A lead dioxide-carbon nanotube adsorption submicron electrochemical reactor and its preparation method and application
A technology of carbon nanotubes and lead dioxide, which is applied in the field of electrocatalytic electrode preparation, can solve problems such as low adsorption capacity and unstable electrolysis process, and achieve the effects of enhancing life, increasing electrochemical active area, and enhancing active adsorption
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Embodiment 1
[0044] Cut the antimony tin oxide conductive glass into a size of 5*5cm, wash it with acetone, ethanol and water; mix the dispersion of 0.6 μm polystyrene microspheres with a mass fraction of 0.25% and the carbon nanotubes with a mass fraction of 0.25% Mix the dispersion liquid at a mass ratio of 2:1, heat it in a water bath at 80°C after mixing, and keep it for 1 hour; add 2.5mL of the mixed dispersion liquid dropwise on the cleaned tin-antimony oxide conductive glass, and then place the sample at 40°C After drying in an oven, a film of polystyrene microspheres adhered with carbon nanotubes is formed on the surface of the tin-antimony oxide conductive glass. The prepared sample was used as the anode, the stainless steel of the same size was used as the cathode, the distance between the two electrodes was controlled to 0.5 cm, the magnetic stirrer was turned on to stir, and the anode constant current electrodeposition was carried out in the electrodeposition solution. Among th...
Embodiment 2
[0060] The lead dioxide-carbon nanotube adsorption submicron electrochemical reactor prepared in comparative example 1 and the CF-PbO prepared in comparative examples 1A-1D 2 , 3D-PbO 2 , CNTs / PbO 2 and PbO 2 - Adsorption effect of several CNTs electrodes on ferulic acid.
[0061] The specific method is as follows: prepare 300 mL of ferulic acid simulated wastewater with a concentration of 40 mg / L each, and use the prepared electrode and stainless steel plate as the anode and cathode, respectively. The size of the anode is 5cm*5cm, and the geometric surface area is 25cm 2 , the thickness is 0.1cm, the geometric size of the cathode is the same as that of the anode, and the titanium wire is connected to the positive and negative poles of the power supply respectively. The adsorption of ferulic acid was carried out, and the adsorption properties of several electrodes for ferulic acid were compared.
[0062] image 3 It is the lead dioxide-carbon nanotube adsorption submicro...
Embodiment 3
[0064] Prepare 300mL of simulated ferulic acid wastewater with a concentration of 40mg / L, and add 0.05M Na 2 SO 4 As an electrolyte, the lead dioxide-carbon nanotube adsorption submicron electrochemical reactor prepared in Example 1 and the CF-PbO prepared in Comparative Examples 1A-1D were respectively 2 , 3D-PbO 2 , CNTs / PbO 2 and PbO 2 - Several electrodes of CNTs are used as anode, and stainless steel is used as cathode to degrade ferulic acid, and the current density is controlled to 20mA / cm 2 , to compare the degradation performance of two electrodes to ferulic acid.
[0065] Figure 4 It is the lead dioxide-carbon nanotube adsorption submicron electrochemical reactor prepared in Example 1 of the present invention and the CF-PbO prepared in Comparative Examples 1A-1D 2 , 3D-PbO 2 , CNTs / PbO 2 and PbO 2 - Time-dependent diagram of the removal efficiency of ferulic acid by several CNTs electrodes. It can be seen from the figure that after electrolysis for 1 h, th...
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