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Preparation method of Fe-doped oxyhalogen bismuth nanometer material

A technology of nanomaterials and bismuth oxyhalides, which is applied in nanotechnology, nanotechnology, chemical instruments and methods, etc., can solve the problems of long reaction time and unfavorable popularization and application, and achieve short reaction time, reduce production cost and save energy Effect

Inactive Publication Date: 2016-01-20
WUHAN INSTITUTE OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, there are not many reports on Fe-doped BiOX (X=Cl, Br) nanomaterials. Xia et al. (Crystengcomm2013, 15, 10132-10141) reported the use of ionic liquids and the reaction at 140 ° C by solvothermal method 24h, Fe-doped BiOCl was synthesized; Liu et al. (Catalysis Letters 2012, 142, 1489-1497) reported that Bi(NO 3 ) 3 ·5H 2 O, Fe(NO 3 ) 3 9H 2 O and CTAB were dissolved in EG solution and reacted at 160°C for 8 hours by solvothermal method to synthesize Fe-doped BiOBr; Jiang et al. 3 ) 3 ·5H 2 O, FeCl 3 and CTAB were dissolved in 2-methoxyethanol, and reacted at 160°C for 24 hours to obtain Fe-doped BiOBr; the existing preparation method requires high temperature and high pressure conditions, and the reaction time is long, which is not conducive to popularization and application

Method used

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Embodiment 1

[0028] A preparation method of Fe-doped bismuth oxyhalide nanomaterial (Fe-doped BiOCl) includes the following steps:

[0029] Dissolve 2mmol of bismuth nitrate pentahydrate in 50mL of ethylene glycol and mix well to obtain a mixed ethylene glycol solution, then dissolve 2mmol of potassium chloride and 0.5mmol of ferric nitrate nonahydrate in 40mL of deionized water and mix well to obtain a mixed aqueous solution; Add the prepared mixed aqueous solution dropwise to the mixed ethylene glycol solution at room temperature (25°C), place the resulting mixed solution in a 40KHz sonicator for ultrasonic dispersion (reaction) for 20 minutes, and centrifuge the resulting precipitate to remove residual solutes And solvent, and finally dried at 60 ℃ for 12h, cooling to obtain the final product.

[0030] figure 1 This is the XRD pattern of the product obtained in the present invention. It can be seen from the pattern that the main peak is consistent with the standard pattern JCPDS: 73-2060, an...

Embodiment 2

[0033] A preparation method of Fe-doped bismuth oxyhalide nanomaterial (Fe-doped BiOBr) includes the following steps:

[0034] Dissolve 2mmol of bismuth nitrate pentahydrate in 40mL of ethylene glycol and mix well to obtain a mixed ethylene glycol solution, then dissolve 2mmol of potassium bromide and 1mmol of ferric nitrate nonahydrate in 50mL of deionized water and mix well to obtain a mixed aqueous solution; Add the prepared mixed aqueous solution dropwise to the mixed ethylene glycol solution at room temperature (25°C), place the resulting mixed solution in a 40KHz sonicator for ultrasonic dispersion (reaction) for 20 minutes, and centrifuge the resulting precipitate to remove residual solute and The solvent is finally dried at 60°C for 12 hours and cooled to obtain the final product.

[0035] image 3 This is the XRD pattern of the product obtained in the present invention. It can be seen from the pattern that the main peak is consistent with the standard pattern JCPDS: 73-206...

Embodiment 3

[0039] A preparation method of Fe-doped bismuth oxyhalide nanomaterial (Fe-doped BiOCl) includes the following steps:

[0040] Dissolve 1mmol of bismuth nitrate pentahydrate in 30mL of ethylene glycol and mix well to obtain a mixed ethylene glycol solution, then dissolve 1mmol of potassium chloride and 1mmol of ferric nitrate nonahydrate in 100mL of deionized water and mix well to obtain a mixed aqueous solution; Add the prepared mixed aqueous solution dropwise to the mixed glycol solution at room temperature (20°C), place the resulting mixed solution in a 40KHz sonicator for ultrasonic dispersion (reaction) for 20 minutes, and centrifuge the resulting precipitate to remove residual solute and The solvent is finally dried at 60° C. for 12 hours and cooled to obtain the Fe-doped bismuth oxyhalide nanomaterial (Fe-doped BiOCl).

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Abstract

The invention discloses a preparation method of a Fe-doped oxyhalogen bismuth nanometer material. The method comprises the following steps of respectively preparing an ethylene glycol solution of pentahydrate bismuth nitrate and a water solution of halite and iron nitrate nonahydrate; at the room temperature, dripping the obtained water solution into the ethylene glycol solution; using the ultrasonic effect as an auxiliary measure to take reaction; finally, washing, drying and cooling obtained precipitates to obtain the Fe-doped oxyhalogen bismuth nanometer material. The preparation method has the advantages that the one-step synthesis process of the Fe-doped oxyhalogen bismuth nanometer material can be realized under the room-temperature condition; high-temperature and high-pressure conditions are not needed; the reaction conditions are mild; the reaction time is short; the energy is saved; the consumption is reduced; the related synthesis process is simple; the raw material cost and the production cost are low; the repeatability is good; the preparation method is suitable for industrial popularization and application.

Description

Technical field [0001] The invention belongs to the technical field of functional material preparation, and specifically relates to a preparation method of Fe-doped bismuth oxyhalide nano material. Background technique [0002] Environmental pollution is getting worse and seriously endangering human health. Since 1972, Fujishima and Honda discovered TiO 2 Since the photolysis of water with single crystal electrodes, photocatalytic technology has provided a new way of thinking for the treatment of environmental pollution. Traditional TiO 2 The photocatalyst has received wide attention due to its anti-chemical and photo-corrosion, stable properties, non-toxicity, high catalytic activity, and low price. However, its band gap is wide, and it can only absorb ultraviolet light and cannot effectively use sunlight, which limits TiO 2 Development in practical applications. Therefore, the development of more effective photocatalysts to degrade pollutants has become a hot spot for scientist...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/128B82Y30/00
Inventor 陈嵘田凡袁梦倩杨浩赵慧平
Owner WUHAN INSTITUTE OF TECHNOLOGY
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