A kind of method and application of synthesizing modified iron-cobalt bimetallic particles from Ginkgo biloba
A ginkgo biloba, bimetallic technology, applied in chemical instruments and methods, nanotechnology for materials and surface science, water/sludge/sewage treatment, etc., can solve the problems of secondary pollution of chemical environment and achieve removal The effect of improving the effect, easy to obtain the material, and saving the cost of synthesis
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Embodiment 1
[0030] Ginkgo leaves were washed with deionized water and dried at 100°C for 24 hours. The dried ginkgo leaves were crushed and sieved, and the pine bark powder with a particle size below 300 μm was selected, soaked in anhydrous methanol at a ratio of 60 g / L, and ultrasonicated (100 W, 40 ° C) for 1 h. Ginkgo biloba powder methanol liquid is vacuum filtered through a 0.45 μm organic filter membrane, and the collected filtrate is ginkgo biloba extract. Ginkgo biloba extract was mixed with the ferrous sulfate solution of 20mL 11.1204g / L respectively according to volume ratio 0:1, 0.5:1, 1.0:1, 1.5:1, 2.0:1, 2.5:1, 3.0:1 ( The dosage of Ginkgo biloba extract was 0, 10, 20, 30, 40, 50, 60mL respectively) to obtain the iron salt-Ginkgo biloba extract mixture, which was shaken in a constant temperature water bath shaker for 5min (250rpm, 25°C). Then, 20 mL of 4.3152 g / L potassium borohydride solution was added dropwise to the mixture, and oscillated while adding. A black solid is ...
Embodiment 2
[0034] Ginkgo leaves were washed with deionized water and dried at 100°C for 24 hours. The dried ginkgo leaves were crushed and sieved, and the ginkgo leaf powder with a particle size below 300 μm was selected, soaked in anhydrous methanol at a ratio of 50 g / L, and ultrasonicated (90 W, 35 ° C) for 1 h. Ginkgo biloba powder methanol liquid is vacuum filtered through a 0.45 μm organic filter membrane, and the collected filtrate is ginkgo biloba extract. Mix the ginkgo leaf extract with 20mL 33.3612g / L ferrous sulfate solution according to the volume ratio of 1.5:1 (the amount of ginkgo leaf extract is 30mL) to obtain the iron salt-gingko leaf extract mixture, which is placed in a constant temperature water bath shaker Shake for 5 min (240 rpm, 25°C). After adjusting the pH value of the mixed solution to 3.0, 4.4 (without adjusting the pH value), 5.0, 7.0, 9.0, and 11.0, add 20 mL of 16.1820 g / L potassium borohydride solution dropwise to the mixed solution, and oscillate while ...
Embodiment 3
[0038] Ginkgo leaves were washed with deionized water and dried at 100°C for 24 hours. The dried ginkgo leaves were crushed and sieved, and the ginkgo leaf powder with a particle size below 300 μm was selected, soaked in anhydrous methanol at a ratio of 40 g / L, and ultrasonicated (80 W, 30 ° C) for 1 h. Ginkgo biloba powder methanol liquid is vacuum filtered through a 0.45 μm organic filter membrane, and the collected filtrate is ginkgo biloba extract. Mix the ginkgo leaf extract with 20mL 0.20mol / L ferrous sulfate solution according to the volume ratio of 1.5:1 (the amount of ginkgo leaf extract is 30mL) to obtain the iron salt-gingko leaf extract mixture, and place it in a constant temperature water bath shaker Shake for 5 min (230 rpm, 25°C). Add 20 mL of 0.60 mol / L potassium borohydride solution dropwise to the mixed solution with an initial pH value of 4.4 (without adjusting the pH value), shake while adding, a black solid is formed in the system, and bubbles are constan...
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