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Preparation method and application of metal element doped BiOCl nanosheet material

A technology of metal elements and nanosheets, applied in nanotechnology, chemical instruments and methods, inorganic chemistry, etc., can solve the problems of high cost and complicated synthesis process, and achieve the effect of mild process conditions, simple preparation process and high product purity

Active Publication Date: 2018-08-10
XIANGTAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, these methods generally have problems such as complex synthesis process and high cost.

Method used

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  • Preparation method and application of metal element doped BiOCl nanosheet material
  • Preparation method and application of metal element doped BiOCl nanosheet material
  • Preparation method and application of metal element doped BiOCl nanosheet material

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Experimental program
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Effect test

Embodiment 1

[0031] (1) Mix 2mmol sodium bismuthate, 0.6mmol metal bismuth powder, 0.01mmol ferric ammonium oxalate, 2mmol potassium chloride, and 0.02mmol polyvinylpyrrolidone to obtain a raw material mixture; The mass ratio is added to the ball mill, air is introduced, ball milling is carried out at a speed of 800rpm for 8h, and the mixture after ball milling is heat-treated at a constant temperature of 300°C for 5h, and then the heat-treated product is washed with deionized water and absolute ethanol to remove impurities, Solid-liquid separation was carried out by filtration, and finally the solid product obtained by filtration was vacuum-dried at 90° C. for 12 hours to obtain a 5% iron-doped BiOCl nanosheet material.

[0032] (2) Adopt JEOLJEM-3010 scanning electron microscope to characterize the iron-doped BiOCl nanosheet material obtained in embodiment 1, such as figure 1 As shown, the iron-doped BiOCl nanosheet material is composed of square nanosheets with a thickness of 5-10 nm an...

Embodiment 2

[0034] (1) Mix 2mmol potassium bismuthate, 2mmol sodium sulfite, 0.016mmol copper acetate, 2mmol ammonium chloride, and 0.01mmol polyethylene glycol to obtain a raw material mixture; add the raw material mixture and ceramic balls in a mass ratio of 1:100 Put nitrogen into the ball mill tank, and carry out ball milling at a speed of 1500rpm for 6h. The mixture after ball milling was heat-treated at a constant temperature of 400°C for 3h, and then the heat-treated product was washed with deionized water and absolute ethanol to remove impurities, and filtered Perform solid-liquid separation, and finally dry the solid product obtained by filtration at 110° C. for 10 h to obtain 8% copper-doped BiOCl nanosheet material.

[0035] (2) adopt JEOLJEM-3010 scanning electron microscope to characterize the copper-doped BiOCl nanosheet material obtained in embodiment 2, as figure 2 As shown, the material is composed of square nanosheets with a thickness of 5-10 nm and a planar size of abo...

Embodiment 3

[0037](1) Mix 2mmol magnesium bismuthate, 0.5mmol paraformaldehyde, 0.2mmol cobalt sulfate, 2mmol sodium chloride, and 0.03mmol sodium dodecylbenzenesulfonate to obtain a raw material mixture; mix the raw material mixture with zirconia balls Add it to the ball mill tank at a mass ratio of 1:70, feed carbon dioxide, and carry out ball milling at a speed of 1000rpm for 6h. Washing with water and ethanol to remove impurities, using filtration for solid-liquid separation, and finally drying the solid product obtained by filtration at 120° C. for 10 h to obtain 10% cobalt-doped BiOCl nanosheet material.

[0038] (2) The prepared samples were made into electrode sheets, assembled with nickel hydroxide positive electrode sheet and 6mol / L KOH solution to form an alkaline secondary battery, and the CHI660A electrochemical workstation produced by Shanghai Chenhua Co. Sub-alkaline cells were subjected to cyclic voltammetry tests at room temperature. like image 3 As shown in the cyclic...

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Abstract

The invention relates to a preparation method and an application of a metal element doped BiOCl nanosheet material. The method comprises the steps of taking bismuthate, a doped source, a reducer, a chlorine source and an accessory ingredient as raw materials, synchronously applying a mechanical force of a high energy ball mill onto an oxidoreduction reaction, a doping reaction and a chlorination reaction, and performing heat treatment, washing, purification, solid-liquid separation and drying to form the metal element doped BiOCl nanosheet material. A mole ratio of a doped metal element to a bismuth element in the prepared material is (0.01-0.3):1; the material comprises a nanosheet that is 20-500 nm in planar size and 1-20 nm in thickness; the specific surface area of the material is 3-300 m<2> / g. The method is simple in technology, high in industrial production possibility, low in manufacturing technology cost and environmentally friendly; the prepared metal element doped BiOCl nanosheet material is widely applied to the fields of supercapacitors, alkaline secondary batteries, lithium ion batteries, photocatalysts, pearlescent pigments, medicines and the like.

Description

technical field [0001] The invention relates to a preparation method and application of a metal element-doped BiOCl nanosheet material, which belongs to the field of new functional materials. Background technique [0002] Bismuth oxychloride is an important functional material. Due to its unique microstructure and physical and chemical properties, non-toxicity and low cost, it is widely used in electrode active materials, catalysts, pigments, cosmetics, gas sensors, electronic materials, medical materials and other fields. Has a wide range of applications. In order to further improve the performance of BiOCl materials, metal element doping is an important means. [0003] The structure and performance of materials are closely related to the preparation process. At present, the methods for synthesizing ultrafine functional powders can be divided into physical methods and chemical methods according to the synthesis principles. These methods have been widely used in the synth...

Claims

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Application Information

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IPC IPC(8): C01G29/00B82Y40/00
CPCB82Y40/00C01G29/00C01P2004/03C01P2004/20C01P2006/12
Inventor 刘恩辉周勇韩秀莉洪伟峰
Owner XIANGTAN UNIV
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