Electrochemical N2 fixation to NH3 under ambient conditions: Mo2N nanorod as a highly efficient and selective catalyst.

Electrochemical N2 fixation to NH3 under ambient conditions: Mo2N nanorod as a highly efficient and selective catalyst.
Chem Commun (Camb). 2018 Jul 13;:
Authors: Ren X, Cui G, Chen L, Xie F, Wei Q, Tian Z, Sun X
Abstract
A highly attractive, but still a key challenge, is the development of earth-abundant electrocatalysts for efficient NH3 electrosynthesis via the N2 reduction reaction (NRR). In this communication, we report the development of a Mo2N nanorod as a highly efficient and selective NRR electrocatalyst for artificial N2 fixation in acidic electrolytes under ambient conditions. In 0.1 M HCl, this catalyst achieved a high Faradaic efficiency of 4.5% with a NH3 yield of 78.4 μg h-1 mgcat.-1 at -0.3 V vs. a reversible hydrogen electrode, thus outperforming most reported NRR electrocatalysts under ambient conditions and some under harsh conditions. Density functional theory calculations revealed that the free energy barrier of the potential determining step of NRR on MoO2 decreases dramatically after nitrogenization.
PMID: 30003198 [PubMed - as supplied by publisher]

Source: Chemical Communications - July 13, 2018 Category: Chemistry Authors: Ren X, Cui G, Chen L, Xie F, Wei Q, Tian Z, Sun X Tags: Chem Commun (Camb) Source Type: research