Co-combustion preparation method of sulfur doped graphene quantum dot
A graphene quantum dot and sulfur doping technology, applied in nanotechnology and other directions, can solve the problems of single energy band structure of graphene quantum dots, and achieve the effects of excellent optoelectronic properties, uniform size and low price
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Embodiment 1
[0028] Example 1: A co-combustion preparation method of sulfur-doped graphene quantum dots, through the doping of heterogeneous sulfur atoms, to effectively modulate the structure and energy level of graphene quantum dots, thereby modulating the photoelectric properties of graphene quantum dots , the sulfur-doped graphene quantum dots are obtained by co-combustion, ultrasonic and other preparation methods:
[0029] (1) Co-combustion: take 5g of liquid paraffin and 1g of carbon disulfide with a straw, mix them evenly, put them into a clean pure white cotton wick bottle and ignite them, clamp a clean glass slide with tweezers at 25-30cm above the flame, collect and burn The sulfur-doped carbon nanospheres produced in the process, after the combustion is extinguished, all the sulfur-doped carbon nanospheres on the glass slide are collected;
[0030] (2) Ultrasonic liquid phase exfoliation: Add a dispersant to the sulfur-doped carbon nanospheres. The dispersant is N-methylpyrrolid...
Embodiment 2
[0032] Example 2: A co-combustion preparation method of sulfur-doped graphene quantum dots, through the doping of heterogeneous sulfur atoms, to effectively modulate the structure and energy level of graphene quantum dots, thereby modulating the photoelectric properties of graphene quantum dots , the sulfur-doped graphene quantum dots are obtained by co-combustion, ultrasonic and other preparation methods:
[0033] (1) Co-combustion: take 5g of liquid paraffin and 1g of carbon disulfide with a straw, mix them evenly, put them into a clean pure white cotton wick bottle and ignite them, clamp a clean glass slide with tweezers at 25-30cm above the flame, collect and burn The sulfur-doped carbon nanospheres produced in the process, after the combustion is extinguished, all the sulfur-doped carbon nanospheres on the glass slide are collected;
[0034] (2) Ultrasonic liquid phase exfoliation: Add a dispersant to the sulfur-doped carbon nanospheres. The dispersant is N-methylpyrrolid...
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