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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 experimental apparatus diagram of microplasma electrochemical synthesis of Cu2O nanoparticles.
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f1: The experimental apparatus diagram of microplasma electrochemical synthesis of Cu2O nanoparticles.

Mentions: The experimental apparatus for microplasma electrochemical synthesis of Cu2O nanoparticles is shown in Figure 1. A stainless steel tube (0.7 mm inside diameter, 8 cm length) was positioned 3 cm away from the copper electrode (1 cm width, 3 cm length, immersion area is 1 cm2) with a gap of 2 mm between the tube end and the liquid surface. Argon gas flow was coupled to the tube and controlled by a glass rotameter at 60 ml/min. The stainless steel tube acted as the cathode and the copper sheet as the anode. The reactor was made of common glass, with inner diameter of 5.5 cm and length of 8.5 cm. The copper anode was polished and washed with distilled water, and then immerged into electrolyte containing 150 g/L NaCl, 1 g/L NaOH and 1.3 g/L NaNO3 with the distilled water or H2O–ethylene glycol as the solvent. All chemicals were commercially available in analytical and guaranteed grade. When a high voltage (~2000 V) was applied, the microplasma formed at the gas–solution interface and then kept stable by a ballast resistor (R = 50 kΩ) and lowering the voltage to a certain current. During the preparation, the solution was gently stirred with a magnetic stirrer for acquiring the best production. The microplasma–assisted electrolysis was performed at different process conditions for 20 min. At the end of the synthesis, the sediments were centrifuged and washed with deionized water and ethanol for several times. Subsequently, the obtained products were dried in a vacuum oven at 60°C for 6 h.


Cu2O nanoparticles synthesis by microplasma.

Du C, Xiao M - Sci Rep (2014)

The experimental apparatus diagram of microplasma electrochemical synthesis of Cu2O nanoparticles.
© Copyright Policy - open-access
Related In: Results  -  Collection

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

f1: The experimental apparatus diagram of microplasma electrochemical synthesis of Cu2O nanoparticles.
Mentions: The experimental apparatus for microplasma electrochemical synthesis of Cu2O nanoparticles is shown in Figure 1. A stainless steel tube (0.7 mm inside diameter, 8 cm length) was positioned 3 cm away from the copper electrode (1 cm width, 3 cm length, immersion area is 1 cm2) with a gap of 2 mm between the tube end and the liquid surface. Argon gas flow was coupled to the tube and controlled by a glass rotameter at 60 ml/min. The stainless steel tube acted as the cathode and the copper sheet as the anode. The reactor was made of common glass, with inner diameter of 5.5 cm and length of 8.5 cm. The copper anode was polished and washed with distilled water, and then immerged into electrolyte containing 150 g/L NaCl, 1 g/L NaOH and 1.3 g/L NaNO3 with the distilled water or H2O–ethylene glycol as the solvent. All chemicals were commercially available in analytical and guaranteed grade. When a high voltage (~2000 V) was applied, the microplasma formed at the gas–solution interface and then kept stable by a ballast resistor (R = 50 kΩ) and lowering the voltage to a certain current. During the preparation, the solution was gently stirred with a magnetic stirrer for acquiring the best production. The microplasma–assisted electrolysis was performed at different process conditions for 20 min. At the end of the synthesis, the sediments were centrifuged and washed with deionized water and ethanol for several times. Subsequently, the obtained products were dried in a vacuum oven at 60°C for 6 h.

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