Preparation method of graded spherical cuprous oxide hollow nano particle

A cuprous oxide and hollow nano technology is applied in the field of preparation of graded spherical cuprous oxide hollow nanoparticles, which can solve the problems of unsuitability for large-scale production, small preparation amount, low solubility and the like, and achieves short reaction time, simple operation, mild response

Inactive Publication Date: 2013-12-25
HENAN NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Liu Yifan et al. prepared cuprous oxide sol by reducing copper acetate with hydrazine hydrate and hydroxylamine hydrochloride. Sodium (potassium) tartrate or glycerin should be added to the system (Acta Physicochemical Sinica, 1993, 9(1):107-110), and copper acetate The solubility in water itself is small, and a large amount of water needs to be added to dissolve copper acetate, so the preparation amount is small, and it is not suitable for large-scale production

Method used

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  • Preparation method of graded spherical cuprous oxide hollow nano particle
  • Preparation method of graded spherical cuprous oxide hollow nano particle
  • Preparation method of graded spherical cuprous oxide hollow nano particle

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0023] Take 0.1mol / LCuCl 2 Add 100ml of aqueous solution into the reaction flask, add dropwise 20ml of mixed aqueous solution containing 0.005mol hydrazine hydrate and 0.01molNaOAc at 5°C and a stirring speed of 250-500r / min, and control the dropping time at 10-15min; Stir for 10 min, centrifuge, wash with water, place it in a vacuum drying oven, and dry at 40°C to obtain red hierarchical spherical cuprous oxide hollow nanoparticles.

Embodiment 2

[0025] Take 0.5mol / LCuCl 2 Add 20ml of aqueous solution into the reaction flask, add 20ml of mixed aqueous solution containing 0.01mol hydrazine hydrate and 0.01mol NaOAc dropwise at 15°C and a stirring speed of 500-1000r / min, and control the dropping time at 10-15min; after adding, continue Stir for 10 min, centrifuge, wash with water, place it in a vacuum drying oven, and dry at 50° C. to obtain red hierarchical spherical cuprous oxide hollow nanoparticles. figure 1 The XRD spectrum of the prepared hierarchical spherical cuprous oxide hollow nanoparticles is shown. By comparing with the standard spectrum, it can be seen that the prepared product is cuprous oxide. figure 2 The SEM spectrum of the prepared hierarchical spherical cuprous oxide hollow nanoparticles is shown, and the spherical structure of cuprous oxide can be seen from the accompanying drawings, image 3 The TEM spectrum of the prepared hierarchical spherical cuprous oxide hollow nanoparticles is shown. It can...

Embodiment 3

[0027] Take 1mol / LCuCl 2 Add 10ml of aqueous solution into the reaction flask, add dropwise 20ml of mixed aqueous solution containing 0.02mol hydrazine hydrate and 0.01molNaOAc at 25°C and a stirring speed of 1000-1500r / min, and control the dropping time at 15-20min; Stir for 20 minutes, centrifuge, wash with water, place it in a vacuum drying oven, and dry at 60°C to obtain red hierarchical spherical cuprous oxide hollow nanoparticles. Figure 4 The TEM spectrum of the prepared hierarchical spherical cuprous oxide hollow nanoparticles is shown, and it can be seen from the accompanying drawings that the cuprous oxide has a hierarchical structure.

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Abstract

The invention discloses a preparation method of a graded spherical cuprous oxide hollow nano particle. The preparation method of the graded spherical cuprous oxide hollow nano particle is characterized by comprising the following steps of: (1) dissolving copper salt in water, (2) dropwise adding a mixed aqueous solution of hydrazine hydrate and acetate at 5-40 DEG C under a stirring condition, and (3) after dropwise adding, continuing stirring for 10-30min at 5-40 DEG C, centrifuging, washing with water, performing vacuum drying, and obtaining the graded spherical cuprous oxide hollow nano particle, wherein a molar concentration of Cu<2+> is 0.1-4mol / L, and a molar ratio of acetate (CH3COO<->) to hydrazine hydrate (N2H4) to copper salt (Cu<2+>) is (1-3):(0.5-4):1. According to the method, a reaction system is simple, raw materials are cheap and easy to obtain, and the method produces no hazardous waste, meets a green production concept, is simple in process route, easy and simple to operate, mild in reaction condition, short in reaction time and high in efficiency, and is suitable for mass production.

Description

technical field [0001] The invention relates to a preparation method of nanometer cuprous oxide, in particular to a preparation method of hierarchical spherical cuprous oxide hollow nanoparticles. Background technique [0002] Cuprous oxide is an oxide of monovalent copper, red or dark red octahedral cubic crystal crystalline powder. Cuprous oxide in nature can exist in reddish-brown hematite. Cuprous oxide can be used as a catalyst in organic synthesis, and is also widely used in the fields of pigments, coatings, antibacterial agents, and electronic products. Due to the size effect, nano-scale cuprous oxide has special optical and electrical properties, and has a wide range of application values ​​in superconductors, solar cells, catalysts, sensors, etc. Nano-cuprous oxide also has potential application prospects in the photocatalytic degradation of organic pollutants, which has attracted strong attention from environmental researchers. Nano-cuprous oxide will have a wid...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G3/02B82Y30/00B82Y40/00
Inventor 丁清杰孔端阳姜玉钦赵靓琳张玮玮齐庆华王栋吴斗灿徐桂清李伟
Owner HENAN NORMAL UNIV
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