A kind of preparation method of chlorine analysis catalytic electrode supported by carbon fiber
A catalytic electrode, carbon fiber technology, applied in electrodes, electrolysis components, electrolysis process, etc., can solve the problems of expensive metal ruthenium, increased chlorine evolution potential, deactivation, etc.
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Embodiment 1
[0044] A CF-loaded RuO 2 The preparation method is carried out according to the following steps:
[0045] 1) CF was pretreated, acetone, ethanol, and ultrapure water were ultrasonicated for 30 min each, and air-dried at room temperature for use.
[0046] 2) A three-electrode system was used, with CF, Pt sheet and Ag / AgCl as the working electrode, auxiliary electrode and reference electrode, respectively, with 5 mmol / L RuCl 3 The acidic aqueous solution was used as the electrolyte, heated in a water bath at 50 °C, and the cathodic deposition method was used to apply a constant working current of 20 mA cm -2 , the electrodeposition time was 1h, and the electrodeposited electrode was annealed at 500 °C for 5h in a tube furnace, and finally the CF-supported RuO was prepared. 2 nanoparticles. Through scanning electron microscope (SEM) observation, it was found that a layer of nanoparticles was uniformly loaded on CF. Figure 4 ; X-ray diffraction (XRD) analysis found that there...
Embodiment 2
[0048] A CF-loaded RuO 2 / SnO 2 The preparation method is carried out according to the following steps:
[0049] 1) CF was pretreated, acetone, ethanol, and ultrapure water were ultrasonicated for 30 minutes each, and air-dried at room temperature for use;
[0050] 2) Preparation of SnO 2 Precursor solution, SnCl 2 ·2H 2 O 2.5mmol, Na 3 C 6 H 5 O 7 ·2H 2 O 5mmol, ultrapure water 20mL, ethanol 20mL, CF and SnO 2 The precursor solution was put into the reaction kettle for hydrothermal reaction at 180°C for 8h, the reaction was completed, and the SnO 2 The CF was annealed in a tube furnace at 400 °C for 2 h.
[0051] 3) Using a three-electrode system, using SnO 2 / CF, Pt sheet and Ag / AgCl as working electrode, auxiliary electrode and reference electrode, 5mmol / L RuCl 3 The acidic aqueous solution was used as the electrolyte, heated in a water bath at 50 °C, and the cathodic deposition method was used to apply a constant operating current of 20 mA cm -2 , the electro...
Embodiment 3
[0053] A CF-loaded RuO 2 / TiO 2 / SnO 2 The preparation method is carried out according to the following steps:
[0054] 1) CF was pretreated, acetone, ethanol, and ultrapure water were ultrasonicated for 30 minutes each, and air-dried at room temperature for use;
[0055] 2) Preparation of SnO 2 Precursor solution, SnCl 2 ·2H 2 O 2.5mmol, Na 3 C 6 H 5 O 7 ·2H 2 O 5mmol, ultrapure water 20mL, ethanol 20mL, CF and SnO 2 The precursor solution was put into the reaction kettle for hydrothermal reaction at 180°C for 8h, the reaction was completed, and the SnO 2 The CF was annealed in a tube furnace at 400 °C for 2 h.
[0056] 3) Preparation of TiO 2 Precursor solution, tetrabutyl titanate 0.5mL, HCl 12mL, ultrapure water 12mL, and SnO 2 / CF and TiO 2 The precursor solution was put into the reaction kettle for hydrothermal reaction at 180°C for 2h, the reaction was completed, and the loaded TiO 2 and SnO 2 The CF was annealed in a tube furnace at 500 °C for 2 h.
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