Researchers at the Russian National Research University “Moscow Steel Institute†developed a nanoporous pore-forming technique on the surface of graphene sheets to enable the pore size of nanopores to be controlled. The successful development of this technology has opened up broader prospects for graphene applications. The corresponding results were published in the "Carbon" academic journal.
The researchers first theoretically studied the mechanism of nanopore pore formation on the surface of graphene flakes under accelerated ions and the relationship between pore size and ion energy. In the experiment, the graphene sheets were bombarded at different energies using ions of different mass elements such as carbon, oxygen, silicon, gold, iodine, krypton, and xenon. The ion bombardment energy is adjustable, and its maximum energy can reach 91 MeV. The experimental results show that the energy of the ions determines the pore size of the nanopores on the surface of the graphene sheet. The size of the nanopore pores can be set by adjusting the bombardment energy of the ions to change between 1-4 nm. The successful study of this achievement has taken an important step towards the specific structural orientation of graphene materials.
Now, researchers around the world of graphene materials are researching and exploring the process of controllable modification of graphene, including the method of generating defects in its structure, in order to change the microelectronic and conductive properties of graphene, and by induction It is magnetic. Russian researchers are refining the process to form controlled micropores on the surface of graphene sheets, which can be converted into semiconductor materials for use in the microelectronics industry.
Graphene with nanopores has broad application prospects in many fields, such as liquid purification, gene sequencing and the like.
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