hollow nano material as claimed in claim 2, it is characterized in that: described annealing is carried out in tube furnace, temperature is 400 DEG C-600 DEG C.
10. as claimed in claim 1 titanium dioxide hollow nano material as the application of photochemical catalyst.
CN201510968708.0A 2015-12-22 2015-12-22 Titanium dioxide hollow nano-material, and preparation method and application thereof Pending CN105521774A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113769725A (en) * 2021-11-18 2021-12-10 长春工业大学 Magnetic separation organic acid modified titanium dioxide photocatalyst and preparation method thereof

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101444723A (en) * 2008-08-04 2009-06-03 华东师范大学 Method for preparing TiO2 hollow micro-sphere material
JP2009298614A (en) * 2008-06-11 2009-12-24 Jgc Catalysts & Chemicals Ltd Titanium oxide-based particles and its producing method
CN103626226A (en) * 2013-11-07 2014-03-12 江苏大学 Method for preparing hollow nano titanium dioxide without template
CN103623799A (en) * 2013-11-21 2014-03-12 镇江市高等专科学校 Preparation method of titanium dioxide mesoporous microspheres

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009298614A (en) * 2008-06-11 2009-12-24 Jgc Catalysts & Chemicals Ltd Titanium oxide-based particles and its producing method
CN101444723A (en) * 2008-08-04 2009-06-03 华东师范大学 Method for preparing TiO2 hollow micro-sphere material
CN103626226A (en) * 2013-11-07 2014-03-12 江苏大学 Method for preparing hollow nano titanium dioxide without template
CN103623799A (en) * 2013-11-21 2014-03-12 镇江市高等专科学校 Preparation method of titanium dioxide mesoporous microspheres

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Title
SHUQIN SHANG ET AL.: ""Template-Free Fabrication of TiO2 Hollow Spheres and Their Photocatalytic Properties"", 《APPLIED MATERIALS & INTERFACES》 *
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113769725A (en) * 2021-11-18 2021-12-10 长春工业大学 Magnetic separation organic acid modified titanium dioxide photocatalyst and preparation method thereof

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