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Silver bismuth acid nanowires and preparation method thereof

A technology of nanowires and silver bismuthate, applied in chemical instruments and methods, bismuth compounds, physical/chemical process catalysts, etc., can solve the problems of difficult recovery of photocatalysts, irregular sample shapes, and low photocatalytic efficiency, and achieve production The effect of simple process, low production cost and high catalytic efficiency

Inactive Publication Date: 2019-03-12
CHENGDU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Aiming at the above-mentioned deficiencies in the prior art, the present invention provides a kind of silver bismuthate nanowire and its preparation method, which can effectively solve the problems of irregular shape of the sample prepared by the existing preparation method, difficult photocatalyst recovery and low photocatalytic efficiency

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  • Silver bismuth acid nanowires and preparation method thereof
  • Silver bismuth acid nanowires and preparation method thereof
  • Silver bismuth acid nanowires and preparation method thereof

Examples

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Embodiment 1

[0027] A preparation method of silver bismuth acid nanowires, comprising the following steps:

[0028] (1) Add 50ml of silver nitrate solution of 0.02M dropwise to 50ml of sodium bismuthate solution of 0.005M while stirring. Nitric acid adjusts the pH value of the mixed solution to 3;

[0029] (2) Put the product obtained in step (1) into the reaction kettle, tighten the reaction kettle, the material of the outer shell of the reaction kettle is chromium-nickel alloy (304Ⅱ), and the lining material is polytetrafluoroethylene; then place the reaction kettle in an electric blast drying In the box, under the condition of 150 ℃, carry out the hydrothermal synthesis reaction, react for 12h, then cool to room temperature, then filter, and collect the sediment in the reaction kettle;

[0030] (3) Ultrasonic clean the sediment with deionized water for 5 minutes, then centrifuge in a centrifuge at 15000r / min for 5 minutes, collect the sediment, use the sediment as the substrate, repeat...

Embodiment 2

[0032] A preparation method of silver bismuth acid nanowires, comprising the following steps:

[0033] (1) While stirring, 50ml of silver nitrate solution with a concentration of 0.02M is added dropwise to 50ml of sodium bismuthate solution with a concentration of 0.01M. Adjust the pH value of the mixed solution to 3.5;

[0034] (2) Put the product obtained in step (1) into the reaction kettle, tighten the reaction kettle, the material of the outer shell of the reaction kettle is chromium-nickel alloy (304Ⅱ), and the lining material is polytetrafluoroethylene; then place the reaction kettle in an electric blast drying In the box, under the condition of 120 ℃, carry out the hydrothermal synthesis reaction, react for 10h, then cool to room temperature, then filter, and collect the sediment in the reaction kettle;

[0035] (3) Use deionized water to ultrasonically clean the sediment for 5 minutes, then centrifuge it in a centrifuge at 16000r / min for 5 minutes, collect the sedime...

Embodiment 3

[0037] A preparation method of silver bismuth acid nanowires, comprising the following steps:

[0038] (1) While stirring, 50ml of silver nitrate solution with a concentration of 0.03M was added dropwise to 50ml of sodium bismuthate solution with a concentration of 0.02M. Adjust the pH value of the mixed solution to 3;

[0039] (2) Put the product obtained in step (1) into the reaction kettle, tighten the reaction kettle, the material of the outer shell of the reaction kettle is chromium-nickel alloy (304Ⅱ), and the lining material is polytetrafluoroethylene; then place the reaction kettle in an electric blast drying In the box, under the condition of 180 ℃, carry out the hydrothermal synthesis reaction, react for 12h, then cool to room temperature, then filter, and collect the sediment in the reaction kettle;

[0040] (3) Ultrasonic clean the sediment with deionized water for 5 minutes, then centrifuge in a centrifuge at 15000r / min for 5 minutes, collect the sediment, use th...

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Abstract

The invention discloses an AgBiO3 nanowire and preparation method thereof. The preparation method comprises the following steps: (1) in the mixing process, adding dropwise a silver nitrate solution to a sodium bismuthate solution, and then adjusting pH of the mixed solution to 3-3.5; (2) placing the product obtained by the step (1) in a reactor for hydrothermal synthesis reaction for 10-12h, cooling to room temperature, and collecting a sediment; (3) using deionized water for ultrasonic cleaning of the sediment for 3-5min, centrifuging, collecting the sediment, using the sediment as a substrate, repeating the cleaning and centrifuging operation for 1-2 times, using anhydrous ethanol for cleaning, centrifuging, removing supernatant, and drying at 60-70 DEG C under vacuum for 2-3H to obtain the AgBiO3 nanowire. The AgBiO3 prepared by the method has a perfect appearance and nano-scale diameter, length-to-diameter ratio is more than 100, and no obvious defects and massive solid aggregates are observed.

Description

technical field [0001] The invention belongs to the technical field of semiconductor photocatalytic materials and nano-conductive materials, and in particular relates to a silver bismuthate nanowire and a preparation method thereof. Background technique [0002] Energy crisis and environmental pollution have become urgent problems to be solved in countries all over the world. The development of semiconductor photocatalysis technology has opened up a new path to solve these two world-wide problems. Silver bismuthate is a new type of photocatalytic material, and its material preparation and performance research has gradually become a hot spot in the field of photocatalysis. At the same time, silver bismuthate is also a semiconductor material with an optical bandgap of 3.2eV and a corresponding light absorption threshold wavelength of about 388nm. At present, the research on silver bismuth oxide materials mainly focuses on the preparation and characterization of micron particl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G29/00B01J23/68
CPCB01J23/681B01J35/004B01J35/06C01G29/00C01P2002/72C01P2002/84C01P2004/03C01P2004/10C01P2004/54C01P2004/61C01P2004/62
Inventor 雷霖余开江余庚华
Owner CHENGDU UNIV