Bi elementary substance nanostructured materials and preparation method and application thereof

A nanostructure and elemental technology, applied in the direction of electrochemical variables of materials, etc., can solve the problems such as the lack of widespread development and the lack of Bi elemental nanostructured materials, and achieve the effect of facilitating industrial production, fewer steps, and high sensitivity

Inactive Publication Date: 2013-05-29
CHINESE ACAD OF INSPECTION & QUARANTINE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Unfortunately, such research has not been widely carried out due to the lack of high-quality Bi single-mass nanostructured materials as technical support.

Method used

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  • Bi elementary substance nanostructured materials and preparation method and application thereof
  • Bi elementary substance nanostructured materials and preparation method and application thereof
  • Bi elementary substance nanostructured materials and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Embodiment 1, preparation Bi elemental nanostructure material

[0022] Dissolve 0.4g of surfactant Pluronic F127 in 50g of water, first add 2.06g of hydrazine hydrate, then disperse 0.36g of bismuth chloride in it, stir and mix to obtain a suspension. The obtained suspension is transferred into a polytetrafluoroethylene-lined stainless steel hydrothermal reaction kettle with a capacity of 80ml (the reaction kettle is resistant to acid and alkali, corrosion resistance, and high temperature) and sealed, and heated at 165°C in an oven for 3 hours, and the reaction is over. Finally, the reaction product was centrifuged at a speed of 8000 rpm for 15 minutes, and the upper layer liquid was discarded to obtain a centrifuged product. After the centrifuged product was ultrasonically cleaned with excess ethanol for 8 minutes, it was centrifuged at a speed of 8000 rpm. After 15 minutes, the upper layer liquid was discarded, and the obtained black solid product was transferred to a...

Embodiment 2

[0025] Embodiment 2, preparation Bi elemental nanostructure material

[0026] Dissolve 0.5g of surfactant Pluronic F127 in 50g of water, first add 2.06g of hydrazine hydrate, then disperse 0.2g of bismuth chloride in it, stir and mix to obtain a suspension. Transfer the obtained suspension into a polytetrafluoroethylene-lined stainless steel hydrothermal reaction kettle with a capacity of 80ml and seal it, and heat it in an oven at 170°C for 4 hours. Centrifuge for 15 minutes, discard the supernatant liquid, and obtain the centrifuged product. The centrifuged product was ultrasonically cleaned with excess ethanol for 8 minutes, centrifuged at a speed of 8000 rpm for 15 minutes, the upper layer liquid was discarded, the obtained black solid product was transferred to a watch glass, and dried at natural ambient temperature for 1 day , to obtain Bi simple substance nanostructure materials.

[0027] Bi elemental nanostructure materials were characterized by XRD, laser particle s...

Embodiment 3

[0029] Embodiment 3, preparation Bi elemental nanostructure material

[0030] Dissolve 0.35g of surfactant Pluronic F127 in 50g of water, first add 2.06g of hydrazine hydrate, then disperse 0.15g of bismuth chloride in it, stir and mix to obtain a suspension. The resulting suspension was transferred into a polytetrafluoroethylene-lined stainless steel hydrothermal reaction kettle with a capacity of 80 ml and sealed, then heated in an oven at 150° C. for 5 hours. After the reaction, the reaction product was centrifuged at 8000 rpm for 15 minutes, and the upper layer liquid was discarded to obtain the centrifuged product. The centrifuged product was ultrasonically cleaned with excess ethanol for 8 minutes, centrifuged at a speed of 8000 rpm for 15 minutes, the upper liquid was discarded, the obtained black solid product was transferred to a watch glass, and dried at natural ambient temperature and under ventilation for 1 day. Obtain Bi simple substance nanostructure material. ...

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Abstract

The invention relates to Bi elementary substance nanostructured materials and a preparation method and application of the Bi elementary substance nanostructured materials. The Bi elementary substance nanostructured materials have the advantages that the Bi elementary substance nanostructured materials are applied to a modified electrode, and obtained electrode sensitivity is high. Steps of the preparation method are few, very high-demand experiment conditions are not needed, the preparation process is fast and commercial process is benefited. The Bi elementary substance nanostructured materials are made of piece-shaped hexagonal crystal phase Bi elementary substance nano-particles with the thicknesses of 20-30nm and the plane dimension of 200-1200nm. The invention further relates to the preparation method of the Bi elementary substance nanostructured materials, and the method comprises a first step of dissolving a surface active agent, hydrazine hydrate and bismuth chloride to water to prepare turbid liquid and a second step of reacting of the turbid liquid for 2-10 hours under the condition of 150-200 DEG C to be centrifuged to obtain the Bi elementary substance nanostructured materials.

Description

technical field [0001] The invention relates to a Bi elemental nanostructure material and a preparation method and application thereof. Background technique [0002] Heavy metal elements, such as Cr, Cd, Pb and Hg, have become one of the most serious harmful factors threatening human health in today's society. It is particularly important to establish a fast, reliable and accurate method to detect heavy metal ions in various media, whether it is in environmental protection or consumer product safety monitoring. Commonly used detection methods for heavy metal elements include thizone chromogenic method and atomic absorption spectrometry. These two methods involve complex sample pretreatment methods, high detection process costs, and certain requirements for instruments. They are widely used, especially for The field detection application of special needs is subject to certain restrictions. As an ideal electrochemical analysis method, stripping voltammetry has received exten...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F9/26G01N27/30
Inventor 杨海峰李俊芳闫妍卢晓静
Owner CHINESE ACAD OF INSPECTION & QUARANTINE
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