Preparation method and application of magnetic copper-iron bimetallic biomass charcoal microspheres
A copper-iron bimetal, biomass carbon technology, applied in metal/metal oxide/metal hydroxide catalysts, chemical instruments and methods, water pollutants, etc., can solve pollution, narrow pH range, difficult to recycle iron Mud and other problems, to achieve the effect of remarkable effect, good applicability and easy repeated use
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Embodiment 1
[0029] (1) Take by weighing 2g chitosan (Cs) in 80mL ultrapure water, add 1.6mL acetic acid solution subsequently, make chitosan dissolve completely, record as solution A;
[0030] (2) Preparation containing 0.8mol / L hexahydrate and ferric chloride (FeCl 3 ·6H 2 O) and 0.4mol / L copper chloride dihydrate (CuCl 2 2H 2 O), and this solution is denoted as solution B;
[0031] (3) Add 10 mL of solution B into solution A, and continue to stir for 60 minutes, then ultrasonically treat for 30 minutes to remove air bubbles, and obtain solution C;
[0032] (4) Accurately weigh 7.5g of sodium hydroxide (NaOH) and 1.23g of sodium acetate (NaAC) and fully dissolve them in 150mL of ultrapure water, and record it as mixed solution D;
[0033] (5) Put solution D in a water bath at 80°C, add solution C to solution D dropwise with a 5mL syringe, let stand for 120min, then wash the prepared gel microspheres with ultrapure water until neutral, and then Dried in a blast drying oven at 80°C to...
Embodiment 2
[0037] The difference between this embodiment and the preparation process of Example 1 is that FeCl in the mixed solution in step (2) 3 ·6H 2 O and CuCl 2 2H 2 The molar concentrations of O were 0.4mol / L and 0.2mol / L, respectively, and the other preparation steps were the same. The prepared catalyst is applied to the heterogeneous electro-Fenton system to oxidatively degrade AMX, the degradation condition is the same as that of the implementation case 1, and the removal of AMX is as follows figure 1 As shown in the curve (b), the removal rate of AMX can reach 85.7% after 35 minutes of reaction.
Embodiment 3
[0039] The difference between this embodiment and the preparation process of Example 1 is that FeCl in the mixed solution in step (2) 3 ·6H 2 O and CuCl 2 2H 2 The molar concentrations of O were 0.6 mol / L and 0.3 mol / L, respectively, and the other preparation steps were the same. The prepared catalyst is applied to the heterogeneous electro-Fenton system to oxidatively degrade AMX, the degradation condition is the same as that of the implementation case 1, and the removal of AMX is as follows figure 1 As shown in the curve (c) in the reaction, the removal rate of AMX can reach 93.5% after 35 minutes of reaction.
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