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Elementary substance Bi nano-structured material and preparation method and application thereof

A nanostructure and elemental technology, applied in the fields of nanostructure manufacturing, nanotechnology, nanotechnology, etc., can solve problems such as not being widely developed and lack of Bi nanostructure materials

Inactive Publication Date: 2011-10-12
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 nanostructured materials as technical support.

Method used

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  • Elementary substance Bi nano-structured material and preparation method and application thereof
  • Elementary substance Bi nano-structured material and preparation method and application thereof
  • Elementary substance Bi nano-structured material and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Example 1. Preparation of Bi elemental nanostructure material

[0020] 0.2g of surfactant sodium polystyrene sulfonate was dissolved in 50g of water and stirred on a magnetic stirrer for 0.8 hours. After it was completely dissolved, 2g of hydrazine hydrate was added and stirred for 0.5 hours, then 0.3g of bismuth trichloride was dispersed in it and stirred 0.8 hours. The obtained white suspension was transferred to a polytetrafluoroethylene lined stainless steel hydrothermal reactor with a capacity of 80 mL, and after sealing, it was placed in an oven and heated at 90°C for 28 hours. After the completion of the reaction, the hydrothermal reactor was allowed to stand to cool down in a room temperature environment. The obtained product was transferred to a centrifuge tube and centrifuged at 1000 rpm for 10 minutes; the precipitate was discarded, the upper suspension was transferred to a centrifuge tube, and centrifuged at 8000 rpm for 15 minutes, and the upper layer was dis...

Embodiment 2

[0023] Example 2. Preparation of Bi elemental nanostructure material

[0024] Dissolve 0.3g of sodium polystyrene sulfonate as a surfactant in 50g of water, stir for 1 hour on a magnetic stirrer, add 1g of hydrazine hydrate and stir for 0.5 hour, then disperse 0.35g of bismuth trichloride in it and stir. 1 hour. The obtained white suspension was transferred to a polytetrafluoroethylene-lined stainless steel hydrothermal reactor with a capacity of 80 mL, and after sealing, it was placed in an oven and heated at 100°C for 26 hours. After the completion of the reaction, the hydrothermal reactor was allowed to stand to cool down in a room temperature environment. The resulting product was transferred to a centrifuge tube and centrifuged at a speed of 1500 rpm for 12 minutes; the precipitate was discarded, the upper suspension was transferred to a centrifuge tube, and centrifuged at a speed of 10,000 rpm for 15 minutes, and the upper layer was discarded liquid. The product obtained...

Embodiment 3

[0027] Example 3. Preparation of Bi elemental nanostructure material

[0028] 0.4g of surfactant sodium polystyrene sulfonate was dissolved in 50g of water, stirred on a magnetic stirrer for 0.5 hours, after complete dissolution, 2.5g of hydrazine hydrate was added, stirred for 1 hour, and 0.4g of bismuth trichloride was dispersed in it. Stir for 0.5 hour. The obtained white suspension was transferred to a polytetrafluoroethylene-lined stainless steel hydrothermal reactor with a capacity of 80 mL, and after sealing, it was placed in an oven and heated at 110°C for 24 hours. After the completion of the reaction, the hydrothermal reactor was allowed to stand to cool down in a room temperature environment. The obtained product was transferred to a centrifuge tube and centrifuged at 1000 rpm for 15 minutes; the precipitate was discarded, the upper suspension was transferred to a centrifuge tube, and centrifuged at 10,000 rpm for 15 minutes, and the upper layer was discarded liquid....

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Abstract

The invention discloses an elementary substance Bi nano-structured material and a preparation method and an application thereof. The elementary substance Bi nano-structured material is a flower-shaped nano particle comprising platy hexagonal phase elementary substances Bi which are used as structural units. The preparation method of the elementary substance Bi nano-structured material comprises the following steps of: dissolving a surfactant, hydrazine hydrate and a bismuth salt in water, and preparing into turbid liquid; and reacting the turbid liquid at the temperature of 80 to 120 DEG C for 18 to 30 hours, and centrifuging the turbid liquid to obtain the elementary substance Bi nano-structured material. The elementary substance Bi nano-structured material can be used for preparing Bi modified electrodes. The obtained Bi modified electrodes can be used for detecting heavy metal ions in an aqueous solution, and the detection limit can reach 1 x 10<-4> grams per liter.

Description

Technical field [0001] The invention relates to the technical field of inorganic advanced materials, in particular 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 to human health in today's society. Establishing a fast, reliable, and accurate method for detecting heavy metal ions in various media is particularly important whether it is in environmental protection or consumer product safety monitoring. Commonly used heavy metal detection methods include thiohydrazone coloration 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 On-site detection applications with special needs are subject to certain restrictions. As an ideal electrochemical analys...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C30B29/02B22F9/18B82B1/00B82B3/00
Inventor 杨海峰闫妍张庆李俊芳卢晓静白桦王超
Owner CHINESE ACAD OF INSPECTION & QUARANTINE
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