1. Cent South Univ, Sch Mat Sci & Engn, Changsha 410083, Peoples R China
2. Cent South Univ, Sch Met & Environm, Changsha 410083, Peoples R China
折叠
Abstract
Electrocatalytic N-2 reduction reaction (NRR) serves as a promising approach for converting N-2 to NH3 in a sustainable way to replace the energy-intensive Haber-Bosch process. MoS2-based electrocatalysts hold great potentials in catalyzing N-2 reduction due to their similarity with active MoFe-co in biological nitrogenase. In this work, we reported a sulfur vacancy-rich MoS2 as an excellent electmcatalyst for NRR, where the sulfur vacancies (SVs) were easily controlled by regulating the amount of P dopants. MoS2 with abundant SVs (P-M-1) achieved a large NH3 yield rate of 60.27 mu g h(-1) mg(cat)(-1). and high Faradaic efficiency of 12.22% towards NRR. Further mechanistic study revealed that P dopants not only created SVs as the active centers but also modulated the electronic structure for the enhanced adsorption and activation of N-2 molecules, thus immensely promoting the catalytic performance of NRR.
NSTL
Elsevier