Preparation method of hollow carbon nanospheres
A nano-carbon sphere and hollow technology, applied in the direction of nanotechnology, can solve the problems of cumbersome process and poor controllability, and achieve the effect of less process steps, short reaction time and rounded spheres
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[0027] The preparation method of hollow nano carbon spheres of the present invention includes the following steps:
[0028] s1. Provide a precursor of carbon nanospheres with a particle size of 100-1000nm;
[0029] s2. The precursor of the carbon nanospheres described in step s1 is fully ground and dispersed into a powder, and then the powder is spread in a crucible, and the crucible is placed in a muffle furnace for calcination to obtain a target product. The particle size of the target product is determined by the particle size of the precursor, which is 100-1000nm.
[0030] The calcination treatment conditions include: the calcination temperature is 300-800°C, the heating rate is above 2°C / min, the holding time is 0.2-12h, and the calcination atmosphere is air.
[0031] In the step s1, the preparation process of the carbon nanosphere template includes: using glucose as a carbon source to perform a hydrothermal reaction to obtain carbon nanospheres.
[0032] As one of the preferred s...
Example Embodiment
[0036] Example 1
[0037] s1. Take the precursor of the carbon nano spheres with a particle size of 100-150 nm, grind them in a mortar for more than 2 minutes, and disperse them into powder;
[0038] s2. Spread the above-mentioned nano carbon ball powder in a crucible, and place the crucible in a muffle furnace. In an air atmosphere, heat up to 450°C at a heating rate of 10°C / min and keep it for 60 minutes to obtain hollow nano-carbon ball.
[0039] figure 1 Shown is a transmission electron microscope photograph of the hollow carbon nanospheres obtained in Example 1. As can be seen from the figure, the diameter of the hollow carbon nanospheres is 140 nm and the wall thickness is about 44 nm.
Example Embodiment
[0040] Example 2
[0041] s1. Take the precursor of the carbon nano spheres with a particle size of 100-150 nm, grind them in a mortar for more than 2 minutes, and disperse them into powder;
[0042] s2. Spread the above-mentioned nano carbon ball powder in a crucible, and place the crucible in a muffle furnace. In an air atmosphere, heat up to 450°C at a heating rate of 10°C / min and hold for 90 minutes to obtain hollow nano-carbon ball.
[0043] figure 2 Shown is a transmission electron microscope photograph of the hollow carbon nanospheres obtained in Example 2. As can be seen from the figure, the diameter of the hollow carbon nanospheres is 132 nm and the wall thickness is about 29 nm.
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