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A method for preparing samarium ferrite nanopowder by microwave method

A technology of nano-powder and microwave method, which is applied in the field of preparation of ferrite nano-materials, achieving the effect of simple process and equipment

Active Publication Date: 2014-10-08
HUZHOU TA HSIANG GLASS PRODS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, the microwave method is used to directly prepare SmFeO 3 Nanopowder has not been reported yet

Method used

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  • A method for preparing samarium ferrite nanopowder by microwave method
  • A method for preparing samarium ferrite nanopowder by microwave method
  • A method for preparing samarium ferrite nanopowder by microwave method

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Experimental program
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Embodiment 1

[0017] At room temperature, 0.004mol Sm(NO 3 ) 3 Dissolved in 20ml of 95% ethanol to obtain Sm 3+ ethanol solution; 0.004mol Fe(NO 3 ) 3 Dissolved in 20ml of 95% ethanol to obtain Fe-containing 3+ ethanol solution. Under stirring conditions, dissolve 0.3g of polyvinyl alcohol in 60ml of distilled water at 55°C to obtain a solution, and 20ml of Sm 3+ A solution of ethanol was added to obtain a mixed solution. 20ml containing Fe 3+ Slowly add the ethanol solution of 0.0056mol of urea into the mixed solution. Keep the temperature of the mixed solution at 50° C., and continue to stir for 30 min to obtain a reaction solution. Put the reaction solution into a microwave oven, adjust the power of the microwave oven to 450W, react in microwave for 28 minutes until it is completely burned to obtain the product, and grind the product after cooling to obtain the product. Carry out X-ray diffraction analysis (XRD), scanning electron microscope (SEM) and diffuse reflectance absorpt...

Embodiment 2

[0023] At room temperature, 0.003mol Sm(NO 3 ) 3 Dissolved in 15ml of 95% ethanol to obtain Sm 3+ ethanol solution; 0.003mol Fe(NO 3 ) 3 Dissolved in 15ml of 95% ethanol to obtain Fe-containing 3+ ethanol solution. Under stirring conditions, dissolve 0.225g of polyvinyl alcohol in 45ml of 55°C distilled water to obtain a solution, and 15ml of Sm 3+ A solution of ethanol was added to obtain a mixed solution. 15ml containing Fe 3+ Slowly add the ethanol solution to the above mixed solution, and then add 0.0042mol of urea to the mixed solution. Keep the temperature of the mixed solution at 55° C., and continue to stir for 30 min to obtain a reaction solution. Put the reaction solution into a microwave oven, adjust the power of the microwave oven to 400W, react in microwave for 28 minutes until it is completely burned to obtain the product, and grind the product after cooling to obtain the product. According to the same photocatalytic experimental method as in Example 1, ...

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Abstract

A method for preparing samarium ferrate nano-powder by a microwave method relates to a preparation method of a samarium ferrate nano-material. The invention employs microwave technology, adopts ferric nitrate, samaric nitrate, polyvinyl alcohol and urea as raw materials, and prepares samarium ferrate nano-powder which has an average crystal thickness of 30 nm and a band gap of 1.94 eV, and has excellent visible light catalytic activity. The steps are divided into two steps of reaction solution preparation and nano-powder preparation under a microwave condition. The invention provides a simple, reliable, rapid, high-efficient, and low-cost method for preparing samarium ferrate nano-powder.

Description

technical field [0001] The invention relates to the preparation of ferrite nano-materials, in particular to a preparation method of samarium ferrite nano-powder. Background technique [0002] Samarium ferrite (SmFeO 3 ) is a kind of ferrite series, which belongs to the perovskite type (ABO 3 ) composite oxides. As reported in the literature (Chinese Journal of Rare Earth, 2007, 25(3): 305-308), perovskite-type composite oxides are a new type of inorganic metal material with unique physical and chemical properties. Stable crystal structure, unique electromagnetic properties, and excellent catalytic activity and gas-sensing properties, so it has a wide range of applications in the fields of optics, electricity, magnetism, and catalysis. [0003] Currently, the preparation of SmFeO 3 The methods mainly include solid phase method, sol-gel method, sonochemical method, microemulsion method and thermal decomposition method. As reported in the literature (Journal of Sensing Tec...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G49/00
Inventor 唐培松陈海锋曹枫潘国祥杨金田
Owner HUZHOU TA HSIANG GLASS PRODS