Hollow submicron nitrogen-doped carbon tube and preparation method thereof
A nitrogen-doped carbon and sub-micron technology, which is applied in the preparation/purification of carbon, nano-carbon, carbon nanotubes, etc., to achieve the effects of simple preparation method, improved yield and low cost
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Embodiment 1
[0026] A preparation method for hollow submicron nitrogen-doped carbon tubes, specifically comprising the following steps:
[0027] Step 1: Weigh 60 mg of 9,10-dicyanoanthracene and dissolve it in 12 mL of ethanol to obtain solution A; weigh 20 mg of sodium lauryl sulfate and dissolve it in 800 mL of deionized water to obtain solution B. Add solution A dropwise to solution B while stirring, the volume ratio of solution A to solution B is 1:7, react for 10min, let stand, filter, and dry to obtain a self-assembled organic structure, such as figure 1 shown;
[0028] Step 2: Dissolve 50 mg of the self-assembled organic structure in 200 mL of Tris buffer solution with pH=8.5, and disperse by ultrasonic. Then 10mg of dopamine was added, and the reaction was stirred for 6h. filtering, washing, and drying to obtain polydopamine-coated self-assembled organic structures;
[0029] Step 3: The polydopamine-coated self-assembled organic structure was placed in a tube furnace and calcine...
Embodiment 2
[0031] In Step 3 of Example 1, "calcination at 500°C for 1 hour" was changed to "calcination at 1000°C for 12 hours", and the rest of the steps were the same as in Example 1 to prepare hollow submicron nitrogen-doped carbon tube sample 2. Scanning electron microscopy found that the width surface of the obtained hollow submicron nitrogen-doped carbon tubes is smoother, indicating that increasing the carbonization temperature and prolonging the carbonization time are conducive to the formation of graphitized structures.
Embodiment 3
[0033] A preparation method for hollow submicron nitrogen-doped carbon tubes, specifically comprising the following steps:
[0034] Step 1: Dissolve 30 mg of 9,10-dibromoanthracene in 12 mL of dichloromethane to obtain solution A; weigh 20 mg of cetyltrimethylammonium bromide and dissolve it in 800 mL of deionized water to obtain solution B. Add solution A dropwise to solution B while stirring, the volume ratio of solution A to solution B is 1:7, react for 10 min, stand still, filter and dry to obtain self-assembled organic structure.
[0035] Step 2: Dissolve 50 mg of the self-assembled organic structure in 200 mL of Tris buffer solution with pH=8.5, and disperse by ultrasonic. Then 50mg of dopamine was added, and the reaction was stirred for 12h. Filter, wash, and dry to obtain polydopamine-coated self-assembled organic structures, such as figure 2 shown.
[0036] Step 3: The polydopamine-coated self-assembled organic structure was placed in a tube furnace and calcined a...
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