Colloidal synthesis of porous red phosphorus nanoparticles as a metal-free electrocatalyst for the hydrogen evolution reaction

Porous red phosphorus nanoparticles, P-RPNPs, were synthesized via a new colloidal approach and used as metal-free electrocatalysts in the hydrogen evolution reaction (HER). P-RPNPs were highly efficient in acidic media, required an overpotential of only 218 mV to reach 10 mA cm −2 , and exhibited superior long-term durability. Uniform porous red phosphorus nanoparticles (P-RPNPs) were synthesized via a one-pot hot injection approach for use as metal-free electrocatalysts in the hydrogen evolution reaction (HER).