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Preparation method of zinc titanate and titanium dioxide composite nano material

A technology of composite nanomaterials and titanium dioxide, which is applied in the field of preparation of functional materials, can solve the problems of low solar energy utilization efficiency, and achieve the effects of easy operation and control, low preparation cost and high catalytic activity

Inactive Publication Date: 2016-07-20
BOHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But TiO 2 The bandgap width (3.2eV) is wide, and the utilization efficiency of solar energy is low. How to improve the photocatalytic efficiency and the photocatalyst that can effectively absorb visible light have become a research hotspot.

Method used

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  • Preparation method of zinc titanate and titanium dioxide composite nano material
  • Preparation method of zinc titanate and titanium dioxide composite nano material
  • Preparation method of zinc titanate and titanium dioxide composite nano material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Slowly add the isopropanol solution with a concentration of 0.1mol / L zinc acetylacetonate into the isopropanol solution with a concentration of 0.1mol / L titanium acetylacetonate, dissolve and mix evenly in the alcohol solution, and carry out the mixed solution obtained. For the crosslinking reaction, the reaction temperature was 300° C., and the reaction time was 6 hours, wherein the molar ratio of zinc acetylacetonate to titanium acetylacetonate was 1:2. After the cross-linking reaction finishes, continue to carry out high-temperature reaction in the muffle furnace, the high-temperature reaction temperature is at 800 ℃, and the reaction time is 10h. After natural cooling, the target product is obtained.

[0033] The particle size of the product is between 200-240nm, the band gap is 2.8eV, and the yield of the product is 99.5%. The product purity is 99.8%, impurity content: carbon is less than 0.2%. The prepared zinc titanate / titanium dioxide composite nanomaterial wa...

Embodiment 2

[0035] Slowly add the methanol solution with a concentration of 0.1mol / L zinc acetylacetonate into the methanol solution with a concentration of 0.1mol / L titanium acetylacetonate, dissolve and mix in the alcohol solution, and the obtained mixed solution undergoes cross-linking reaction. The temperature is 250° C., the reaction time is 8 hours, and the molar ratio of zinc acetylacetonate and titanium acetylacetonate is 1:2. After the cross-linking reaction is finished, continue to carry out high-temperature reaction in the muffle furnace, the high-temperature reaction temperature is at 1000 ° C, and the reaction time is 24h. After natural cooling, the target product is obtained.

[0036] The particle size of the product is between 210-250nm, the band gap is 2.75eV, and the yield of the product is 99.1%. The product purity is not less than 99.7%, and the impurity content: carbon is less than 0.3%. The prepared zinc titanate / titanium dioxide composite nanomaterial was used as a...

Embodiment 3

[0038]Slowly add the ethanol solution of zinc acetylacetonate with a concentration of 0.05mol / L to the ethanol solution of titanium acetylacetonate with a concentration of 0.05mol / L slowly, dissolve and mix well in the alcohol solution. The obtained mixed solution was subjected to cross-linking reaction, the reaction temperature was 400° C., and the reaction time was 2 hours, wherein the molar ratio of zinc acetylacetonate and titanium acetylacetonate was 1:2. After the cross-linking reaction is finished, continue to carry out high-temperature reaction in the muffle furnace, the high-temperature reaction temperature is at 1000 ° C, and the reaction time is 24h. After natural cooling, the target product is obtained.

[0039] The particle size of the product is between 240-280nm, the band gap is 2.72eV, and the yield of the product is 99.2%. The product purity is not less than 99.6%, and the impurity content: carbon is less than 0.4%. The prepared zinc titanate / titanium dioxid...

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Abstract

The invention belongs to the technical field of functional material preparation, and relates to a preparation method of zinc titanate and titanium dioxide composite nano material. The method comprises the steps that zinc acetylacetonate and titanium acetylacetonate are dissolved and mixed to be uniform in an alcoholic solution, a cross-linking reaction is conducted at certain temperature, the materials are subjected to heat treatment in a muffle furnace, and the zinc titanate and titanium dioxide composite nano material is obtained. According to the preparation method of the zinc titanate and titanium dioxide composite nano material, the technology is simple and convenient and easy to carry out, the purity is high, the impurity content is low, the product is low in preparation cost and excellent in property, and industrial batched production can be achieved. The prepared zinc titanate and titanium dioxide composite nano material is used as a photocatalytic material, has higher catalytic activity and has wide application prospects in the fields of dyestuff wastewater and indoor harmful gas degradation, photocatalytic disinfection and the like.

Description

technical field [0001] The invention belongs to the technical field of preparation of functional materials, and in particular relates to a preparation method of a zinc titanate / titanium dioxide composite nanomaterial. Background technique [0002] Photocatalytic reactions are chemical reactions that occur under the action of light. Semiconductor catalysis is excited by light to generate hole-electron pairs, and then the holes or electrons further trigger catalytic oxidation or reduction reactions. The activation energy of photochemical reactions comes from the energy of photons. In the utilization of solar energy, photoelectric conversion and photochemical conversion have always been very active research fields. In 1972, Fujishima et al. published on Nature the use of TiO 2 After the experimental results of semiconductor electrode photolysis of water to produce hydrogen and oxygen, the research on semiconductor photocatalysis quickly set off an upsurge (see HondaK, Fujishi...

Claims

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Application Information

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IPC IPC(8): B01J23/06B01J21/06
CPCB01J21/063B01J23/06B01J35/39
Inventor 许家胜丁亮张杰张霞王莉丽王琳孙誉东钟克利李阁唐爽艾慧婷车昕彤刘娇唐克邢锦娟张艳萍刘琳钱建华
Owner BOHAI UNIV
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