Simple Preparation and Formation Mechanism of Two-Dimensional Nanomaterials at Room Temperature

Abstract

Two-dimensional (2D) nanomaterials have been and continue to be of great interest to researchers since the experimental discovery of graphene. A reason for their very interesting properties is the large number of surface atoms with unsaturated bonds thus providing special properties to these materials. Rational fabrication of these materials is the first step towards their commercial application. Advance in this area has been promoted by the development of various synthesis strategies, especially wet-chemical synthesis with great potential in large-scale production and wide applicability. However, the existing wet-chemical methods suffer from high cost, tedious operation, low product quality and eco-unfriendly processing, motivating researchers to propose a simple and universal synthesis route. Besides, the performance improvement of 2D materials by tuning the thickness, composition, crystal phase and arrangement of nanosheets, is in the same predicament. This dissertation presents new synthetic methods to solve the above-mentioned problems, making a significant contribution to the fundamental research and practical application of 2D nanomaterials.