A kind of electric Fenton cathode introducing active hydrogen and its preparation method and application
A technology of active hydrogen and cathode, which is applied in the field of electric Fenton cathode introducing active hydrogen and its preparation, to achieve the effect of increasing the life time, improving the degree of mineralization, and low cost
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[0051] The present invention also provides a method for preparing an electric Fenton cathode introducing active hydrogen described in the above technical solution, comprising the following steps:
[0052] a) immersing the base electrode in a nickel-containing solution for electroplating to obtain a nickel-plated base electrode;
[0053] b) oxidizing the nickel-plated base electrode obtained in step a) to obtain an electric Fenton cathode with active hydrogen introduced.
[0054] In the invention, firstly, the base electrode is dipped into the solution containing nickel for electroplating to obtain the nickel-plated base electrode. In the present invention, the base electrode is the same as that described in the above technical solution, and will not be repeated here.
[0055] In the present invention, the nickel-containing solution is the electroplating solution, preferably made of NiSO with a mass ratio of (0.8-1.5): (0.02-0.05): (0.03-0.06): (2-3) 4 、NiCl 2 , boric acid a...
Embodiment 1
[0082] (1) Immerse the graphite felt in concentrated nitric acid with a mass concentration of 50%, stir it in a water bath at 60°C to 65°C for 4h, then wash it with distilled water until neutral, then put it into an oven and dry it for 3h at 60°C. Distilled water-acetone-distilled water were ultrasonically cleaned for 15 minutes, excess acetone was washed away with distilled water, and dried overnight in an oven at 60°C to obtain activated graphite felt.
[0083] (2) NiSO with a mass ratio of 1:0.0333:0.0417:2.258 4 、NiCl2 , boric acid, and distilled water were mixed, and stirred at 60°C for 0.5h to completely dissolve to obtain an electroplating solution; the activated graphite felt obtained in step (1) was immersed in the above electroplating solution as a working electrode, and a high-purity nickel plate was used as a counter electrode. At a current density of 80mA / cm 2 Under the conditions of electroplating for 13 minutes; after electroplating, wash with distilled water t...
Embodiment 2
[0089] The electric Fenton cathode that introduces active hydrogen that embodiment 1 provides is connected with anode (the ruthenium iridium coating electrode of titanium substrate) and forms loop; Get the ciprofloxacin of 25mg and be dissolved in 500mL water (do not add acid-base adjustment pH), Add ferrous sulfate to it so that its concentration is 0.2mmol / L, and add sodium sulfate to it to make its concentration 50mmol / L. Before the reaction, feed compressed air into the reactor at a rate of 0.5L / min for 30min. Mineralize the antibiotic solution at 200mA.
[0090] At the same time, the same experiment was carried out with the graphite felt cathode as the control group.
[0091] The system solution of embodiment 2 is carried out total organic carbon detection, and the result sees Figure 4 shown. Depend on Figure 4 It can be seen that the efficiency of graphite felt to mineralize antibiotics under neutral conditions after 8 hours is only 42%, while the efficiency of the ...
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