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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 and TEM images of the Cu2O nanoparticles prepared with stirring ((a) and (c), respectively) and without stirring ((b) and (d), respectively).(14 mA/cm2 of current density, at room temperature).
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f5: The FESEM and TEM images of the Cu2O nanoparticles prepared with stirring ((a) and (c), respectively) and without stirring ((b) and (d), respectively).(14 mA/cm2 of current density, at room temperature).

Mentions: With H2O–ethylene glycol as the electrolyte, the next work is to research the effects of stirring on the morphology of Cu2O prepared by microplasma technology. It can be found that using stirrer will not lead to the instability of microdischarge. Then the stirrer was used to produce cuprous oxide under the same conditions (14 mA/cm2 of current density, room temperature).The products prepared with stirring or without stirring were characterized by SEM ((a) and (b)) and TEM ((c) and (d)) respectively. The results are shown in Figure 5. The shape of the Cu2O nanoparticles in two different situations was both in sphere. As can be seen in Figure 5(a) and 5(c), all the nanoparticles are almost uniformly scattered. However, in Figure 5(b), particles with different size tend to aggregate into foot-like products, which can be clearly seen in Figure 5(d). Moreover, the size of those aggregates is large to 2 μm. By comparison, the sizes of the Cu2O sphere nanoparticles are around 600 ~ 800 nm in diameter. This result demonstrates that stirring can greatly make the Cu2O nanoparticles grow uniformly and dispersedly and have no influence of microdischarge.


Cu2O nanoparticles synthesis by microplasma.

Du C, Xiao M - Sci Rep (2014)

The FESEM and TEM images of the Cu2O nanoparticles prepared with stirring ((a) and (c), respectively) and without stirring ((b) and (d), respectively).(14 mA/cm2 of current density, at room temperature).
© Copyright Policy - open-access
Related In: Results  -  Collection

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

f5: The FESEM and TEM images of the Cu2O nanoparticles prepared with stirring ((a) and (c), respectively) and without stirring ((b) and (d), respectively).(14 mA/cm2 of current density, at room temperature).
Mentions: With H2O–ethylene glycol as the electrolyte, the next work is to research the effects of stirring on the morphology of Cu2O prepared by microplasma technology. It can be found that using stirrer will not lead to the instability of microdischarge. Then the stirrer was used to produce cuprous oxide under the same conditions (14 mA/cm2 of current density, room temperature).The products prepared with stirring or without stirring were characterized by SEM ((a) and (b)) and TEM ((c) and (d)) respectively. The results are shown in Figure 5. The shape of the Cu2O nanoparticles in two different situations was both in sphere. As can be seen in Figure 5(a) and 5(c), all the nanoparticles are almost uniformly scattered. However, in Figure 5(b), particles with different size tend to aggregate into foot-like products, which can be clearly seen in Figure 5(d). Moreover, the size of those aggregates is large to 2 μm. By comparison, the sizes of the Cu2O sphere nanoparticles are around 600 ~ 800 nm in diameter. This result demonstrates that stirring can greatly make the Cu2O nanoparticles grow uniformly and dispersedly and have no influence of microdischarge.

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