Preparation method and application of {010} high-energy facet exposed BiOCl nanosheet

A {010}, nanosheet technology, applied in the field of new functional materials, can solve the problems of high manufacturing cost, cumbersome steps, unsuitable for industrial production, etc., and achieves environmental friendliness, simple preparation process, and easy control of microscopic morphology and particle size. Effect

Inactive Publication Date: 2018-07-13
XIANGTAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, these synthetic methods either need to control the pH value of the reaction system, or need to carry out the reaction under high temperature and pressure, and there are problems such as cumbersome steps, high manufacturing cost, and unsuitable for industrial production.

Method used

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  • Preparation method and application of {010} high-energy facet exposed BiOCl nanosheet
  • Preparation method and application of {010} high-energy facet exposed BiOCl nanosheet
  • Preparation method and application of {010} high-energy facet exposed BiOCl nanosheet

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Experimental program
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Effect test

Embodiment 1

[0028] 1. Mix the raw materials 10mmol bismuth nitrate, 10mmol potassium chloride and 30mmol potassium hydroxide evenly, add the raw material mixture and corundum balls into the ball mill tank at a mass ratio of 1:80, and ball mill for 6 hours at a speed of 1000rpm to obtain the precursor Then put the precursor in the muffle furnace, set the heating rate at 5°C / min, keep the temperature at 450°C for 4 hours, cool to room temperature, take out the sample, and then wash the sample with deionized water and absolute ethanol to remove impurities 1. Solid-liquid separation is carried out by filtration, and finally the solid product obtained by filtration is vacuum-dried at 100° C. for 12 hours to prepare a BiOCl nanosheet material.

[0029] 2. Carry out X-ray diffraction test to the BiOCl nano sheet material prepared in embodiment 1, as figure 1 As shown, the crystal phase of the obtained BiOCl nanosheet product is pure, without other impurity peaks, and the crystallinity is good. ...

Embodiment 2

[0031] 1. Mix the raw materials 5mmol bismuth oxide, 10mmol zinc chloride and 50mmol potassium citrate evenly, add the raw material mixture and porcelain grinding balls into the ball milling tank at a mass ratio of 1:100, and ball mill for 8 hours at a speed of 800rpm to obtain Then put the precursor in the muffle furnace, set the heating rate at 5°C / min, keep the temperature at 500°C for 2 hours, cool to room temperature, take out the sample, and then wash the sample with deionized water and absolute ethanol to remove Miscellaneous, solid-liquid separation was carried out by filtration, and finally the solid product obtained by filtration was dried at 110° C. for 12 hours to prepare BiOCl nanosheet material.

[0032] 2. Carry out transmission electron microscope test to the BiOCl nano sheet material prepared by embodiment 2, as figure 2 , 3 as shown, figure 2 The two lattice fringe spacings 0.3692nm and 0.1950nm marked in , respectively match the (002) crystal plane and (...

Embodiment 3

[0034] 1. Mix the raw materials 5mmol bismuth sulfate, 5mmol ammonium chloride and 50mmol sodium acetate evenly, add the raw material mixture and stainless steel balls into the ball mill tank at a mass ratio of 1:50, and ball mill for 4 hours at a speed of 1500rpm to obtain the precursor , and then put the precursor in the muffle furnace, set the heating rate to 5°C / min, keep the temperature at 400°C for 5h, cool to room temperature, take out the sample, and then wash the sample with deionized water and absolute ethanol to remove impurities, The solid-liquid separation was carried out by filtration, and finally the solid product obtained by filtration was dried at 90° C. for 16 h to prepare the BiOCl nanosheet material.

[0035] 2. Carry out scanning electron microscope test to the BiOCl nano sheet material prepared by embodiment 3, as Figure 4As shown, it can be seen from the scanning electron microscope image of the sample that the prepared BiOCl nanosheet material is compo...

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Abstract

The invention relates to a preparation method and application of a {010} high-energy facet exposed BiOCl nanosheet. The preparation method comprises the following steps of uniformly mixing a bismuth source, a chlorine source and an alkali source according to a certain ratio, applying the mechanical force of high-energy ball milling to chemical reaction, then performing heat treatment at 200-600 DEG C, and then performing impurity removal with washing, solid-liquid separation and drying to prepare BiOCl nanosheet. The prepared BiOCl material is formed by a nanosheet with the thickness being 5-50nm and the side length being 150-250nm, and the {010} facet exposure degree is 60-90 percent. The preparation method has the advantages of simpleness in preparation technology, easiness in realizingindustrial production, low cost of the preparation technology, environmental protection and the like. The prepared {010} high-energy facet exposed BiOCl nanosheet is widely applied to the fields of super capacitors, alkaline storage batteries, lithium ion batteries, photocatalysts, pearlescent pigments and medicines and the like.

Description

technical field [0001] The invention relates to a preparation method and application of a {010} high-energy crystal plane exposed BiOCl nanosheet material and 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, and its non-toxicity and low cost, it has a wide range of potential applications. It has been widely used in electrode active materials, catalysts, pigments, cosmetics, etc. , gas sensors, electronic materials, medical materials and other fields. BiOCl crystals consist of double Cl - Ion layer and [Bi 2 o 2 ] 2+ The layers are arranged alternately along the (001) direction to form an anisotropic layered structure, which is conducive to the transport of electrons. Since the {001} crystal plane is a low-energy crystal plane of BiOCl, the current research on BiOCl materials with specific crystal plane exposure is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G29/00B82Y40/00H01M4/58H01M10/0525
CPCC01G29/00C01P2002/72C01P2004/03C01P2004/04C01P2004/20C01P2004/62C01P2004/64H01M4/582H01M10/0525Y02E60/10
Inventor 刘恩辉洪伟峰韩秀莉周勇
Owner XIANGTAN UNIV
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