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TiO2/Fe2O3 composite hollow microsphere and preparation method thereof

A technology of tio2-fe2o3 and hollow microspheres, which is applied in the preparation of microspheres and microcapsule preparations, can solve the problems of poor electrical conductivity and limitations, and achieve the effects of low cost, good gas-sensing performance, and good photocatalytic degradation ability

Inactive Publication Date: 2012-12-19
无锡润鹏复合新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] But since pure Fe 2 o 3 Nanomaterials have poor electrical conductivity, which limits their practical applications.

Method used

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  • TiO2/Fe2O3 composite hollow microsphere and preparation method thereof
  • TiO2/Fe2O3 composite hollow microsphere and preparation method thereof
  • TiO2/Fe2O3 composite hollow microsphere and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0032] Dissolve glucose in deionized water to form a 0.15 g / mL solution. The solution was transferred into a stainless steel reaction kettle lined with polytetrafluoroethylene, and hydrothermal reaction was carried out at 160°C for 6 hours. After the reaction, it was centrifuged and dried to obtain a carbon sphere template with a size of 100-1000nm.

[0033] Add a certain quality of ferric chloride into the mixed solution of absolute ethanol and deionized water (volume ratio: 6:1), add urea (the concentration of urea is 0.5mol / L) after it is completely dissolved, and wait until the solution is clarified Finally, add tetrabutyl titanate under stirring, and add the prepared carbon spheres after the solution is mixed evenly. The molar ratio of iron and titanium in the solution is about 2:1. Ultrasonic the solution for 10 minutes in an ultrasonic cleaner, and keep warm at 60°C for 2 sky. Centrifuge, dry, and bake at 450°C for 2 hours to obtain TiO 2 -Fe 2 o 3 Composite microsp...

Embodiment 2

[0035] Dissolve glucose in deionized water to form a 0.17 g / ml solution. The solution was transferred into a stainless steel reaction kettle lined with polytetrafluoroethylene, and hydrothermal reaction was carried out at 180°C for 4 hours. After the reaction, it was centrifuged and dried to obtain a carbon sphere template with a size of 100-1000nm.

[0036] Add a certain quality of ferric chloride into the mixed solution of absolute ethanol and deionized water (volume ratio: 6:2), add urea (the concentration of urea is 0.8mol / L) after it is completely dissolved, and wait for the solution to be clarified Finally, add tetrabutyl titanate under stirring, and add the prepared carbon spheres after the solution is mixed evenly. The molar ratio of iron and titanium in the solution is about 2:2. Ultrasonic the solution for 10 minutes in an ultrasonic cleaner, and keep warm at 70°C for 2 sky. Centrifuge, dry, and bake at 500°C for 1 hour to obtain clathrate TiO 2 -Fe 2 o 3 Composi...

Embodiment 3

[0038] Dissolve glucose in deionized water to form a 0.30 g / mL solution. The solution was transferred into a stainless steel reaction kettle lined with polytetrafluoroethylene, and hydrothermal reaction was carried out at 170°C for 8 hours. After the reaction, it was centrifuged and dried to obtain a carbon sphere template with a size of 100-1000nm.

[0039] Add a certain quality of ferric chloride into the mixed solution of absolute ethanol and deionized water (volume ratio 6:3), and add urea after it is completely dissolved (the concentration of urea is 1mol / L), and the solution is clarified , add tetrabutyl titanate under stirring, mix the solution evenly and add the prepared carbon spheres, the molar ratio of iron and titanium in the solution is about 2:3, sonicate the solution in an ultrasonic cleaner for 10 minutes, and keep it warm at 80°C for 2 days . Centrifuge, dry, and bake at 470°C for 4 hours to obtain clathrate TiO 2 -Fe 2 o 3 Composite hollow microspheres, t...

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Abstract

The invention discloses a preparation method of cage-shaped TiO2-Fe2O3 composite hollow microspheres. The TiO2-Fe2O3 composite hollow microspheres having special morphologies and different dimensions are prepared through adopting carbon spheres prepared from glucose as templates, and adding ferric chloride and tetrabutyl titanate having different proportions at a low temperature. The preparation method has the advantages of simplicity, low reaction temperature, and environmental protection and no pollution in the synthetic process; and the synthesized hollow spheres are a novel gas and light sensitive material.

Description

technical field [0001] The invention relates to the field of inorganic semiconductor micro-nano hollow materials. Especially when it comes to carbon spheres as templates, cage-shaped hollow spheres of TiO 2 -Fe 2 o 3 Composite materials and methods for their preparation. Background technique [0002] Hollow sphere micro-nano structure materials have unique properties such as low density and high specific surface area, and have potential application value in many fields such as catalysis, low-density structure material drug carrier, chemical sensor and electrode material. The preparation and performance research of this kind of materials is a hot field of nanomaterials research at present. [0003] Among many hollow sphere micro-nano structure materials, Fe 2 o 3 Due to its surface effect and volume effect, hollow microspheres have excellent performance in many fields such as catalysis, pharmaceutical carrier, lithium ion battery and water treatment, and their synthesis...

Claims

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Application Information

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IPC IPC(8): B01J13/02
Inventor 李长生唐华李文静范有志钱周
Owner 无锡润鹏复合新材料有限公司
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