A preparation of cu 2 o Solid nanosphere approach
A nanosphere, solid technology, applied in nanotechnology, nanotechnology, nanotechnology for materials and surface science, etc., can solve the problems of difficult control, harsh synthesis conditions, long reaction time, etc. Short, uniform effect
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Embodiment 1
[0054] The method for the cuprous oxide nanosphere of preparation, concrete steps are as follows:
[0055] 1) Dissolve 0.2g of copper nitrate and 0.2g of surfactant PVP (Mw=55000) in 100mL of deionized water, then magnetically stir for 30min to fully dissolve to form a clear solution A.
[0056] 2) Dissolve 1ml of pure ammonia water in 19ml of ethylene glycol (the volume ratio of ammonia water to ethylene glycol is 1:19), and stir for 25 minutes to form a complexing agent, which is slowly added dropwise to solution A and stirred fully to form Cupro ammonia solution B.
[0057] 3) Add 0.5g of ascorbic acid as a reducing agent into 80mL of ethylene glycol, stir for 40 minutes to dissolve it completely, and add it dropwise into cuproammonia solution B, the final volume ratio of ethylene glycol containing ascorbic acid and cuproammonia solution B is 1 : 1, stirring for 30min. After centrifugation, wash twice with water, then wash twice with ethanol, and dry at 60° C. for 6 hours...
Embodiment 2
[0068] This example provides a method for preparing spherical cuprous oxide with a large specific surface area, which is similar to Example 1, except that the final volume ratio of ethylene glycol containing ascorbic acid and cuproammonia solution B is 1:1, replaced by ethylene glycol containing ascorbic acid. The final volume ratio of diol and cuproammonia solution B is 1:2. X-ray diffraction and scanning electron microscopy were performed on the prepared cuprous oxide material. The experimental results are as follows Figure 7 , Figure 8 As shown, the results show that the synthesized Cu with uniform morphology 2 O solid nanosphere particle size is 150-200nm.
[0069] The present invention has done a large number of experiments in order to verify the effect and consumption of ethylene glycol used and the copper source used are only suitable for copper nitrate, and now only exemplifies the following experimental examples for illustration. In order to compare with the prior...
experiment example 1
[0071] In this experimental example, on the basis of Example 1, the mixed solvent of ethylene glycol and ammonia water is replaced by pure ammonia water solvent (that is, the volume ratio of ammonia water and ethylene glycol is 1:0), and X-rays are carried out on the prepared cuprous oxide material. Diffraction, scanning electron microscopy, the results are as follows Figure 9 , Figure 10 As shown, the result shows that no organic solvent is added to obtain impure cuprous oxide with smooth surface and particle size of 0.5-0.8um particle agglomeration.
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