Preparation method of biomass derived carbon material

[0034] (1) Preparation of biomass-derived carbon materials

[0035] At room temperature, mix 5g of soybean protein isolate powder (Shansong Biotechnology, protein content ≥ 90%) with 5g of potassium hydroxide and 25g of water (mass ratio 1:1:5), and mechanically stir at 150r / min in a water bath at 85°C After 30 minutes, a colloidal semi-hydrolyzed product was formed, and then the colloidal semi-hydrolyzed product was dried in an oven at 100°C for 12 hours to obtain a dry hydrolyzed powder;

[0036] Mix 2 g of poplar wood powder with a particle size of 150 mesh, 1 g of dry hydrolyzed powder, and 2 g of zinc nitrate hexahydrate (mass ratio 1:0.5:1), stir at 60 r / min for 30 min, and transfer the resulting solid mixture into a tube furnace. Under the protection of nitrogen, the temperature was raised from room temperature to 900°C at a rate of 5°C / min, and high-temperature heat treatment was carried out at 900°C for 3 hours. During the heat treatment, zinc nitrate hexahydrate f

[0042] (1) Preparation of biomass-derived carbon materials

[0043] At room temperature, mix 5g of soybean protein isolate powder with 2.5g of sodium hydroxide and 20g of water (mass ratio 1:0.5:4), and mechanically stir at 200r / min in a 95°C water bath for 60min to form a colloidal semi-hydrolyzed product, and then the gelatinous The semi-hydrolyzed product was dried in an oven at 80°C for 24 hours to obtain a dry hydrolyzed powder;

[0044]Mix 2 g of poplar wood powder with a particle size of 150 mesh, 2 g of dry hydrolyzed powder, and 4 g of zinc nitrate hexahydrate (mass ratio 1:1:2), stir at 80 r / min for 20 min, and transfer the obtained solid mixture into a tube furnace. Under the protection of nitrogen, raise the temperature from room temperature to 1000°C at a rate of 3°C / min, and perform high-temperature heat treatment at 1000°C for 2 hours. During heat treatment, zinc nitrate hexahydrate first melts to form a liquid state and dissolves the dry hydrolyzed powder an

[0047] (1) Preparation of biomass-derived carbon materials

[0048] At room temperature, mix 5g of soybean protein isolate powder with 20g of potassium hydroxide and 40g of water (mass ratio 1:4:8), and mechanically stir at 300r / min in a 65°C water bath for 15min to form a colloidal semi-hydrolyzed product, and then the colloidal The semi-hydrolyzed product was dried in an oven at 90°C for 24 hours to obtain a dry hydrolyzed powder;

[0049] Mix 2 g of poplar wood powder with a particle size of 150 mesh, 4 g of dry hydrolyzed powder, and 6 g of zinc nitrate hexahydrate (mass ratio 1:2:3), stir at 100 r / min for 30 min, and transfer the resulting solid mixture into a tube furnace. Under the protection of nitrogen, the temperature was raised from room temperature to 800°C at a rate of 4°C / min, and high-temperature heat treatment was carried out at 800°C for 5 hours. During the heat treatment, zinc nitrate hexahydrate first melted to form a liquid state, and the dry hydrolyzed