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Cu2O nanoparticles synthesis by microplasma.

Du C, Xiao M - Sci Rep (2014)

Bottom Line: Microplasma was successfully used as the cathode and copper plate was used as the anode.The results show that the morphology of Cu2O nanocrystals obtained by this technology is mainly dependent on the electrolytic media, stirring, current density and reaction temperature.For the flexibility and effectiveness of this microplasma technology, it will have broad application prospects in the realm of nanoscience, energy and environment.

View Article: PubMed Central - PubMed

Affiliation: Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, School of Environmental Science and Engineering, Sun Yat-Sen University, Guangzhou 510275, China.

ABSTRACT
A simple microplasma method was used to synthesize cuprous oxide (Cu2O) nanoparticles in NaCl-NaOH-NaNO3 electrolytic system. Microplasma was successfully used as the cathode and copper plate was used as the anode. The Cu2O products are characterized by X-ray powder diffraction (XRD), field emission scanning electron microscope (FESEM) and transmission electron microscope (TEM). The results show that the morphology of Cu2O nanocrystals obtained by this technology is mainly dependent on the electrolytic media, stirring, current density and reaction temperature. The uniform and monodisperse sphere Cu2O nanoparticles with the size about 400 ~ 600 nm can be easily obtained in H2O-ethylene glycol mix-solvent (volume ratio 1:1) and appropriate current density with stirring at room temperature. In addition, the possible mechanism has been reported in the article. And the average energy consumed in producing 1 g Cu2O nanoparticles is 180 kJ. For the flexibility and effectiveness of this microplasma technology, it will have broad application prospects in the realm of nanoscience, energy and environment.

No MeSH data available.


Related in: MedlinePlus

The FESEM (a) and TEM (b) images of the Cu2O nanoparticles prepared at current density 10 mA/cm2.(at room temperature, with stirring).
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f6: The FESEM (a) and TEM (b) images of the Cu2O nanoparticles prepared at current density 10 mA/cm2.(at room temperature, with stirring).

Mentions: In addition, the influence of current density on the growth of cuprous oxide nanoparticles by microplasma electrochemical method was also researched. Firstly, 7 mA/cm2 was chosen to run the reaction, while no sediments appeared after micro–discharge for 20 min. Then 10, 14 and 20 mA/cm2 was the next consideration value. Finally, it can be found that 20 mA/cm2 of current density was so big that the generated high energy would burn out the discharge tube. Therefore, other two values will bring out the results of current density effect on the morphology of Cu2O. The FESEM and TEM images of the Cu2O nanoparticles synthesized at current density 10 mA/cm2 were shown in Figure 6. In comparison, the average diameter of Cu2O nanoparticles prepared at 10 mA/cm2 was about 400 ~ 600 nm and it is smaller than the above mentioned case at 14 mA/cm2 (Figure 5(a) and 5(c)). Moreover, Cu2O nanoparticles prepared at 10 mA/cm2 was more uniform and regular. This mainly because the formation rate of Cu2O nanoparticles is dependent on the current density. When the current density was higher, a very large amount of particles could generate in a short time and get together soon. Hence, it's essential to choose a suitable current density.


Cu2O nanoparticles synthesis by microplasma.

Du C, Xiao M - Sci Rep (2014)

The FESEM (a) and TEM (b) images of the Cu2O nanoparticles prepared at current density 10 mA/cm2.(at room temperature, with stirring).
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4256601&req=5

f6: The FESEM (a) and TEM (b) images of the Cu2O nanoparticles prepared at current density 10 mA/cm2.(at room temperature, with stirring).
Mentions: In addition, the influence of current density on the growth of cuprous oxide nanoparticles by microplasma electrochemical method was also researched. Firstly, 7 mA/cm2 was chosen to run the reaction, while no sediments appeared after micro–discharge for 20 min. Then 10, 14 and 20 mA/cm2 was the next consideration value. Finally, it can be found that 20 mA/cm2 of current density was so big that the generated high energy would burn out the discharge tube. Therefore, other two values will bring out the results of current density effect on the morphology of Cu2O. The FESEM and TEM images of the Cu2O nanoparticles synthesized at current density 10 mA/cm2 were shown in Figure 6. In comparison, the average diameter of Cu2O nanoparticles prepared at 10 mA/cm2 was about 400 ~ 600 nm and it is smaller than the above mentioned case at 14 mA/cm2 (Figure 5(a) and 5(c)). Moreover, Cu2O nanoparticles prepared at 10 mA/cm2 was more uniform and regular. This mainly because the formation rate of Cu2O nanoparticles is dependent on the current density. When the current density was higher, a very large amount of particles could generate in a short time and get together soon. Hence, it's essential to choose a suitable current density.

Bottom Line: Microplasma was successfully used as the cathode and copper plate was used as the anode.The results show that the morphology of Cu2O nanocrystals obtained by this technology is mainly dependent on the electrolytic media, stirring, current density and reaction temperature.For the flexibility and effectiveness of this microplasma technology, it will have broad application prospects in the realm of nanoscience, energy and environment.

View Article: PubMed Central - PubMed

Affiliation: Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, School of Environmental Science and Engineering, Sun Yat-Sen University, Guangzhou 510275, China.

ABSTRACT
A simple microplasma method was used to synthesize cuprous oxide (Cu2O) nanoparticles in NaCl-NaOH-NaNO3 electrolytic system. Microplasma was successfully used as the cathode and copper plate was used as the anode. The Cu2O products are characterized by X-ray powder diffraction (XRD), field emission scanning electron microscope (FESEM) and transmission electron microscope (TEM). The results show that the morphology of Cu2O nanocrystals obtained by this technology is mainly dependent on the electrolytic media, stirring, current density and reaction temperature. The uniform and monodisperse sphere Cu2O nanoparticles with the size about 400 ~ 600 nm can be easily obtained in H2O-ethylene glycol mix-solvent (volume ratio 1:1) and appropriate current density with stirring at room temperature. In addition, the possible mechanism has been reported in the article. And the average energy consumed in producing 1 g Cu2O nanoparticles is 180 kJ. For the flexibility and effectiveness of this microplasma technology, it will have broad application prospects in the realm of nanoscience, energy and environment.

No MeSH data available.


Related in: MedlinePlus