Method for preparing Y-shaped carbon nano tube by taking dimethyl sulfide as carbon source

Abstract

The invention relates to a method for preparing a Y-shaped carbon nano tube by taking dimethyl sulfide as the carbon source, which is characterized in that in the method, dimethyl sulfide is taken as the carbon source; cobalt nitrate and magnesium nitrate are taken as catalysts; deionized water is taken as a washing agent and a cleaner; dilute hydrochloric acid is taken as a centrifugal cleaner; anhydrous alcohol is taken as a cleaner; hydrogen is taken as carbon source carrier gas and cobalt oxide reducing gas; argon gas is taken as protective gas and a quartz boat is taken as a product growing body. The method comprises the following steps: the catalysts first undergo thermal decomposition reaction and hydrogen reduction and then are placed on the quartz boat; hydrogen is taken as the carbon source carrier gas; the dimethyl sulfide is input into a quartz tube and undergoes shape transformation, vapor deposition and product growth at the temperature of 1000 DEG C under the protection of argon gas and in the presence of catalysts from liquid state, gas state to solid state to generate the black hollow Y-shaped carbon nano tube. The method features short process flow and the product has regular morphology, high purity and stable chemical and physical property, diameter of 50-60nm, hollow diameter of 30-40nm, maximum length of 30000nm, carbon content of 98.9%, productivity as high as 83%.

Description

technical field [0001] The invention relates to a method for preparing Y-shaped carbon nanotubes by using dimethyl sulfide as a carbon source, and belongs to the technical field of synthesizing carbon nanotubes from organic compound carbon materials. Background technique [0002] Carbon nanotubes have a unique hollow structure and exhibit excellent properties in electricity, heat, optics, mechanics, etc., making them have broad application prospects in high-performance composite materials, catalytic materials, field emission nano-devices, sensors, etc. [0003] The outer shape of Y-shaped carbon nanotubes is like the English letter Y. In addition to the excellent properties of ordinary carbon nanotubes, it has its own unique properties and applications. For example, it can be used as nano-switches or transistors in nano-electronic devices. In general, Y-shaped carbon nanotubes have multidisciplinary potential research and application value, and belong to cutting-edge science...

AI Technical Summary

Problems solved by technology

[0004] At present, the methods for preparing Y-shaped carbon tubes include: laser evaporation, arc discharge and chemical vapor deposition; commonly used carbon source precursors are: acetylene, methane, ethanol, ethylene and toluene; although these methods can achieve Y type carbon nanotubes, but there are some defects and deficiencies in the preparation process, for example, some equipment is complicated, the process flow is long, it is difficult to master and control, and some products have large shape changes, unevenness, low product purity, and low yield. The rate is low, the cost is high, and it cannot meet the needs of the industrial field

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