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Preparation method for nanometer cuprous oxide particle, and morphology and particle size controlling method

A technology of nano-cuprous oxide and particles, applied in the direction of copper oxide/copper hydroxide, nanotechnology, nanotechnology, etc., can solve the problems of complex preparation conditions, high production cost, and difficult control of the synthesis process, and achieve simplified preparation process, Good dispersion and uniform particle size

Active Publication Date: 2016-06-01
NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, these methods require the addition of surfactants or modifiers to obtain nano-cuprous oxide particles with controllable morphology and particle size to a certain extent. The preparation conditions are more complicated, the synthesis process is not easy to control, and further purification is required to remove surface Chemical residues, high production costs

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  • Preparation method for nanometer cuprous oxide particle, and morphology and particle size controlling method
  • Preparation method for nanometer cuprous oxide particle, and morphology and particle size controlling method
  • Preparation method for nanometer cuprous oxide particle, and morphology and particle size controlling method

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Embodiment 1-1

[0041] In the present embodiment, the preparation method of nano cuprous oxide particles is as follows:

[0042] (1) 5.0 g of copper sulfate pentahydrate was formulated into 100 mL of solution, stirred at room temperature to fully dissolve the copper salt, and a solution of copper sulfate pentahydrate with a copper ion concentration of 0.2 mol / L was prepared.

[0043] (2) 3.2 g of sodium hydroxide was formulated into 100 mL of solution, stirred at room temperature to fully dissolve sodium hydroxide in water, and a sodium hydroxide alkaline solution with a concentration of 0.8 mol / L was prepared.

[0044] (3) 7.2 g of anhydrous glucose was formulated into 100 mL solution, stirred at room temperature to fully dissolve the glucose, and a glucose solution with a concentration of 0.4 mol / L was prepared.

[0045] (4) At room temperature, in 100mL0.2mol / L copper sulfate pentahydrate solution, add dropwise the sodium hydroxide solution that 100mL step (2) makes, and keep stirring, the...

Embodiment 1-2

[0049] In this example, the preparation method of nano-cuprous oxide particles is basically the same as that of Example 1-1, the difference is that in step (4), the dropping rate of reducing agent anhydrous glucose is controlled to 0.08mol / h, i.e. 30min The dropwise addition is complete.

[0050] The X-ray spectrogram of above-mentioned obtained particle is as Figure 10 As shown in curve 2, the particles are nano-cuprous oxide particles.

[0051] The scanning electron micrograph of the nano cuprous oxide particle that above-mentioned makes is as follows figure 2 ,Depend on figure 2 It can be seen that the nano-cuprous oxide particles are in the cubic crystal form, the average side length of the particles is 600 nm, and the particle size distribution is uniform.

Embodiment 1-3

[0053] In this example, the preparation method of nano-cuprous oxide particles is basically the same as that of Example 1-1, the difference is that in step (4), the dropping rate of reducing agent anhydrous glucose is controlled to 0.02mol / h, 120min drops Finished adding.

[0054] The X-ray spectrogram of above-mentioned obtained particle is as Figure 10 As shown in curve 3, the particles are nano-cuprous oxide particles.

[0055] The scanning electron micrograph of the nano cuprous oxide particle that above-mentioned makes is as follows image 3 ,Depend on image 3 It can be seen that an amorphous state is formed because the addition rate of the reducing agent is too slow.

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Abstract

The invention provides a preparation method for a nanometer cuprous oxide particle. The method only uses a copper salt, a strong base and a reducing agent as raw materials and prepares the nanometer cuprous oxide particle by successively adding a strong base solution and a reducing agent solution into a copper salt solution; the mol ratio of copper ions to hydroxide ions to the reducing agent is controlled to be 1: (2-10): (0.5-10); the addition rate of the hydroxide ions is 0.04 mol / h to 0.8 mol / h; the addition rate of the reducing agent is 0.05 mol / h to 0.8 mol / h; nanometer cuprous oxide with uniform particle size and regular morphology can be obtained; and cost is reduced, and preparation technology is simplified. Moreover, the morphology and particle size of nanometer cuprous oxide are effectively controlled by controlling the addition rates of the strong base and the reducing agent, reaction temperature and reaction time after addition of the strong base and the reducing agent, and standing time after completion of a reduction reaction; the particle size controlling range of nanometer cuprous oxide is 300 to 1000 nm; and with morphology controlling, nanometer cuprous oxide may be in the shape of a cube, sphere, octahedron, etc.

Description

technical field [0001] The invention belongs to the technical field of cuprous oxide, and in particular relates to a method for preparing nanometer cuprous oxide particles and a method for regulating its appearance and particle size. Background technique [0002] Cuprous oxide is a p-type semiconductor material with a band gap of 2.1eV. Due to the quantum size effect, nano-cuprous oxide exhibits peculiar optical and electrical properties. In addition, nano-cuprous oxide, as a new type of p-type oxide semiconductor material that can be excited by visible light, has an active electron-hole pair system and exhibits good catalytic activity and low-temperature paramagnetism. Therefore, cuprous oxide nanoparticles have very good and important applications in the fields of organic synthesis, photoelectric conversion, new energy and marine antifouling. [0003] At present, domestic and foreign literatures have reported many methods for controlling the morphology and particle size ...

Claims

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Application Information

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IPC IPC(8): C01G3/02B82Y30/00
Inventor 赵文杰王佳兴李赫曹慧军乌学东曾志翔薛群基
Owner NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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