Research progress on preparation by exfoliation method and surface modification of boron nitride nanosheets
GAO Xiaohong
WANG Yanming
FENG Huixia
Abstract：The methods of producing boron nitride nanosheet(BNNS)by using hexagonal boron nitride(h-BN)powder as raw material were reviewed.The influence mechanism of raw material particle size,solvent,ultrasonic power,amount of grinding ball,additives and pretreatment technology on the preparation of BNNS was summarized.The surface modification methods of h-BN and BNNS were summarized,and the mechanism,advantages and disadvantages of covalent and non-covalent modification methods were summarized.Compared with chemical,liquid phase,mechanical and supercritical exfoliation methods,the medium-enhanced liquid phase exfoliation method is more simple,efficient and suitable for industrial batch production due to the π-π conjugation and lip-lip interaction between h-BN layers.However,it is necessary to select appropriate exfoliation additives and further reveal the mechanism of the exfoliation process.Due to the chemical inertia and local conjugation of B and N atoms in the h-BN structure,pure h-BN and BNNS are difficult to be directly modified by the covalent modification method based on chemical reactions.The non-covalent modification method of h-BN and BNNS is simple to operate,but the non-covalent modification method based on physical action has weak binding force and is easy to fail under harsh conditions such as high temperature and strong acid base.
Keywords：boron nitride nanosheetsexfoliation methodsurface modification
Publication Date：2023-02-25
Online Publishing Date：2026-05-22(First online date of this platform, not the publication date of the document)
Pages：11( 115-125 )