Stainless steel surface three-dimensional nanocarbon film and preparation method thereof

Abstract

The invention relates to a stainless steel surface three-dimensional nanocarbon film and a preparation method thereof. According to the technical schem, the preparation method comprises the following steps: firstly, performing electrochemical anode oxidation treatment on stainless steel in a sodium dihydrogen phosphate solution, wherein the surface of the stainless steel is pretreated; then under a stirring condition, placing the stainless steel subjected to electrochemical anode oxidation treatment in a mixed solution of dopamine and trihytdroxy methyl-aminomethane for 4-24 hours, taking out and cleaning; then raising to 500-800 DEG C from a room temperature at a temperature raising rate of 5-15 DEG C / min in an argon atmosphere, insulating heat for 3-10 hours, and naturally cooling with a furnace to obtain the stainless steel surface three-dimensional nanocarbon film. The stainless steel surface three-dimensional nanocarbon film has the characteristics of simple process, environment friendliness and low cost; and the stainless steel surface three-dimensional nanocarbon film is regular and ordered in structure, uniform in components, high in nano hole density, large in carbon film specific surface area, controllable in pore diameter, pore depth and carbon film thickness, and compact in combination with a base material, and does not involve other impurity elements. According to the stainless steel surface three-dimensional nanocarbon film, the stainless steel corrosion resistance performance, the high temperature resistance, the electrochemical sensing performance and the biological medicine performance can be improved.

Description

technical field [0001] The invention belongs to the technical field of nanometer materials. In particular, it relates to a three-dimensional nano-carbon film on the surface of stainless steel and a preparation method thereof. Background technique [0002] Carbon has different allotropes, different microstructures, different degrees of graphitization, different forms of existence and rich and diverse dimensions, so carbon materials are a class of new materials with great development and application prospects. Among them, carbon materials with nanopore arrays, due to their unique physical and chemical properties, include surface hydrophobicity, large specific surface area, high porosity, large pore volume, strong corrosion resistance, good mechanical stability, easy processing, excellent Thermal stability and chemical stability, as well as relatively low cost, make it have great advantages in the fields of chemical industry, biomedicine, environment and energy, etc. wide att...

AI Technical Summary

Problems solved by technology

However, there are the following problems in the process of preparing carbon film by carbonization: the carbonization temperature is too high, the structure and composition of the carbon film obtained by carbonization are not uniform, and the carbon film is brittle.