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Preparation method of cuprous sulfide nano-flowers containing copper defects

A technology of cuprous sulfide and nanoflowers, applied in the field of nanomaterials, can solve the problems of difficult control of product size or shape, harsh reaction conditions, complicated preparation process, etc., and achieve the effects of low production cost, low synthesis temperature and simple operation

Active Publication Date: 2019-08-16
KUNMING UNIV OF SCI & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

These methods have disadvantages to a certain extent, such as difficult to control the size or shape of the product, low yield, harsh reaction conditions or complicated preparation process and relatively high cost.

Method used

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  • Preparation method of cuprous sulfide nano-flowers containing copper defects
  • Preparation method of cuprous sulfide nano-flowers containing copper defects
  • Preparation method of cuprous sulfide nano-flowers containing copper defects

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Embodiment 1: A kind of preparation method of cuprous sulfide nanoflower containing copper defect, concrete steps are as follows:

[0030] Strong base (composite base of potassium hydroxide and sodium hydroxide), surfactant (trimethylhexadecyl ammonium bromide CTAB), simple copper (copper sheet), hydrazine hydrate, sodium sulfide nonahydrate and deionized Mix the water evenly and seal it in a polytetrafluoroethylene container. Place the polytetrafluoroethylene container in a heating device and heat it at a constant speed to a temperature of 200°C and react at a constant temperature for 24 hours. After cooling to room temperature, centrifuge and remove the supernatant. Wash with absolute ethanol and deionized water until the washing solution is neutral, and dry at a temperature of 30°C to obtain cuprous sulfide nanoflowers; wherein the mass ratio of potassium hydroxide to sodium hydroxide is 5.65:4.35, and strong alkali (composite base of potassium hydroxide and sodium h...

Embodiment 2

[0033] Embodiment 2: A kind of preparation method of cuprous sulfide nanoflower containing copper defect, concrete steps are as follows:

[0034] Strong base (composite base of potassium hydroxide and sodium hydroxide), surfactant (trimethylhexadecyl ammonium bromide CTAB), simple copper (copper sheet), hydrazine hydrate, sodium sulfide nonahydrate and deionized Mix the water evenly and seal it in a polytetrafluoroethylene container. Place the polytetrafluoroethylene container in a heating device and heat it at a constant speed to a temperature of 200°C and react at a constant temperature for 24 hours. After cooling to room temperature, centrifuge and remove the supernatant. Wash with absolute ethanol and deionized water until the washing solution is neutral, and dry at a temperature of 40°C to obtain cuprous sulfide nanoflowers; wherein the mass ratio of potassium hydroxide to sodium hydroxide is 5.65:4.35, and strong alkali (composite base of potassium hydroxide and sodium h...

Embodiment 3

[0036] Embodiment 3: A kind of preparation method of cuprous sulfide nanoflower containing copper defect, concrete steps are as follows:

[0037] Strong base (composite base of potassium hydroxide and sodium hydroxide), surfactant (trimethylhexadecyl ammonium bromide CTAB), simple copper (copper sheet), hydrazine hydrate, sodium sulfide nonahydrate and deionized Mix the water evenly and seal it in a polytetrafluoroethylene container. Place the polytetrafluoroethylene container in a heating device and heat it at a constant speed to a temperature of 200°C and react at a constant temperature for 24 hours. After cooling to room temperature, centrifuge and remove the supernatant. Wash with absolute ethanol and deionized water until the washing solution is neutral, and dry at a temperature of 50°C to obtain cuprous sulfide nanoflowers; wherein the mass ratio of potassium hydroxide to sodium hydroxide is 2:1, and strong alkali (composite base of potassium hydroxide and sodium hydroxi...

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Abstract

The invention relates to a preparation method of cuprous sulfide nanoflowers containing copper defects, and belongs to the technical field of nano materials. The method comprises the following steps:uniformly mixing strong alkali, a surfactant, elemental copper, hydrazine hydrate, sodium sulfide and water, heating the mixture to 180-220 DEG C at a constant speed under a sealed condition, and carrying out a constant-temperature reaction for 22-24 hours to obtain a reaction system; cooling the reaction system to room temperature, carrying out centrifugal separation to remove supernatant, washing the reaction system with deionized water until the washing liquid is neutral, and finally drying the reaction product to obtain the cuprous sulfide nanoflower. The method is mild in reaction condition, high in yield, relatively uniform in product morphology and good in repeatability. The cuprous sulfide nanoflowers have an average particle diameter of 700-1900 nm, and the nanosheets constitutingthe nanoflowers have an average particle diameter of about 400 nm. The cuprous sulfide nanoflower has a hierarchical structure and contains copper defects, and can be applied to the fields of photocatalysts, solar cells, electrochemical energy storage devices, sensors and the like.

Description

technical field [0001] The invention relates to a method for preparing cuprous sulfide nanoflowers containing copper defects, belonging to the technical field of nanomaterials. Background technique [0002] Cuprous sulfide is cheap, is an important transition metal sulfide, and is also a multifunctional semiconductor material with good chemical stability. Nano-cuprous sulfide materials have small particle size and large specific surface area, and due to quantum size effects, surface effects and macroscopic quantum tunneling effects, they have optical, electrical and electrochemical properties that cannot be compared with bulk materials. Therefore, cuprous sulfide nanomaterials are It is widely used in photocatalysts, solar cells, electrochemical energy storage devices and sensors, and has received extensive attention and research. There are many preparation methods of cuprous sulfide nanomaterials, such as chemical precipitation method, microwave radiation method, vapor dep...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G3/12
CPCC01G3/12C01P2004/61C01P2004/62C01P2004/30
Inventor 王明均张朝良谭亮李晓燕龚伟志罗亮余荣芬
Owner KUNMING UNIV OF SCI & TECH
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