Preparation method and purpose of biomass charcoal modified carbon nitride composite photocatalyst
A technology of biomass carbon and carbon nitride, which is used in physical/chemical process catalysts, chemical instruments and methods, water pollutants, etc., can solve the problem of few public reports of composite photocatalysts, and achieve good photocatalytic activity and stability. The effect of high stability, high degradation rate and simple synthesis
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Embodiment 1
[0033] Step 1. Preparation of biochar: Weigh 50g of fallen magnolia flower petals, wash with deionized water to remove impurities such as sediment, put them in an oven for drying at 60°C, and use a pulverizer to crush them after drying, and filter them through a 100-mesh sieve After the pollen was obtained, 1 g of magnolia petal pollen was transferred to a crucible and placed in a muffle furnace for calcination for 2 hours at a calcination temperature of 500 °C and a heating rate of 3 °C min -1 , to obtain a black powder solid, recorded as biochar.
[0034] Step 2. Preparation of the mixture of urea and biochar: take 0.1 g of the above biochar, add 1 g of urea to deionized water to obtain a suspension, and then dissolve a certain amount of urea in the above suspension and stir until it is evenly dispersed to obtain urea and a suspension solution of biochar, and then placed in a water bath, stirred and evaporated to dryness, the temperature of the water bath was 60° C., and the...
Embodiment 2
[0038] Step 1. Preparation of biochar: Weigh 50g of fallen magnolia flower petals, wash with deionized water to remove impurities such as sediment and put them in an oven for drying at 70°C. After drying, use a pulverizer to crush them and filter them through a 100-mesh sieve The pollen was obtained, and then 5g of magnolia petal pollen was transferred to a crucible and placed in a muffle furnace for calcination for 5h at a calcination temperature of 500°C and a heating rate of 5°C·min -1 , to obtain a black powder solid, recorded as biochar.
[0039] Step 2, preparation of the mixture of urea and biochar: take 1 g of the above biochar, add 5 g of urea to deionized water to obtain a suspension, then dissolve a certain amount of urea in the suspension and stir until it is evenly dispersed to obtain urea and The suspension solution of biochar is then placed in a water bath, stirred and evaporated to dryness, the temperature of the water bath is 80° C., and the solid is pulverize...
Embodiment 3
[0043] Step 1. Preparation of biochar: Weigh 50g of fallen magnolia flower petals, wash with deionized water to remove impurities such as silt, put them in an oven for drying at 80°C, and after drying, crush them with a pulverizer and filter through a 100-mesh sieve After obtaining the pollen, take 3g of crushed magnolia petal pollen into a crucible and place it in a muffle furnace for calcination for 3h, the calcination temperature is 500°C, and the heating rate is 4°C·min -1 , to obtain a black powder solid, recorded as biochar.
[0044] Step 2. Preparation of the mixture of urea and biochar: Take 0.5g of the above biochar, add 3g of urea into deionized water to obtain a suspension, then dissolve a certain amount of urea in the above suspension and stir until it is evenly dispersed , to obtain a suspension solution of urea and biochar, then place it in a water bath, stir and evaporate to dryness, the temperature of the water bath is 70° C., grind the solid to obtain a mixtur...
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