Assembly of Ring-Shaped Phosphorus within Carbon Nanotube Nanoreactors

Angew Chem Int Ed Engl. 2017 Feb 6;56(7):1850-1854. doi: 10.1002/anie.201611740. Epub 2017 Jan 11.

Abstract

A phosphorus allotrope that has not been observed so far, ring-shaped phosphorus consisting of alternate P8 and P2 structural units, has been assembled inside multi-walled carbon nanotube nanoreactors with inner diameters of 5-8 nm by a chemical vapor transport and reaction of red phosphorus at 500 °C. The ring-shaped nanostructures with surrounding graphene walls are stable under ambient conditions. The nanostructures were characterized by high-resolution transmission electron microscopy, scanning transmission electron microscopy, energy-dispersive X-ray spectroscopy, Raman scattering, attenuated total reflectance Fourier transform infrared spectroscopy, and X-ray photoelectron spectroscopy.

Keywords: allotropes; carbon nanotubes; nanoreactors; phosphorus; vapor-phase reactions.

Publication types

  • Research Support, U.S. Gov't, Non-P.H.S.
  • Research Support, Non-U.S. Gov't