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Method for synthesizing alpha-Fe2O3/Bi compound through one-step method

A compound, -fe2o3 technology, applied in the field of one-step synthesis of α-Fe2O3/Bi compound, can solve the problem of high cost of precious metal materials

Inactive Publication Date: 2017-11-24
NANJING UNIV OF POSTS & TELECOMM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the cost of precious metal materials is high, so exploring low-cost composite materials has become the focus of research

Method used

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  • Method for synthesizing alpha-Fe2O3/Bi compound through one-step method
  • Method for synthesizing alpha-Fe2O3/Bi compound through one-step method

Examples

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example 1

[0011] (1)Fe(NO 3 ) 3 9H 2 O and Bi(NO 3 ) 3 ·5H 2 The molar ratio of O is selected as 1:1, and 1.2093g of Fe(NO 3 ) 3 9H 2 O and 2.4255g of Bi(NO 3 ) 3 ·5H 2 O was added to 20 mL of ethylene glycol and stirred on a magnetic stirrer for 1 h to obtain a clear precursor.

[0012] (2) Weigh 6.5 g of KOH and dissolve it in 8 mL of deionized water by ultrasonication. While stirring, slowly drop the KOH solution into the precursor solution prepared in the previous step.

[0013] (3) Add 0.2 g of sodium dodecylbenzenesulfonate (SDBS) and 0.5 mL of glycerol to the obtained suspension, and continue stirring for 12 hours.

[0014] (4) Add appropriate amount of deionized water to the uniformly stirred suspension to make 37mL, and transfer it into a 45mL hydrothermal reaction kettle. The reaction kettle was placed in a drying oven, and after reacting at a temperature of 170 degrees Celsius for 50 hours, it was naturally cooled to room temperature. Centrifuge the precipitate ...

example 2

[0017] (1)Fe(NO 3 ) 3 9H 2 O and Bi(NO 3 ) 3 ·5H 2 The molar ratio of O is selected as 2:1, and 2.4186g of Fe (NO 3 ) 3 9H 2 O and 2.4255g of Bi(NO 3 ) 3 ·5H 2 O was added to 20 mL of ethylene glycol and stirred on a magnetic stirrer for 1 h to obtain a clear precursor.

[0018] (2) Weigh 6.5 g of KOH and dissolve it in 8 mL of deionized water by ultrasonication. While stirring, slowly drop the KOH solution into the precursor solution prepared in the previous step.

[0019] (3) Add 0.2 g of sodium dodecylbenzenesulfonate (SDBS) and 0.5 mL of glycerol to the obtained suspension, and continue stirring for 12 hours.

[0020] (4) Add appropriate amount of deionized water to the uniformly stirred suspension to make 37mL, and transfer it into a 45mL hydrothermal reaction kettle. The reaction kettle was placed in a drying oven, and after reacting at a temperature of 170 degrees Celsius for 50 hours, it was naturally cooled to room temperature. Centrifuge the precipitate...

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Abstract

The invention discloses a method for synthesizing an alpha-phase ferric oxide (alpha-Fe2O3) / elementary bismuth (Bi) compound through a one-step method and belongs to the technical field of functional material preparation technologies. The method takes Fe(NO3)3.9H2O and Bi(NO3)3.5H2O as raw materials and comprises the following steps: weighing the raw materials with a proper ratio and dissolving the raw materials into ethylene glycol; then adding a KOH solution to obtain precursor sediment; adding a proper amount of sodium dodecyl benzene sulfonate (SDBS) and glycerol; after sufficiently and uniformly stirring, transferring an obtained mixture into a hydrothermal reaction kettle; reacting at 170 DEG C for 50h; after reaction is finished, naturally cooling to room temperature; after centrifuging and washing, obtaining the alpha-Fe2O3 / Bi compound. The method disclosed by the invention has the advantages of low preparation cost, one-step synthesis, simple technology and the like.

Description

technical field [0001] The present invention is specifically a one-step method for synthesizing α-Fe 2 o 3 The method for the / Bi compound belongs to the technical field of functional material preparation technology. Background technique [0002] α-phase iron oxide (α-Fe 2 o 3 ) is a typical n-type semiconductor metal oxide, the most stable iron oxide, with a narrow band gap of about 2.1eV, strong light absorption in the visible region, and strong photogenerated holes ability, therefore, has been widely used as a visible light catalyst. Moreover, α-Fe with a large specific surface area 2 o 3 Nanomaterials can also be used as sensing and gas-sensing materials, with good stability and strong adhesion, and can be used to detect various gases and biosensing. In addition, as a typical iron oxide, α-Fe 2 o 3 Nanomaterials have the characteristics of high coercivity and superparamagnetism, and can be applied to various magnetic components and magnetic instruments. [0003...

Claims

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Application Information

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IPC IPC(8): B01J23/843
CPCB01J23/8437B01J35/39
Inventor 毛巍威许新姚启富李兴鳌王兴福楚亮
Owner NANJING UNIV OF POSTS & TELECOMM
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