Diamond electrode with high ozone catalytic activity as well as preparation method and application thereof
A diamond electrode, catalytic activity technology, applied in the field of electrochemistry, can solve the problems of complex composition of medical wastewater
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Embodiment 1
[0054] Step 1: Substrate pretreatment. Put a double-layer or triple-layer titanium mesh with a size of 3.5cm×7cm into 96mL (deionized water 90mL, concentrated sulfuric acid 6mL) of dilute sulfuric acid solution, and ultrasonically polish the surface for 30min. Then the titanium mesh was taken out, cleaned by ultrasonication in acetone and ethanol respectively for 5 minutes, the cleaned substrate was placed in diamond suspension and ultrasonicated for 30 minutes, and then blown dry with nitrogen at room temperature after taking it out.
[0055] Step 2: depositing boron doped diamond. Place the titanium mesh base on the abutment, keep the titanium mesh base in the middle of the hot wire and parallel to the hot wire, and the distance between the hot wire and the surface of the substrate is 20 mm. The pressure in the furnace is pumped down to below 0.1Pa, and then the reaction mixture gas is introduced. The gas introduced includes methane, hydrogen, and trimethylborane. Methane i...
Embodiment 2
[0060] Step 1: Substrate pretreatment. Put a double-layer or triple-layer titanium mesh with a size of 3.5cm×7cm into 96mL (deionized water 90mL, concentrated sulfuric acid 6mL) of dilute sulfuric acid solution, and ultrasonically polish the surface for 30min. Then the titanium mesh was taken out, cleaned by ultrasonication in acetone and ethanol respectively for 5 minutes, the cleaned substrate was placed in diamond suspension and ultrasonicated for 30 minutes, and then blown dry with nitrogen at room temperature after taking it out.
[0061] Step 2: depositing boron doped diamond. Place the titanium mesh base on the abutment, keep the titanium mesh base in the middle of the hot wire and parallel to the hot wire, and the distance between the hot wire and the surface of the substrate is 20 mm. The pressure in the furnace is pumped down to below 0.1Pa, and then the reaction mixture gas is introduced. The gas introduced includes methane, hydrogen, and trimethylborane. Methane i...
Embodiment 3
[0067] Step 1: Substrate pretreatment. Put a double-layer or triple-layer titanium mesh with a size of 3.5cm×7cm into 96mL (deionized water 90mL, concentrated sulfuric acid 6mL) of dilute sulfuric acid solution, and ultrasonically polish the surface for 30 minutes. Then the titanium mesh was taken out, cleaned by ultrasonication in acetone and ethanol respectively for 5 minutes, the cleaned substrate was placed in diamond suspension and ultrasonicated for 30 minutes, and then blown dry with nitrogen at room temperature after taking it out.
[0068] Step 2: depositing boron doped diamond. Place the titanium mesh base on the abutment, keep the titanium mesh base in the middle of the hot wire and parallel to the hot wire, and the distance between the hot wire and the surface of the substrate is 20mm. The pressure in the furnace is pumped down to below 0.1Pa, and then the reaction mixture gas is introduced. The gas introduced includes methane, hydrogen, and trimethylborane. Metha...
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