Three-dimensional electrode filling material and preparation method thereof
A three-dimensional electrode, mass percentage technology, applied in chemical instruments and methods, water pollutants, water/sewage treatment, etc., can solve problems such as easy corrosion, easy hardening of fillers, short service life, etc., to prolong service life and improve ductility performance, and the effect of improving the utilization rate
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Embodiment 1
[0036] Put 200g of iron filings with a diameter of 0.5-2mm into 15% sodium hydroxide solution, heat at 60°C and ultrasonically treat for 40min, then filter to remove oil. The resulting solid was soaked in 10% dilute sulfuric acid for 30 minutes and then filtered to remove rust. The above-mentioned degreasing and derusting treatments are collectively referred to as activating iron filings. The activated iron filings were placed in 5% copper sulfate solution, heated and reacted at 60°C for 60 minutes, filtered, dried, and then calcined at 500°C for 4 hours without oxygen. Soak the cooled iron filings in the prepared 1000mL nickel-plating solution, heat (50°C) under ultrasonic conditions for nickel-plating for 40min, filter, wash with distilled water for 3 times, dry, and bake at 800°C for 4 hours without air to obtain Improved iron filings. Wherein the step of configuring the nickel plating solution comprises: preparing 500ml of 3% nickel sulfate solution, adding sodium citrat...
Embodiment 2
[0040]Put 200g of iron filings with a diameter of 0.5-2mm into 10% sodium hydroxide solution, heat at 60°C and ultrasonically treat for 40min, then filter to remove oil. The resulting solid was soaked in 10% dilute sulfuric acid for 30 minutes and then filtered to remove rust. The above-mentioned degreasing and derusting treatments are collectively referred to as activating iron filings. The activated iron filings were placed in 5% copper sulfate solution, heated and reacted at 60°C for 60 minutes, filtered, dried, and then calcined at 500°C for 4 hours without oxygen. Soak the cooled iron filings in the prepared 1000mL nickel plating solution, heat nickel plating at 50°C for 40min under ultrasonic conditions, filter, wash 3 times with distilled water, dry, and bake at 800°C for 4 hours without air to get improved Iron filings. Wherein the step of configuring nickel plating solution comprises: wherein the step of configuring nickel plating solution comprises: preparing 500ml...
Embodiment 3
[0044] Put 200g of iron filings with a diameter of 0.5-2mm into 10% sodium hydroxide solution, heat at 60°C and ultrasonically treat for 40min, then filter to remove oil. The resulting solid was soaked in 10% dilute sulfuric acid for 30 minutes and then filtered to remove rust. The above-mentioned degreasing and derusting treatments are collectively referred to as activating iron filings. The activated iron filings were placed in 5% copper sulfate solution, heated and reacted at 60°C for 60 minutes, filtered, dried, and then calcined at 500°C for 4 hours without oxygen. Soak the cooled iron filings in the prepared 1000mL nickel plating solution, heat the nickel plating at 40°C for 40min under ultrasonic conditions, filter, wash with distilled water for 3 times, dry, and bake at 700°C for 4 hours without air to get improved Iron filings. Wherein the step of configuring the nickel plating solution comprises: preparing 500ml of 5% nickel sulfate solution, adding sodium citrate ...
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