A General Methodology for the Synthesis of Transition Metal Pnictide Nanoparticles from Pnictate Precursors and Its Application to Iron−Phosphorus Phases

Abstract

Nanoparticles of iron phosphide have been prepared through a new strategy involving the reductive annealing of nanoparticulate iron phosphate precursors cast onto atomically flat mica surfaces. This route appears to be general for a range of transition metals and pnicogens and avoids the use of highly toxic and pyrophoric agents such as Pn(SiMe₃)₃ (Pn = P, As), which are commonly employed in the synthesis of pnictide nanoparticles.