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Method for synthesizing Nano balls of cuprous oxide, and application of Nano balls of cuprous oxide

A technology of cuprous oxide and nanospheres, applied in the application field of synthesizing cuprous oxide nanospheres and cuprous oxide nanospheres, can solve the problems of high reaction temperature, unfavorable large-scale production, long reaction time, etc., and achieves wide application prospects Effect

Inactive Publication Date: 2006-04-19
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although cuprous oxide microspheres have been reported abroad, the reaction temperature is high and the reaction time is long, which is not conducive to large-scale production
However, the low-temperature synthesis of monodisperse (uniform size and shape) cuprous oxide nanospheres has not been reported at home and abroad.

Method used

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  • Method for synthesizing Nano balls of cuprous oxide, and application of Nano balls of cuprous oxide
  • Method for synthesizing Nano balls of cuprous oxide, and application of Nano balls of cuprous oxide
  • Method for synthesizing Nano balls of cuprous oxide, and application of Nano balls of cuprous oxide

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Get 0.4g analysis pure copper acetate (Cu(CH 3 COO) 2 .H 2 O) be placed in the three-necked flask of 100ml, add 30ml N, N dimethylformamide dissolves, add 0.165gPVP (molecular weight 30000), stir and dissolve, add 0.04g sodium borohydride again, utilize oil bath or water bath to heat to After 2 minutes at 80°C, the color changed to orange-red, and the orange powder was obtained by centrifugation. The product is identified as cubic phase cuprous oxide by X-ray powder diffraction, such as figure 1 As shown; SEM, TEM electron microscope inspection product morphology: nanospheres with a size of ~200 nanometers, electron diffraction of a single ball proves that the product has a tendency to become a single crystal, such as figure 2 , 3 shown. The obtained cuprous oxide is dispersed in ethanol to form an orange sol, which is dropped on a silicon wafer or conductive glass to form a self-assembled form in a close-packed form, such as Figure 4 shown. Put the obtained cu...

Embodiment 2

[0034] Embodiment two: get 0.1g analysis pure copper acetate (Cu(CH 3 COO) 2 .H 2 O) Place in a 100ml three-necked flask, add 20ml N, N dimethylformamide to dissolve, add 0.055g PVP (molecular weight 1300000), stir to dissolve, then add 0.14g potassium borohydride, then heat to 90°C in an oil bath or water bath ℃, after 4 minutes, the color changed to orange-red, and the orange powder was obtained by centrifugation. The product was identified as cubic cuprous oxide by X-ray powder diffraction; SEM and TEM electron microscopes detected the product appearance: nanospheres with a size of ~250 nanometers, and the electron diffraction of a single ball was the same as in Example 1. Put the obtained cuprous oxide powder in a porcelain boat, then put it in a muffle furnace, and heat it at a rate of 500°C / hour to 300°C in an air atmosphere for 2 hours to obtain copper oxide nanospheres; X-ray powder diffraction identified it as monoclinic copper oxide; scanning electron microscopy s...

Embodiment 3

[0035] Embodiment three: get 0.24g analysis pure copper nitrate (Cu(NO 3 ) 2.3H 2 O) Place in a 100ml three-necked flask, add 20ml of absolute ethanol to dissolve, add 0.111g of PVP (molecular weight 30000), stir to dissolve, add 0.01g of potassium borohydride, then heat to 70°C in an oil bath or water bath for 5 minutes After that, the color changed to orange-red, and the orange powder was obtained by centrifugation. The product was identified as cubic phase cuprous oxide by X-ray powder diffraction; SEM and TEM electron microscopes detected the product appearance: hollow nanospheres with a size of ~250 nanometers. Put the obtained cuprous oxide powder in a porcelain boat, then put it in a muffle furnace, and heat it at a rate of 500°C / hour to 400°C in an air atmosphere for 2 hours to obtain copper oxide nanospheres; X-ray powder diffraction identified it as monoclinic copper oxide; scanning electron microscopy showed that the size of the nanospheres did not change substan...

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Abstract

A process for synthesizing the cuprous oxide nanoballs includes such steps as dissolving the Cu salt in water-soluble organic solvent, sequentially adding non-ionic surfactant and strong reducer, and reflux at 70-90 deg.C in an open system to obtain quasi-single-dispersed cuprous oxide nanoballs. Said cuprous oxide can be self-assembled on silicon chip or electrically conductive glass to form 2D or 3D structure for meeting the requirement of solar cell or microelectronic device.

Description

Technical field: [0001] The invention relates to the technical field of shape control of P-type semiconductor oxides and methods for forming composite core-shell structures with other N-type semiconductors in the shape-controlled synthesis of inorganic functional materials. Background technique: [0002] Cuprous oxide and copper oxide are good P-type semiconductors, which can be used in solar energy conversion, microelectronics, magnetic storage, catalysis, gas sensing and other fields. After the size reaches the nanoscale, because of its large specific surface area and excellent surface physical and chemical properties, it has many potential applications in solar cells, microelectronic devices, gas catalysis, and gas sensors. [0003] So far, domestic and foreign research reports mainly focus on the control of its nano-morphology. There have been related research reports or patents on the morphology of cuprous oxide nanowires, nanowhiskers, and nanocubes. For example, the...

Claims

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Application Information

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IPC IPC(8): B22F9/24
Inventor 李亚栋张加涛
Owner TSINGHUA UNIV
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