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Preparation method of hexacosahedron Cu2O mesoscopic crystal powder

A technology of icosahedral and mesoscopic crystals, applied in the direction of copper oxide/copper hydroxide, etc., can solve the problems of inability to synthesize hexadecahedron, low product purity, complicated operation, etc., and achieve uniform size and operation. Simple and easy to operate

Active Publication Date: 2019-05-03
XIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] For overcoming the above-mentioned deficiencies in the prior art, the object of the invention is to provide a kind of hexahedron Cu 2 The preparation method of O mesoscopic crystal powder solves the problem of existing Cu 2 The use of surfactants in the preparation of O mesoscopic crystals leads to low product purity, poor performance, complicated operation, high cost, and the inability to synthesize hexahedral Cu. 2 The technical problem of O mesoscopic crystal has the characteristics of no surfactant, high product purity, simple operation and low cost

Method used

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  • Preparation method of hexacosahedron Cu2O mesoscopic crystal powder
  • Preparation method of hexacosahedron Cu2O mesoscopic crystal powder
  • Preparation method of hexacosahedron Cu2O mesoscopic crystal powder

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Embodiment 1

[0038] In this embodiment, a hexahedron Cu 2 The liquid phase preparation method of O mesoscopic crystal powder, comprises the steps:

[0039] Step 1, prepare the mixed solution (metal salt solution) of divalent copper salt and divalent manganese salt, at first, get 0.017g cupric chloride powder and 50mL deionized water and mix and be mixed with solution; Then, 0.0123g manganese acetate powder will into the above-mentioned copper salt and make it into a clear and transparent solution by magnetic stirring, which is recorded as solution A; in solution A, Cu 2+ The molar concentration is 0.002mol / L, Mn 2+ with Cu 2+ The molar ratio is 1:1;

[0040] Step 2, prepare NaOH solution: 0.8g NaOH solution and 50mL water are prepared into a solution, which is recorded as solution B; OH - with Cu in solution A in step 1 2+ The molar ratio of 8:1; OH - The molar concentration is 0.4mol / L;

[0041] Step 3, prepare sodium ascorbate solution: 0.9905g sodium ascorbate and 50mL water are ...

Embodiment 2

[0047] In this embodiment, a hexahedron Cu 2 The liquid phase preparation method of O mesoscopic crystal powder, comprises the steps:

[0048] Step 1, prepare the mixed solution (metal salt solution) of divalent copper salt and divalent manganese salt, first, get 0.17g cupric chloride powder and 50mL deionized water and mix and prepare solution; Then, 0.212g manganese chloride powder Put it into the above copper salt and make it into a clear and transparent solution by magnetic stirring, which is recorded as solution A; in solution A, Cu 2+ The molar concentration is 0.02mol / L, Mn 2+ with Cu 2+ The molar ratio is 2: 1;

[0049] Step 2, preparing NaOH solution, 0.2g of NaOH solution and 50mL water are prepared into a solution, which is referred to as solution B; OH - with Cu in solution A in step 1 2+ The molar ratio of 0.2:1; OH - The molar concentration is 0.1mol / L;

[0050] Step 3, prepare sodium ascorbate solution, 0.9905g sodium ascorbate and 50mL water are mixed in...

Embodiment 3

[0056] In this embodiment, a hexahedron Cu 2 The liquid phase preparation method of O mesoscopic crystal powder, comprises the steps:

[0057] Step 1, prepare the mixed solution (metal salt solution) of divalent copper salt and divalent manganese salt, at first, get 0.05g copper sulfate powder and 50mL deionized water and mix and be mixed with solution; Then, 0.216g manganese acetate powder is put into into the above-mentioned copper salt and make it into a clear and transparent solution by magnetic stirring, which is referred to as solution A; in solution A, Cu 2+ The molar concentration is 0.004mol / L, Mn 2 + with Cu 2+ The molar ratio is 3: 1;

[0058] Step 2, prepare KOH solution, 2g of KOH solution and 10mL water are prepared into a solution, which is recorded as solution B; OH - with Cu in solution A in step 1 2+ The molar ratio of 20:1; OH - The molar concentration is 1 mol / L;

[0059] Step 3, prepare sodium ascorbate solution, 8.6889g sodium ascorbate and 50mL w...

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Abstract

A preparation method of hexacosahedron Cu2O mesoscopic crystal powder includes steps of: 1) preparing a mixed solution of bivalent copper salt and bivalent manganese salt; 2) preparing an alkali watersolution; 3) preparing a sodium ascorbate water solution; 4) preparing a Cu(OH)2 precursor; 5) carrying out a reduction reaction; 6) performing post-treatment. According to the method, at room temperature, the type of the copper salt, manganese salt and alkali, the concentration of reactant, and reaction time are regulated, thereby preparing the hexacosahedron Cu2O mesoscopic crystal which has great monodispersibility, uniform size and regular shape. The method is free of any surfactant, is low in cost, is good in operability and is simple. The surface of the hexacosahedron Cu2O mesoscopic crystal has a rough structure formed by stacking a large number of zero-dimensional nano-particle structure units, wherein naked crystal surfaces include twelve (100) crystal faces, 8 (111) crystal faces and 6 (100) crystal faces, so that the product has excellent photocatalytic performance.

Description

technical field [0001] The invention relates to the technical field of preparation of nanomaterials, in particular to a hexahedron Cu 2 O Preparation method of mesoscopic crystal powder. Background technique [0002] Mesoscopic crystal (mesocrystal) is a kind of crystalline superstructure composed of ordered arrangement of nanostructure units whose crystallographic orientation basically tends to be consistent. Its selected area electron diffraction pattern usually shows the characteristics of single crystal or similar to single crystal. This quasi-single crystal state makes it more conducive to the transport and separation of carriers than polycrystalline nanomaterials. At the same time, mesoscopic crystals are characterized by rough surfaces or internal voids, which are beneficial to increase the specific surface area and make them have more active sites than the smooth surface of single-crystal nanomaterials. Therefore, mesoscopic crystals exhibit better physical and che...

Claims

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Application Information

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IPC IPC(8): C01G3/02
Inventor 孙少东梁淑华苟旭丰杨卿崔杰
Owner XIAN UNIV OF TECH
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