Vanadium Diboride (VB₂) for NO Electroreduction to NH₃

Abstract

We report VB2 as an efficient electrocatalyst for NO-to-NH3 electroreduction (NORR), showing the highest NH3-Faradaic efficiency of 89.6% with the corresponding NH3 yield rate of 198.3 μmol h–1 cm–2 at −0.5 V vs RHE. Theoretical calculations demonstrate that B sites of VB2 act as the key active centers which can facilitate the NORR protonation energetics and inhibit the competitive hydrogen evolution, boosting both NORR activity and selectivity.

Screening of Transition Metal Supported on Black Phosphorus as Electrocatalysts for CO2 Reduction

“…Following the unveiling of single-atom catalysts (SACs) in 2011, with the exemplar of a single Pt atom doped onto iron oxide showcasing extraordinary catalytic prowess in CO oxidation . This breakthrough has garnered widespread attention and has been applied in various fields of electrocatalysis, including nitrogen reduction reaction (NRR), , hydrogen evolution reaction (HER), , and nitric oxide reduction reaction (NORR). − SACs characterized by their distinct single-atom coordination environments with unsaturated features facilitate enhanced adsorption of reactants and intermediates, thereby delivering heightened activity, selectivity, and optimal atom utilization. A notable example includes the deployment of single copper atoms on carbon nanotubes, which demonstrate exceptional catalytic efficiency in CO 2 RR .…”

Electrocatalytic NO reduction to NH3 over TiS2 nanosheets

“…17 However, the complicated five-electron transfer reaction and the intense HER seriously compromise the NORR efficiency 18–23 , and thus exploring high-performing electrocatalysts for simultaneously boosting the NORR and suppressing the HER is of high importance. 24–28…”

“…17 However, the complicated fiveelectron transfer reaction and the intense HER seriously compromise the NORR efficiency [18][19][20][21][22][23] , and thus exploring highperforming electrocatalysts for simultaneously boosting the NORR and suppressing the HER is of high importance. [24][25][26][27][28] Currently, many noble metals and cost-effective transition metal compounds are extensively developed towards the NORR. [29][30][31][32][33][34] Among them, transition metal sulfides (TMSs) are most attractive for the NORR due to their layered morphology, tunable electronic structure, high chemical stability and low cost.…”