Preparation method of photocatalytic lithium ferrite-titanium oxide composite block and composite block
A technology for catalyzing lithium ferrite and titanium oxide, which is applied in the field of photocatalysis, can solve the problems of high price, and achieve the effects of complete reaction, high catalytic activity and high photocatalytic activity
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Embodiment 1
[0034] A photocatalytic lithium ferrite-titanium oxide composite block was prepared.
[0035] Step 1: Recycling of Lithium Ferrite Battery Cathode Material
[0036] Pulverize the positive pole piece of lithium ferrite battery waste, pass through a 70-mesh sieve, and roast the obtained powder at 600°C for 1 hour to obtain lithium ferrite positive electrode powder;
[0037] Step 2: Preparation of lithium ferrite block
[0038] Stir and mix the obtained lithium ferrite powder with a 4% polyvinyl alcohol resin solution by mass to form particles with good fluidity and a particle size of 0.25mm-0.45mm. The prepared lithium ferrite particles were put into a grinding tool and pressed into a flake-like block with a diameter of 4mm and a thickness of 0.5mm, and sintered at 950°C for 4h to obtain a lithium ferrite block.
[0039] Step Three: Coating with Titanium Oxide
[0040] Place the obtained lithium ferrite block in a chemical vapor deposition device and raise the temperature to 55...
Embodiment 2
[0049] A photocatalytic lithium ferrite-titanium oxide composite block was prepared.
[0050] Step 1: Recycling of Lithium Ferrite Battery Cathode Material
[0051] The positive pole pieces of lithium ferrite battery waste were crushed and passed through an 80-mesh sieve, and the obtained powder was calcined at 400° C. for 1.5 hours to obtain lithium ferrite powder. The obtained powder was washed with methanol and dried.
[0052] Step 2: Preparation of lithium ferrite block
[0053] Stir and mix the obtained lithium ferrite powder with a 4% polyvinyl alcohol resin solution by mass to form particles with good fluidity and a particle size of 0.25mm-0.60mm. The prepared lithium ferrite particles were put into a grinding tool and pressed into a flake-like block with a diameter of 10 mm and a thickness of 0.5 mm, and sintered at 1000° C. for 5 hours to obtain a lithium ferrite block.
[0054] Step Three: Coating with Titanium Oxide
[0055] Place the obtained lithium ferrite bl...
Embodiment 3
[0061] A photocatalytic lithium ferrite-titanium oxide composite block was prepared.
[0062] Step 1: Recycling of Lithium Ferrite Battery Cathode Material
[0063] The positive pole pieces of lithium ferrite battery waste were crushed and passed through an 80-mesh sieve, and the obtained powder was calcined at 500° C. for 2 hours to obtain lithium ferrite powder. The obtained powder was washed with ethanol and dried.
[0064] Step 2: Preparation of lithium ferrite block
[0065] Stir and mix the obtained lithium ferrite powder with a 4% polyvinyl alcohol resin solution by mass to form particles with good fluidity and a particle size of 0.25mm-0.60mm. Put the prepared lithium ferrite particles into a grinding tool and press them into a thin sheet-like block with a diameter of 4 mm and a thickness of 2.0 mm, and sinter at 1200 ° C for 6 hours to obtain a lithium ferrite block.
[0066] Step Three: Coating with Titanium Oxide
[0067] Place the obtained lithium ferrite block...
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