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Preparation method of flower-like Bi/Bi2WO6 nano material

A nanomaterial and flower-like technology, applied in nanotechnology, nanotechnology, chemical instruments and methods, etc., can solve the problems of few synthesis reports of nanomaterials, and achieve the effects of easy large-scale production, good dispersion and easy control

Active Publication Date: 2021-05-28
HANGZHOU DIANZI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, domestic and foreign flower-like Bi / Bi 2 WO 6 There are few reports on the synthesis of nanomaterials

Method used

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  • Preparation method of flower-like Bi/Bi2WO6 nano material
  • Preparation method of flower-like Bi/Bi2WO6 nano material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022]Synthesis of flower BI / BI according to the following process steps2WO6nanomaterials:

[0023]1) Metering amounts of nitrates in deionized water, the concentration of the formed nitrate solution is: 0.2 mol / L (Moore per liter).

[0024]2) Measurement of sodium tungstate is dissolved in deionized water, and the concentration of sodium tungstate formed is: 0.02 mol / L (molar per liter).

[0025]3) In step 1), the solution obtained in step 1) is slowly poured into the solution obtained in step 2), and the molar ratio of ammonium chloride and bismuth of nitrate is 1: 2, stirred to the high pressure reaction kettle after stirring for 5 min, with deionized water Adjusts 4 / 5 of the volume of the reactor volume.

[0026]4) Closing the reactor of the reaction material is closed, and heat treatment is carried out at 140 ° C for 20 hours. Then, fill to room temperature, filtered, washed with deionized water, water absolute ethanol, dried at 60 ° C, transferred to the copper tube.

[0027]5) Fill th...

Embodiment 2

[0031]Synthesis of flower BI / BI according to the following process steps2WO6nanomaterials:

[0032]1) Metering amounts of nitrates are soluble in deionized water, and the concentration of the formed nitrate solution formed is: 0.1 mol / L (Moore per liter).

[0033]2) Measurement of sodium tungstate is dissolved in deionized water, and the concentration of the sodium tungstate formed of the formed tungstate is: 0.01 mol / L (Moore per liter).

[0034]3) In step 1), the solution obtained in step 1 is slowly poured into the solution obtained in step 2), and the molar ratio wherein the molar ratio of ammonium chloride and bismuth nitrate is 1: 1, and then transferred to the high pressure reactor, and the deionized water is adjusted. The volume is 2 / 3 of the reactor volume.

[0035]4) Closing the reactor of the reaction material is closed, and heat treatment is carried out at 120 ° C for 14 hours. Then, fill to room temperature, filtered, washed with deionized water, water absolute ethanol, and d...

Embodiment 3

[0038]Synthesis of flower BI / BI according to the following process steps2WO6nanomaterials:

[0039]1) Metering amounts of nitrates are soluble in deionized water, and the concentration of the formed nitrate solution formed is: 0.1 mol / L (Moore per liter).

[0040]2) Measurement of sodium tungstate is dissolved in deionized water, and the concentration of the sodium tungstate formed of the formed tungstate is: 0.01 mol / L (Moore per liter).

[0041]3) In step 1), the solution obtained in step 1 is slowly poured into the solution obtained in step 2), and the molar ratio wherein the ammonium chloride and bismuth nitrate is 1: 2, and then transferred to a high pressure reactor, and the deionized water is adjusted. The volume is 3 / 4 of the reactor volume.

[0042]4) Closing the reactor of the reaction material is closed, and heat treatment is carried out at 140 ° C for 20 hours. Then, fill to room temperature, filtered, washed with deionized water, water absolute ethanol, and dried at 80 ° C, t...

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Abstract

The invention discloses a preparation method of a flower-like Bi / Bi2WO6 nano material. The preparation method comprises the following steps: 1) weighing bismuth nitrate, dissolving bismuth nitrate in deionized water, and adjusting the concentration of a formed bismuth nitrate solution to 0.1-0.2 mol / L; 2) weighing sodium tungstate, dissolving the sodium tungstate in deionized water, and adjusting the concentration of a formed sodium tungstate solution to 0.01-0.02 mol / L; 3) pouring the bismuth nitrate solution obtained in the step 1) into the sodium tungstate solution obtained in the step 2), adjusting the molar ratio of sodium tungstate to bismuth nitrate to be 1: 1-1: 2, stirring, transferring into a high-pressure reaction kettle, and adjusting by using deionized water until the volume accounts for 2 / 3-4 / 5 of the volume of the high-pressure reaction kettle; 4) sealing the high-pressure reaction kettle with the reaction materials, preserving heat for 14-20 hours at the temperature of 120-140 DEG C, carrying out heat treatment, cooling to room temperature, filtering, cleaning with deionized water and absolute ethyl alcohol, drying at the temperature of 60-80 DEG C, and transferring into a copper pipe; and 5) filling the copper pipe with 0.3-0.4 mPa of hydrogen, sealing, transferring into a tubular furnace, treating at 330-350 DEG C for 2-3 hours, and cooling to room temperature, thereby obtaining the flower-like Bi / Bi2WO6 nano material.

Description

Technical field[0001]The present invention belongs to the field of inorganic non-metallic materials, involving a flower-shaped Bi / Bi2WO6Preparation method of nanomaterials.Background technique[0002]Tungstate (Bi2WO6) Is a new type of photocatalyst having a narrow bi-band width having a banned width of about 2.7 eV, and can absorb visible light within 450 nm. Therefore, it can catalyze the degradation of organic pollutants under visible light, effectively improve the sun. Light utilization efficiency. [BI2O2] And [WO4Ending a perovskite laminated structure along the direction of [001], it has a unique physical chemical properties in the direction of [001] to make it a potential application in the field of photocatalytic and ferrite in the field. At the same time, its raw material resources are rich, and the environment is good for environmentally friendly and stability, so it has broad application prospects. At the same time, two semiconductors are combined into a means of improvin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F9/26B22F1/00B82Y30/00B82Y40/00C01G41/00
CPCB22F9/26C01G41/00B82Y40/00B82Y30/00B22F1/0553B22F1/054Y02E60/36Y02W10/37
Inventor 鲍亮张怀伟白王峰吴诗婷元勇军陈逸凡
Owner HANGZHOU DIANZI UNIV