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Method for preparing BiOCuS nanosheets by adopting concentrated alkali hydrothermal method

A nano-sheet and alkaline water technology, applied in the field of materials science, can solve the problems of high raw material requirements, complex process and high energy consumption, and achieve the effects of lowering reaction temperature, simple operation and low cost.

Inactive Publication Date: 2017-05-31
SHANGHAI INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Aiming at the above-mentioned technical problems in the prior art, the invention provides a kind of method that adopts concentrated alkali hydrothermal method to prepare BiOCuS nanosheet, and described this adopts the method for preparing BiOCuS nanosheet by concentrated alkali hydrothermal method to solve existing The method of preparing BiOCuS nanosheets in the technology is complicated in process, high in energy consumption and high in raw material requirements

Method used

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  • Method for preparing BiOCuS nanosheets by adopting concentrated alkali hydrothermal method
  • Method for preparing BiOCuS nanosheets by adopting concentrated alkali hydrothermal method
  • Method for preparing BiOCuS nanosheets by adopting concentrated alkali hydrothermal method

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Embodiment 1

[0021] Firstly, 6 mmol of sulfur powder, 4 mmol of copper chloride, 2 mmol of bismuth nitrate pentahydrate, 5 g of potassium hydroxide, and 10 mL of deionized water were successively added into the reactor, and stirred at room temperature for 30 min until the reaction Then the reactor was sealed and placed in a vacuum oven at 200 °C for 3 days, and finally centrifuged and dried to obtain BiOCuS nanosheets.

Embodiment 2

[0023] First, the reactant precursors 8 mmol sodium sulfide, 6 mmol copper oxide, 4 mmol bismuth acetate, 10 g cesium hydroxide, and 20 mL deionized water were added to the reaction kettle in sequence, and stirred at room temperature for 15 min until the reactants were dissolved. Then seal the reaction kettle and place it in a vacuum oven at 240 °C for 4 days to react, and finally centrifuge and dry to obtain BiOCuS nanosheets.

Embodiment 3

[0025] First, 30 mmol of thiourea, 16 mmol of cuprous chloride, 8 mmol of bismuth oxide, 20 g of sodium hydroxide, and 50 mL of deionized water were successively added to the reaction kettle, and stirred at room temperature for 20 min until the reactants Dissolve, then seal the reaction vessel and place it in a vacuum oven at 200 °C for 5 days, and finally centrifuge and dry to obtain BiOCuS nanosheets.

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Abstract

The invention discloses a method for preparing BiOCuS nanosheets by adopting concentrated alkali hydrothermal method. The preparation method comprises the following steps: firstly, sequentially adding reactant precursor sulfur-containing compound, copper oxide or soluble copper salt, bismuth oxide or soluble bismuth salt, strong base and deionized water into a reaction kettle, stirring at room temperature until the reactants are dissolved, and then sealing the reaction kettle and placing the kettle into a vacuum oven at 180-240 DEG C, allowing the raw materials to react for 1-5 days, and finally centrifuging and drying to obtain the BiOCuS nanosheets. The method disclosed by the invention is simple to operate, the preparation is easy, the element stoichiometric ratio is controlled accurately, and the used precursor material is low in cost without toxicity, and the prepared nanosheets can be used as superconducting materials.

Description

technical field [0001] The invention belongs to the field of materials science and relates to a superconducting material, in particular to a method for preparing BiOCuS nanosheets by a concentrated alkali hydrothermal method. Background technique [0002] Since the discovery of copper oxide high-temperature superconductors in 1986, high-temperature superconducting materials have attracted extensive attention from the scientific community for their good application prospects. From the discovery of superconductivity to the present, people have been exploring and researching superconducting materials for a hundred years. There are more and more types of superconducting materials. From the initial superconducting elements and superconducting metal alloys, it has been gradually developed. So far, copper-based oxide high-temperature superconductors, iron-based superconductors, and various organic superconductors have been discovered. In the short period of time that followed, res...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G29/00
CPCC01G29/006C01P2002/20C01P2002/72C01P2004/03C01P2004/62C01P2004/64
Inventor 刘玉峰郑新峰房永征侯京山潘彩霞张娜赵国营张若愚
Owner SHANGHAI INST OF TECH
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