Issue 7, 2024

Few-layer black phosphorus enables nitrogen fixation under ambient conditions

Abstract

Nitrogen (N2) fixation is a key reaction in biological and industrial chemistry, which does not occur spontaneously under ambient conditions but often depends on very specific catalysts and harsh reaction processes. Here we show that exposing exfoliated black phosphorus to the open air triggers, concomitantly, the oxidation of the two-dimensional (2D) material and the fixation of up to 100 parts per million (0.01%) of N2 on the surface. The fixation also occurs in pristine non-exfoliated material. Besides, other allotropic forms of phosphorus, like red P, also fixes N2 during ambient oxidation, suggesting that the N2 fixation process is intrinsic with phosphorus oxidation and does not depend on the chemical structure or the dimensionality of the solid. Despite the low amounts of N2 fixed, this serendipitous discovery could have fundamental implications on the chemistry and environmental stability of phosphorous and the design of related catalysts for N2 fixation.

Graphical abstract: Few-layer black phosphorus enables nitrogen fixation under ambient conditions

Supplementary files

Article information

Article type
Paper
Submitted
27 Okt 2023
Accepted
29 Jan 2024
First published
05 Feb 2024
This article is Open Access
Creative Commons BY license

RSC Adv., 2024,14, 4742-4747

Few-layer black phosphorus enables nitrogen fixation under ambient conditions

F. Garnes-Portolés, V. Lloret, J. A. Vidal-Moya, M. Löffler, K. J. J. Mayrhofer, J. P. Cerón-Carrasco, G. Abellán and A. Leyva-Pérez, RSC Adv., 2024, 14, 4742 DOI: 10.1039/D3RA07331A

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