Amorphous NiB₂for electroreduction of NO to NH₃

Abstract

We explore amorphous NiB2 as a metal diboride catalyst towards the efficient Electroreduction of NO to NH3 (NORR), showing the highest NH3 yield rate of 167.1 μmol h-1 cm-2 and...

PdP2 Nanoparticles on Reduced Graphene Oxide: A Catalyst for the Electrocatalytic Reduction of Nitrate to Ammonia

“…Liquid and gas products were separately determined by colorimentric methods and gas chromatography, respectively (Figures S3 and S4). − The linear-sweep voltammetry (LSV) curves (Figure a) display that the current density ( j ) of PdP 2 /RGO in a NO 3 – -containing electrolyte is significantly higher than that in a NO 3 – -free electrolyte, suggesting that PdP 2 /RGO has a high catalytic NRA ability. To quantify the NRA activity of PdP 2 /RGO, we used chronoamperometry (Figure b) and the following colorimetric methods .…”

Atomically isolated and unsaturated Sb sites created on Sb2S3for highly selective NO electroreduction to NH3

“…[15][16][17][18][19][20] Transition metal-based catalysts commonly exhibit high NORR activity owing to their partially occupied d-orbitals boosting NO adsorption. [21][22][23][24][25][26][27] Nevertheless, d-orbitals also favor the formation of metal-H bonds to trigger the competitive HER, giving rise to low NORR selectivity. 28 Promisingly, main group p-block metals (Sb, In, Bi, etc.)…”

A metal-free catalyst for electrocatalytic NO reduction to NH3

“…[16][17][18] Nevertheless, the NORR conversion efficiency is restricted by the high NORR reaction energy barriers and fierce competition from the hydrogen evolution reaction (HER), 19 and it is necessary to explore high-performance electrocatalysts to promote the NORR while retarding the HER. [20][21][22] Currently, research on the NORR is mainly focused on precious metal and non-precious metal-based materials, [23][24][25][26][27][28][29][30][31][32][33][34][35] while metal-free catalysts still lack adequate exploration. It is known that there are only limited metal reserves on the Earth and the excess use of metal catalysts would largely increase the possibility of metal contamination and environmental pollution.…”

“…Currently, research on the NORR is mainly focused on precious metal and non-precious metal-based materials, 23–35 while metal-free catalysts still lack adequate exploration. It is known that there are only limited metal reserves on the Earth and the excess use of metal catalysts would largely increase the possibility of metal contamination and environmental pollution.…”