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Simple preparation method of Cu2O micropowder

A micro-powder, simple technology, applied in the direction of copper oxide/copper hydroxide, etc., can solve the problems of high price, production pollution, high toxicity, etc., and achieve the effect of low cost, large product volume and simple operation

Inactive Publication Date: 2019-07-02
HEFEI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, some toxic and expensive reducing agents such as hydrazine hydrate, bisulfite and sodium borohydride are often used in many liquid-phase synthesis processes, resulting in environmental pollution and high production costs.

Method used

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  • Simple preparation method of Cu2O micropowder
  • Simple preparation method of Cu2O micropowder
  • Simple preparation method of Cu2O micropowder

Examples

Experimental program
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Effect test

preparation example Construction

[0016] a Cu 2 The simple and easy preparation method of O micropowder comprises the following steps:

[0017] (1) CuCl 2 2H 2 Add O and lactose to deionized water to make a solution, and then add NaOH solid to the above solution to obtain an alkaline reaction precursor;

[0018] (2) Put the prepared precursor solution above at room temperature for oxidation-reduction reaction to obtain Cu 2 O micropowder.

[0019] Lactose and CuCl described in step (1) 2 2H 2 The mass ratio of O is 2:1.

[0020] The quality of NaOH described in step (1) is 0.1-0.7g.

[0021] The volume of the reaction precursor solution described in step (1) is 120ml.

[0022] The reaction temperature of the oxidation-reduction reaction in step (2) is 25°C, and the reaction time is 3-12h.

Embodiment 1

[0024] a Cu 2 The simple and easy preparation method of O micropowder comprises the following steps:

[0025] (1) 1.7gCuCl 2 2H 2 O and 3.4g of lactose are added into 120ml of deionized water to form a solution, and the prepared solution is divided into four equal parts, and 0.1g, 0.3g, 0.5g and 0.7g of NaOH solid are added respectively to four parts of the solution to obtain four parts of alkaline Reaction precursor;

[0026] (2) Put the prepared precursor solution above at room temperature for oxidation-reduction reaction to obtain Cu 2 O micropowder.

[0027] After preliminary analysis of the product generated by the reaction with SEM and XRD, it can be seen that with the increase of the amount of NaOH, the product Cu 2 O powder particles gradually transform from random particles to quasi-cubes, with a size of about 1.5um (such as figure 1 a~ figure 1 shown in c). The XRD spectrum of the product is as figure 1 As shown, by combining with bulk Cu 2 After comparing ...

Embodiment 2

[0030] a Cu 2 The simple and easy preparation method of O micropowder comprises the following steps:

[0031] (1) CuCl 2 2H 2 Add O and lactose to deionized water to make a solution, and then add NaOH solid to the above solution to obtain an alkaline reaction precursor;

[0032] (2) Put the prepared precursor solution above at room temperature for oxidation-reduction reaction to obtain Cu 2 O micropowder.

[0033] When lactose is not added to the reaction system, there is no Cu in the reaction system 2 The O product appeared, and with the increase of the amount of lactose, a brick-red precipitate gradually appeared in the reaction system. Depend on figure 2 a~ figure 2 c It can be seen that with the increase of the amount of lactose (0.1g, 0.3g, 0.5g), the generated Cu 2 The morphology of O powder gradually changed from regular spherical particles to irregular particles, and its size gradually decreased.

[0034] Based on the above experimental results, it can be co...

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Abstract

The invention discloses a simple preparation method of Cu2O micropowder. The simple preparation method of Cu2O micropowder comprises following steps: 1, CuCl2.2H2O and lactose are added into deionizedwater to prepare a solution, NaOH solid is added into the solution so as to obtain an alkali reaction precursor solution; 2, the alkali reaction precursor solution is subjected to oxidation-reductionreaction at normal temperature so as to obtain the Cu2O micropowder. Compared with the prior art, the beneficial effects are that: CuCl2.2H2O is taken as a copper source, lactose is taken as a reductive agent, oxidation-reduction reaction is carried out in an alkali system so as to obtain the Cu2O micropowder of a plurality of morphologys, control preparation of Cu2O micropowder from lactose andNaOH is realized, a novel method is provided for large scale preparation of cheap Cu2O. No special experiment instrument or equipment is needed; operation is simple; cost is low; and product amount islarge.

Description

technical field [0001] The invention relates to the technical field of powder preparation, in particular to a Cu 2 Simple preparation method of O micropowder. Background technique [0002] Cuprous oxide (Cu 2 O) is a p-type semiconductor with a bandgap of about 2.2eV, which has excellent optical properties and is widely used in the photocatalytic degradation of organic pollutants and the preparation of optical devices. Currently preparing Cu 2 O methods mainly include liquid phase method, solid phase method and electrolytic method. Among them, the liquid phase method is widely used because of the low investment in equipment and the controllable shape and particle size of the product. However, some toxic and expensive reducing agents such as hydrazine hydrate, bisulfite and sodium borohydride are often used in many liquid phase synthesis processes, resulting in environmental pollution and high production costs. In view of this, the present invention uses lactose as a gre...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G3/02
CPCC01G3/02
Inventor 韩成良杨昌林赵勋龙黄俊俊沈寿国
Owner HEFEI UNIV
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