Ag/GO/Ti electrode, preparation method of Ag/GO/Ti electrode, and application of Ag/GO/Ti electrode to removal of nitrate in water
An electrode, hydrochloric acid technology, applied in Ag/GO/Ti electrode and preparation, the application field of removing nitrate in water, can solve the problems of decreased electrocatalytic performance, high energy consumption, easy falling off of metal active layer, etc. The effect of low consumption, simple operation and low equipment requirements
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Embodiment 1
[0023] Step 1, substrate treatment: polish the pure titanium plate smoothly, wash it with 0.1mol / L sodium hydroxide, 0.1mol / L hydrochloric acid and distilled water in sequence, boil it in 5% oxalic acid solution for 1h, etch it into a uniform uneven surface, and obtain Ti The matrix was stored in absolute ethanol for future use.
[0024] Step 2, electrolyte preparation: measure GO and AgNO 3 dissolved in deionized water to prepare an electrolyte, in which GO and AgNO 3 The mass ratio of GO to deionized water is 1:1000.
[0025] Step 3, uniformly electroplate GO and Ag onto the Ti substrate by electrodeposition, immerse the Ti substrate and Pt electrode in the prepared electrolyte, and then connect the positive and negative electrodes of the constant current power supply, in a water bath at 30°C, use 0.01A Electrodeposition at a constant current for 10min, rinsed with clean water, and dried to obtain an Ag / GO / Ti electrode, wherein the effective area of the Ti matrix to the ...
Embodiment 2
[0027] Step 1, substrate treatment: polish the pure titanium plate smoothly, wash it with 0.5mol / L sodium hydroxide, 0.5mol / L hydrochloric acid and distilled water in sequence, boil it in 15% oxalic acid solution for 2 hours, etch it into a uniform uneven surface to obtain Ti The matrix was stored in absolute ethanol for future use.
[0028] Step 2, electrolyte preparation: measure GO and AgNO 3 dissolved in deionized water to prepare an electrolyte, in which GO and AgNO 3 The mass ratio of GO to deionized water is 1:5000.
[0029] Step 3, uniformly electroplate GO and Ag onto the Ti substrate by electrodeposition, immerse the Ti substrate and Pt electrode in the prepared electrolyte B, and then connect the positive and negative electrodes of the constant current power supply, in a water bath at 40°C, use 0.05 A constant current, electrodeposited for 20min, rinsed with clean water, and dried to obtain an Ag / GO / Ti electrode, wherein the effective area of the Ti matrix to th...
Embodiment 3
[0031] Step 1, substrate treatment: polish the pure titanium plate smoothly, wash it with 1mol / L sodium hydroxide, 1mol / L hydrochloric acid and distilled water successively, boil in 20% oxalic acid solution for 3 hours, etch into a uniform uneven surface to obtain the Ti substrate, Store in absolute ethanol for later use.
[0032] Step 2, electrolyte preparation: measure GO and AgNO 3 dissolved in deionized water to prepare an electrolyte, in which GO and AgNO 3 The mass ratio of GO to deionized water is 1:10000.
[0033] Step 3, use the electrodeposition method to uniformly electroplate GO and Ag onto the Ti substrate, immerse the Ti substrate and the Pt electrode in the prepared electrolyte, and then connect the positive and negative electrodes of the constant current power supply, in a 50 °C water bath, use 0.1A Electrodeposition at a constant current for 30min, rinsed with clean water, and dried to obtain an Ag / GO / Ti electrode, wherein the effective area of the Ti matr...
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