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Method for preparing cuprous sulfide powder

A cuprous sulfide and copper sulfide technology, applied in copper sulfide and other directions, can solve the problems of low purity of cuprous sulfide powder, complex preparation process, no specific morphology, etc., and achieve rich and cheap raw materials, simple preparation process and low cost. Effect

Inactive Publication Date: 2020-02-14
SHANGHAI BOHAN NEW MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the obtained cuprous sulfide powder contains unreacted copper powder or copper oxide, which leads to low purity of cuprous sulfide powder, and has the disadvantages of no specific shape, coarse particle size, wide distribution and poor stability. In addition, the process is complicated, Involving toxic gas hydrogen sulfide or sulfur vapor, the preparation process is complex

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] A preparation method of cuprous sulfide powder, comprising the following steps:

[0017] Step (1). Preparation of Cu(Ac) 2 and Na 2 S water or alcohol solution, adjust Cu(Ac) 2 The pH of water or alcohol solution=4, at room temperature Cu(Ac) 2 Add water or alcohol solution drop by drop to Na 2 In S water or alcohol solution, stir at the same time, continue to stir for 20 minutes after the dropwise addition is completed: filter the precipitate after the reaction, vacuum dry and grind to obtain copper sulfide powder after filtration;

[0018] Step (2). The copper sulfide powder obtained in step (1) is placed in a corundum crucible for compaction, and is smelted under the conditions of analyzing pure sodium silicate smelting protective layer and nitrogen atmosphere; smelting includes two stages: the first stage consists of The room temperature is raised to 850°C, and the temperature is kept at 850°C for 30 minutes, so that the sodium silicate completely becomes a melt...

Embodiment 2

[0021] A preparation method of cuprous sulfide powder, comprising the following steps:

[0022] Step (1). Preparation of Cu(Ac) 2 and Na 2 S water or alcohol solution, adjust Cu(Ac) 2 The pH of water or alcohol solution=5, at room temperature Cu(Ac) 2 Add water or alcohol solution drop by drop to Na 2 In S water or alcohol solution, stir at the same time, continue to stir for 20 minutes after the dropwise addition is completed: filter the precipitate after the reaction, vacuum dry and grind to obtain copper sulfide powder after filtration;

[0023] Step (2). The copper sulfide powder obtained in step (1) is placed in a corundum crucible for compaction, and is smelted under the conditions of analyzing pure sodium silicate smelting protective layer and nitrogen atmosphere; smelting includes two stages: the first stage consists of The room temperature is raised to 850°C, and the temperature is kept at 850°C for 30 minutes, so that the sodium silicate completely becomes a melt...

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PUM

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Abstract

The invention provides a method for preparing cuprous sulfide powder. The method comprises the following steps: (1) preparing aqueous or alcoholic solutions of Cu(Ac)2 and Na2S, adjusting a pH of theaqueous or alcoholic solution of Cu(Ac)2 to 4 to 5, dropwise adding the aqueous or alcoholic solution of Cu(Ac)2 into the aqueous or alcoholic solution of Na2S at room temperature with stirring, and continuing to carry out stirring for 20min after dropwise adding is completed; and carrying out filtering and precipitating after a reaction ends up, carrying out filtering, and then, carrying out vacuum drying and grinding, so as to obtain cupric sulfide powder; (2) smelting the cupric sulfide powder obtained in the step (1) under the conditions of an analytically-pure sodium silicate smelting protective layer and a nitrogen gas atmosphere; and (3) after a smelting ending temperature is lowered to room temperature, subjecting cuprous sulfide obtained in the step (2) to crushing and ball-milling, so as to obtain cuprous sulfide powder with uniform particle size; and then, washing an obtained solid material with deionized water to remove water-soluble impurities from the obtained solid material, and finally, carrying out vacuum drying, thereby obtaining cuprous sulfide nano-powder. According to the method, the raw materials are rich and cheap, the cost is low, the preparation process issimple, the conditions are moderate, the controllability is good, the production efficiency is high, and thus, the method facilitates industrialization and is pollution-free.

Description

technical field [0001] The invention relates to a method for preparing powder, in particular to a method for preparing cuprous sulfide powder. Background technique [0002] Cuprous sulfide (Cu 2 S) As a new type of semiconductor material, it has excellent photoelectric properties, nonlinear optical properties and photocatalytic properties. At present, it has been applied in the fields of solar cells, seawater batteries and photocatalysis, showing excellent photoelectric performance and photocatalytic effect. Due to its special nonlinear optical properties, it also has great application potential in the fields of laser generators, infrared detectors and light sensors. [0003] Ultrafine spherical powder is widely used in many high-tech fields due to its large specific surface area, high surface activity, fast chemical reaction speed, good solubility, excellent sintering performance and unique electrical, magnetic and optical properties. [0004] Cuprous sulfide powder is g...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G3/12
CPCC01G3/12
Inventor 孙安红
Owner SHANGHAI BOHAN NEW MATERIAL TECH CO LTD