.jpg)
COLLOIDAL SYNTHESIS OF ANISOTROPIC 2D ANISOTROPIC BISMUTH
PCT/ES2022/070492
The invention is a colloidal synthesis method for obtaining 2D bismuth crystals, based on a photocatalytic reduction of an organometallic Bi(III) complex. This synthesis method allows obtaining a 2D bismuth material, also called bismuthene. The lamellar structure of this material is formed by two outer layers of organic molecules containing sulphur atoms and an inner layer formed by a crystal lattice of Bi(0) atoms. These structures have interesting features for energy storage, medical, catalysis, topological properties and other applications.
Applications: Some examples of applications for 2D bismuth are: - Energy, as an electrode in sodium ion batteries. - Medicine, as a contrast agent. - Electronic applications, as a material with topological properties. - Chemical catalysis, as part of the structure in porous materials. Advantages: The main advantages of this new synthesis method for bismuth 2D lamellar materials are: - Simplicity and ease of production of ultrathin lamellar materials. - It allows controlling the size, thickness and plane orientation of the crystals obtained. - Scalability, it allows obtaining 2D bismuth crystals in large quantities with reproducible characteristics and properties. In addition, the resulting material, bismuthene, has several advantages over other laminar materials of group 15 elements, such as: - High stability against oxidation. - It allows the incorporation of functional groups to its structure, allowing the possibility of new properties and functionalities.