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A kind of preparation method of yttrium manganate nano material

A nanomaterial, yttrium manganate technology, applied in the field of preparation of yttrium manganate nanomaterials, can solve the problems of low product purity, high production cost, high reaction temperature, etc., and achieve simple process route, easy operation control, and low impurity content Effect

Inactive Publication Date: 2018-05-22
BOHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The reaction temperature of the solid phase reaction method is high (1000 °C), the reaction is not easy to complete, and impurities often appear; the chemical co-precipitation method is prone to agglomeration during the thermal analysis process; the preparation process of the microemulsion method is complicated and the production cost is relatively high; sol- The reaction process of the gel method is not easy to control, the purity of the obtained product is relatively low, and the synthesis process is relatively complicated and time-consuming.

Method used

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  • A kind of preparation method of yttrium manganate nano material
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  • A kind of preparation method of yttrium manganate nano material

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Effect test

Embodiment 1

[0031] The molar ratio of yttrium acetylacetonate and manganese acetylacetonate was 1:1, accurately weighed and put into methanol (12C, 99.95%) to fully stir and dissolve. The molar concentration of acetylacetonate was 0.1 mol / L. The resulting mixed solution was subjected to solvothermal reaction, the solvothermal reaction temperature was 200 ° C, and the solvothermal reaction time was 12 hours. After the solvothermal reaction was completed, it was naturally cooled to room temperature, and the product obtained by the reaction was filtered and washed and placed in an oven at a programmed temperature increase rate of 5°C / min, and dried at 120°C for 5 hours. Then place it in a muffle furnace for calcination, the calcination time is 8 hours, the calcination temperature is 500 °C, and the heating rate is 10 °C / min. After natural cooling, the yttrium manganate nanometer material is obtained. The size of the nanoparticles is 20 nm, and the yield of the product is 99.9%. The purity ...

Embodiment 2

[0033] The molar ratio of yttrium acetylacetonate and manganese acetylacetonate is 1:1, accurately weighed and put into methanol (12C, 99.95%) to stir and dissolve. The molar concentration of yttrium acetylacetonate is 0.01 mol / L. The mixed solution obtained is carried out solvothermal reaction, and the solvothermal reaction temperature is 110 ℃, and the solvothermal reaction time is 48 hours. After the solvothermal reaction was completed, it was naturally cooled to room temperature, and the product obtained by the reaction was filtered and washed and placed in an oven at a programmed temperature increase rate of 5°C / min, and dried at 120°C for 2 hours. Then place it in a muffle furnace for calcination, the calcination time is 2 hours, the calcination temperature is 800 °C, and the heating rate is 10 °C / min. After natural cooling, the yttrium manganate nanometer material is obtained. The size of the nanoparticles is 30 nm, and the yield of the product is 99.8%. The purity of...

Embodiment 3

[0035] The molar ratio of yttrium acetylacetonate and manganese acetylacetonate was 1:1, accurately weighed and put into methanol (12C, 99.95%) to stir and dissolve. The molar concentration of yttrium acetylacetonate was 0.2 mol / L. The resulting mixed solution was subjected to solvothermal reaction, the solvothermal reaction temperature was 220 ° C, and the solvothermal reaction time was 6 hours. After the solvothermal reaction was completed, it was naturally cooled to room temperature, and the product obtained by the reaction was filtered and washed and placed in an oven at a programmed temperature increase rate of 5°C / min, and dried at 120°C for 5 hours. Then place it in a muffle furnace for calcination, the calcination time is 4 hours, the calcination temperature is 600 °C, and the heating rate is 10 °C / min. After natural cooling, the yttrium manganate nanometer material is obtained. The size of the nanoparticles is 25 nm, and the yield of the product is 99.8%. The purity...

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Abstract

The invention belongs to the field of preparation of inorganic non-metallic materials and relates to a method for preparing yttrium manganate nanomaterials, which involves fully dissolving yttrium acetylacetonate and manganese acetylacetonate in a methanol solution, performing a solvothermal reaction, filtering and washing, and then After drying, calcination and cooling, the yttrium manganate nanomaterial is obtained. The process of the invention is simple and easy, the product purity is high, and the preparation cost is low, and the size of the obtained yttrium manganate nanomaterial is 20 to 30 nm. Moreover, the product has good uniformity and dispersion, the production process is simple, the sintering temperature is low, and it is easy to be applied to actual large-scale production. The yttrium manganate nanomaterial prepared by the invention has high catalytic activity as a photocatalytic material, and has broad application prospects in the fields of degrading dye wastewater and indoor harmful gases, photocatalytic disinfection and other fields.

Description

technical field [0001] The invention belongs to the technical field of preparation of inorganic non-metallic materials, and in particular relates to a preparation method of yttrium manganate nanometer material. Background technique [0002] Yttrium manganate (YMnO 3 ) has a hexagonal crystal structure and is a representative material in the series of rare earth manganese oxide materials. Due to its ferroelectricity, rare earth manganese oxides with unique electrical, optical, magnetic and properties are currently one of the hotspots in the field of condensed matter physics. It has unique application prospects in ferroelectricity, ferromagnetism, and ferroelectric memory. In recent years, related research reports have shown a rapid growth trend, mainly about the preparation and characterization of ferroelectric materials and devices. At the same time, yttrium manganate is also a semiconductor photocatalytic material, which has photocatalytic activity and can effectively cat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G45/12B82Y30/00B01J23/34
CPCC01G45/1264B01J23/34C01P2004/03C01P2006/80C01P2004/64B01J35/40B01J35/39
Inventor 许家胜唐爽张杰孙誉东
Owner BOHAI UNIV
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