Method for manufacturing carbon nanotube electrocatalytic electrode for organic waste water treatment

Abstract

The present invention relates to the making process of carbon nanotube electrically catalytic electrode for treating organic waste water, and belongs to the field of electrode material production in electrically catalytic oxidation technology. After carbon nanotube with high catalytic activity and great specific surface area and binder PTFE in certain ratio are mixed, the mixture is cold pressed to form and wire is led out from one end of the epoxy resin cured electrode. The carbon nanotube electrically catalytic electrode has high conducting performance and low power consumption, and may be modified to obtain high electrically catalytic activity. The carbon nanotube electrically catalytic electrode is suitable for use in treating organic waste water and has high degradation rate on organic matter in waste water.

Description

technical field

[0001] The invention relates to a method for manufacturing a carbon nanotube electrocatalytic electrode for treating organic wastewater, and belongs to the technical field of electrode material manufacturing in electrocatalytic oxidation technology. Background technique

[0002] The high concentration of organic pollutants, high COD value of chemical oxygen demand and deep water quality in organic wastewater have always been one of the difficult problems in the domestic and foreign scientific and technological circles. After the current treatment technology degrades organic wastewater, the results show that the degradation of organic pollutants is incomplete, the decolorization effect is poor, and the COD removal rate is low, and some treatment technologies are also accompanied by secondary pollution hazards. The electrocatalytic oxidation technology is to make the pollutants undergo direct electrochemical reaction on the electrode or use the strong oxidizing...

Examples

Embodiment 1

[0019] In this embodiment, the manufacturing method of the carbon nanotube electrocatalytic electrode for treating organic wastewater has the following process steps:

[0020] (1) Purification of carbon nanotube powder: Soak the carbon nanotube powder in 20% nitric acid solution for 24 hours, then ultrasonically disperse it for 2 hours to remove the residual metal catalyst when preparing carbon nanotubes; then carry out suction filtration and wash with distilled water Washed several times until the pH of the eluent was 7, and then dried to constant weight.

[0021] (2) Carry out modification treatment to the purified carbon nanotube powder: the carbon nanotube powder is roasted at a high temperature in an air atmosphere, the roasting temperature is 600° C., and the time is 0.5 hour; 1500rpm.

[0022] (3) Disperse polytetrafluoroethylene (PTFE) binder in carbon nanotubes: use an appropriate amount of polytetrafluoroethylene emulsion, and use absolute ethanol as a solvent, add ...

technical field

[0001] The invention relates to a method for manufacturing a carbon nanotube electrocatalytic electrode for treating organic wastewater, and belongs to the technical field of electrode material manufacturing in electrocatalytic oxidation technology. Background technique

[0002] The high concentration of organic pollutants, high COD value of chemical oxygen demand and deep water quality in organic wastewater have always been one of the difficult problems in the domestic and foreign scientific and technological circles. After the current treatment technology degrades organic wastewater, the results show that the degradation of organic pollutants is incomplete, the decolorization effect is poor, and the COD removal rate is low, and some treatment technologies are also accompanied by secondary pollution hazards. The electrocatalytic oxidation technology is to make the pollutants undergo direct electrochemical reaction on the electrode or use the strong oxidizing...

Examples

Embodiment 1

[0019] In this embodiment, the manufacturing method of the carbon nanotube electrocatalytic electrode for treating organic wastewater has the following process steps:

[0020] (1) Purification of carbon nanotube powder: Soak the carbon nanotube powder in 20% nitric acid solution for 24 hours, then ultrasonically disperse it for 2 hours to remove the residual metal catalyst when preparing carbon nanotubes; then carry out suction filtration and wash with distilled water Washed several times until the pH of the eluent was 7, and then dried to constant weight.

[0021] (2) Carry out modification treatment to the purified carbon nanotube powder: the carbon nanotube powder is roasted at a high temperature in an air atmosphere, the roasting temperature is 600° C., and the time is 0.5 hour; 1500rpm.

[0022] (3) Disperse polytetrafluoroethylene (PTFE) binder in carbon nanotubes: use an appropriate amount of polytetrafluoroethylene emulsion, and use absolute ethanol as a solvent, add ...