Chemical Intercalation of Zerovalent Metals Into 2D Layered Bi2se3 Nanoribbons † † ‡ † † † § Kristie J
Article pubs.acs.org/JACS Chemical Intercalation of Zerovalent Metals into 2D Layered Bi2Se3 Nanoribbons † † ‡ † † † § Kristie J. Koski, Colin D. Wessells, Bryan W. Reed, Judy J. Cha, Desheng Kong, and Yi Cui*, , † Department of Materials Science and Engineering, Stanford University, Stanford, California 94305, United States ‡ Physical and Life Sciences Directorate, Lawrence Livermore National Laboratory, 7000 East Avenue, Livermore, California 94550, United States § SLAC National Accelerator Laboratory, Stanford Institute for Materials and Energy Sciences, 2575 Sand Hill Road, Menlo Park, California 94025, United States *S Supporting Information ABSTRACT: We have developed a chemical method to intercalate a variety of zerovalent metal atoms into two-dimen- sional (2D) layered Bi2Se3 chalcogenide nanoribbons. We use a chemical reaction, such as a disproportionation redox reaction, to generate dilute zerovalent metal atoms in a refluxing solution, which intercalate into the layered Bi2Se3 structure. The zerovalent nature of the intercalant allows superstoichiometric intercalation of metal atoms such as Ag, Au, Co, Cu, Fe, In, Ni, and Sn. We foresee the impact of this methodology in establishing novel fundamental physical behaviors and in possible energy applications. 1. INTRODUCTION Ni, and Sn. Some interesting effects that could arise with − 7−10 intercalation are superconductivity, such as in Cu Bi2Se3, Intercalation is the insertion of a guest species into a host 6 lattice. Intercalation into layered materials is essential to battery enhanced conductivity, or possibly opening a surface state gap electrodes, electrochromics, detergents, and solid lubricants and in topological insulator Bi2Se3. This method of zerovalent metal is important in exotic fundamental two-dimensional (2D) intercalation may also be extended to other layered materials.
[Show full text]