Two-dimensional Hexagonal Boron Nitride Nanosheets Grown by Surfactant-added Exfoliation

Abstract

Recent advances in understanding graphene crystals in two-dimensional (2D) order have encouraged more researchers to work in the field of nanosheets. 2D materials have a regular structure. In these materials, atoms are contained within a single layer. There are no different layers with strong or weak bonds between them 1. The best known 2D material is graphene2 which is the thinnest material known to date, as a single layer of a carbon honeycomb weave. Based on composition and crystal structure, many other 2D materials are known to have been predicted and synthesized in the last decade 3-6. These materials have an ultra-thin layer structure but have different functions for different applications. Undoubtedly, because of the large number of 2D materials, their unique properties and their versatility, scientists and engineers have become interested in a wide range of research. Electronics, optoelectronics, energy storage and conversion, etc. are promising applications for 2D materials7. There are several methods for producing 2D materials. The best known is the micro mechanical division (MC)2 which uses Scotch tape to separate thin layers from bulk material. Chemical vapor deposition method (CVD) is a well-known method for synthesizing nanomaterials containing zero-dimensional (OD), one-and two-dimensional (1D and 2D) materials in large quantities based on the bottom-up production principle1. Because of the nature of the layered nanomaterials, that is, they have strong in-plane covalent bonds between the structural components and weak van der Waals interaction between the atomic layers, it is possible to directly synthesize 2D nanosheets by exfoliation method based on 3D crystals8