Preparation method of water-soluble nitrogen-phosphorus-boron codoped carbon quantum dot
A technology of carbon quantum dots and nitrogen, phosphorus and boron, which is applied in the field of preparation of water-soluble nitrogen, phosphorus and boron co-doped carbon quantum dots, can solve the unfavorable continuous and large-scale production of fluorescent carbon quantum dots, non-renewable energy, and low carbon quantum yield and other problems, to achieve the effect of rich carbon source, high quantum yield and good water solubility
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Embodiment 1
[0029] A method for preparing water-soluble nitrogen, phosphorus and boron co-doped carbon quantum dots, comprising the following steps:
[0030] Step 1. Dissolve 0.1g of phenylphosphonic acid in 20mL of ultrapure water to obtain precursor solution I, and dissolve 0.1g of 3-aminophenylboronic acid in 20mL of ultrapure water to obtain precursor solution II, in a volume ratio of 1: 1 Uniformly mixing precursor solution I and precursor solution II to obtain a mixed solution;
[0031] Step 2. Stir the mixed solution prepared in step 1 evenly, put it into the polytetrafluoroethylene liner of the hydrothermal synthesis reaction kettle, and then place the hydrothermal synthesis reaction kettle in a constant temperature box for heating to obtain a light yellow solution. The temperature of the incubator is 180°C, and the reaction time is 6h;
[0032] Step 3, filter the light yellow solution obtained in step 2 to obtain the filtrate, then dialyze the filtrate, use a dialysis bag with a...
Embodiment 2
[0034] A method for preparing water-soluble nitrogen, phosphorus and boron co-doped carbon quantum dots, comprising the following steps:
[0035] Step 1, 0.1g phenylphosphonic acid was dissolved in 20mL ultrapure water to obtain precursor solution I, and 0.1g 3-aminophenylboronic acid was dissolved in 20mL ultrapure water to obtain precursor solution II, with a volume ratio of 2: 1 Uniformly mixing precursor solution I and precursor solution II to obtain a mixed solution;
[0036] Step 2. Stir the mixed solution prepared in step 1 evenly, put it into the polytetrafluoroethylene liner of the hydrothermal synthesis reaction kettle, and then place the hydrothermal synthesis reaction kettle in a constant temperature box for heating to obtain a light yellow solution. The temperature of the incubator is 180°C, and the reaction time is 6h;
[0037] Step 3, filter the light yellow solution obtained in step 2 to obtain the filtrate, then dialyze the filtrate, use a dialysis bag with a...
Embodiment 3
[0039] A method for preparing water-soluble nitrogen, phosphorus and boron co-doped carbon quantum dots, comprising the following steps:
[0040] Step 1. Dissolve 0.1g of phenylphosphonic acid in 20mL of ultrapure water to obtain precursor solution I, and dissolve 0.1g of 3-aminophenylboronic acid in 20mL of ultrapure water to obtain precursor solution II, with a volume ratio of 3: 1 Uniformly mixing precursor solution I and precursor solution II to obtain a mixed solution;
[0041] Step 2. Stir the mixed solution prepared in step 1 evenly, put it into the polytetrafluoroethylene liner of the hydrothermal synthesis reaction kettle, and then place the hydrothermal synthesis reaction kettle in a constant temperature box for heating to obtain a light yellow solution. The temperature of the incubator is 180°C, and the reaction time is 6h;
[0042] Step 3, filter the light yellow solution obtained in step 2 to obtain the filtrate, then dialyze the filtrate, use a dialysis bag with...
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