Method for preparing monodisperse carbon microspheres by using cane sugar as carbon source

Abstract

The invention discloses a method for preparing monodisperse carbon microspheres by using cane sugar as a carbon source. According to the method, cane sugar is used as the silicon source, sodium polyacrylate is used as a dispersing agent, and after the hydrothermal reaction at the certain temperature, the monodisperse micron-sized carbon sphere is obtained. A one-step hydrothermal method is adopted in the method for preparing the monodisperse carbon microspheres, and sodium polyacrylate is used as a dispersing agent, and has an important effect on the particle diameter, the dispersity and the surface appearance of the carbon microspheres; the carbon microspheres are solid and have relatively rough surfaces, and can obtain lots of aperture passages through simple high temperature processing; the obtained carbon sphere particle diameter range is 1-6 microns, and the carbon sphere particle diameter can be adjusted controllably through experimental parameters such as cane sugar concentration, the reaction temperature and the reaction time; the obtained carbon sphere can be applied to the fields of liquid chromatograph stationary phases, super capacitors, protein separation, enrichment and removal of organic matter in water, and the like.

Description

technical field [0001] The invention belongs to the field of preparation of new carbon materials, and in particular relates to a method for preparing monodisperse micron-scale carbon spheres with uniform particle size and good dispersion using sucrose as a carbon source. Background technique [0002] Carbon microspheres are a new type of carbon material with a spherical or nearly spherical shape and a particle size distribution on the order of nanometers or micrometers. Due to its advantages such as high strength, low density, good adsorption and electrical conductivity, it has attracted extensive attention. [0003] At present, the main methods for preparing carbon microspheres are: solvent (water) thermal method, chemical vapor deposition (CVD method), template method, mechanical ball milling method, ultrasonic method, arc discharge method, thermal condensation method, and emulsification method. Among them, the CVD method is a common method for preparing carbon microspher...

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Problems solved by technology

However, the reported hydrothermal method still has some limitations, such as a wide range of particle size distribution and frequent adhesion between spheres, etc., which is especially obvious in the preparation process of micron-sized carbon spheres.

[0005] At present, the method of preparing monodisperse micron-sized carbon spheres with different particle sizes in a controllable manner using sucrose as raw material and sodium polyacrylate as a dispersant has not been reported in the literature.

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