title: Aqueous oxidation reaction enabled layer-by-layer corrosion of semiconductor nanoplates into single-crystalline 2D nanocrystals with single layer accuracy and ionic surface capping.
abstract: A controllable aqueous oxidation reaction enabled layer-by-layer corrosion has been proposed to prepare high-quality two-dimensional (2D) semiconductor nanocrystals with single layer accuracy and well-retained hexagonal shapes. The appropriate oxidizing agent, such as H2O2, Fe(NO3)3, and HNO3, could not only corrode the layered-crystalline-structured Bi2Te3 nanoplates layer-by-layer to be a single quintuple layer, but also replace the organic barriers to be ionic ligands on the surface synergistically. AFM analysis was used to confirm the layer-by-layer exfoliation from the side to the center. Together with precise XRD, LRTEM and HRTEM characterizations, the controllable oxidation reaction enabled aqueous layer-by-layer corrosion mechanism has been studied.
authors.affiliation: Beijing Key Laboratory of Construction Tailorable Advanced Functional Materials and Green Applications, School of Materials Science and Engineering, Beijing Institute of Technology, Beijing, 100081, P. R. China. zhangjt@bit.edu.cn.
authors.forename: Muwei
authors.initials: M
authors.lastname: Ji
authors.affiliation: Beijing Key Laboratory of Construction Tailorable Advanced Functional Materials and Green Applications, School of Materials Science and Engineering, Beijing Institute of Technology, Beijing, 100081, P. R. China. zhangjt@bit.edu.cn.
authors.forename: Meng
authors.initials: M
authors.lastname: Xu
authors.affiliation: Institute of Semiconductors, Chinese Academy of Sciences, Beijing, 100083, P. R. China.
authors.forename: Jun
authors.initials: J
authors.lastname: Zhang
authors.affiliation: Beijing Key Laboratory of Construction Tailorable Advanced Functional Materials and Green Applications, School of Materials Science and Engineering, Beijing Institute of Technology, Beijing, 100081, P. R. China. zhangjt@bit.edu.cn.
authors.forename: Jiajia
authors.initials: J
authors.lastname: Liu
authors.affiliation: Beijing Key Laboratory of Construction Tailorable Advanced Functional Materials and Green Applications, School of Materials Science and Engineering, Beijing Institute of Technology, Beijing, 100081, P. R. China. zhangjt@bit.edu.cn.
authors.forename: Jiatao
authors.initials: J
authors.lastname: Zhang
mesh_terms: D003460:Crystallization; D007477:Ions; D046529:Microscopy, Electron, Transmission; D053758:Nanoparticles; D049329:Nanostructures; D010084:Oxidation-Reduction; D012666:Semiconductors; D014961:X-Ray Diffraction
chemical_list: D007477:Ions