An electrocatalytic coupled advanced oxidation system and its application
A technology of advanced oxidation and electrocatalysis, applied in chemical instruments and methods, water/sludge/sewage treatment, sterilization/microdynamic water/sewage treatment, etc. Insufficient impact and other problems, to achieve the effect of good catalytic effect, easy recycling, and easy-to-obtain materials
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Embodiment 1
[0077] Study on the Effect of Different Concentrations of NaCl in Anolyte on the Degradation Rate of p-Nitrophenol
[0078] As a three-dimensional hexagonal star Co 3 o 4 As the anode material, the three-dimensional hexagonal star-shaped Co 3 o 4 Attached to the conductive glass as the anode, the platinum sheet as the cathode, and Ag / AgCl as the reference electrode; add 70mL of anolyte to the series of anode cells, and the concentration of sodium chloride in the anolyte is 10, 20, 30, 50 and 100mmol / L, the concentration of potassium persulfate is 0.01mmol / L, and the concentration of p-nitrophenol is 10mg / L; 70mL of sodium chloride solution with a concentration of 50mmol / L is added to the cathode cell, and the Degradation; Applied bias voltage is 2.5V vs Ag / AgCl;
[0079] The anode is attached with a three-dimensional six-pointed star-shaped Co 3 o 4 The conductive glass is prepared by the following steps:
[0080] Dissolve 2mmol of cobalt nitrate hexahydrate in 40mL of ...
Embodiment 2
[0083] The effect of different concentrations of potassium hydrogen persulfate in the anolyte on the degradation rate of p-nitrophenol was studied using three-dimensional hexagonal star-shaped Co 3 o 4 As the anode material, the three-dimensional hexagonal star-shaped Co 3 o 4 Attached to the conductive glass as the anode, the platinum sheet as the cathode, and Ag / AgCl as the reference electrode; add 70mL of anolyte to the series of anode cells, and the concentration of sodium chloride in the anolyte is 50mmol / L. The concentration of potassium bisulfate is 0.01, 0.32, 1, 4, 8 and 16mmol / L respectively, and the concentration of p-nitrophenol is 10mg / L; add 70mL of sodium chloride solution with a concentration of 50mmol / L in the cathode pool as the cathode Electrolyte, energized for degradation; applied bias voltage is 2.5V vs Ag / AgCl;
[0084] The preparation method of the anode is the same as that of Example 1.
[0085] figure 2 It is the degradation diagram of p-nitroph...
Embodiment 3
[0088] As a three-dimensional hexagonal star Co 3 o 4 As the anode material, the three-dimensional hexagonal star-shaped Co 3 o 4 Attached to the conductive glass as the anode, the platinum sheet as the cathode, and Ag / AgCl as the reference electrode; add 70mL of anolyte to the anode cell, the concentration of sodium chloride in the anolyte is 50mmol / L, persulfuric acid The concentration of potassium hydrogen is 0.01mmol / L, and the concentration of p-nitrophenol is 10mg / L; 70mL of sodium chloride solution with a concentration of 50mmol / L is added to the cathode cell, and power is applied for degradation for 1h; the applied bias voltage is 2.5V vs Ag / AgCl;
[0089] The preparation method of the anode is the same as that of Example 1.
[0090] image 3 The ultraviolet-visible full-band diagram of the electrocatalytic coupled advanced oxidation system degrading p-nitrophenol for 1 h is provided for this example. from image 3 It can be seen that when the applied bias volta...
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