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

Abstract

Electrochemical NO-to-NH3 conversion (NORR) offers a promising pathway to achieve both harmful NO treatment and effective NH3 electrosynthesis. Main group p-block metal catalysts are promising NORR candidates but remain largely...

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

“…The charge-density difference map (Figure b) shows a remarkable charge transfer (−0.84 |e|) from the bridge Pd site to *NO 3 for effective NO 3 – activation. Meanwhile, both charge accumulation and depletion occur on *NO 3 , suggesting that the bridge Pd site polarizes *NO 3 via a charge “donation–back-donation” mechanism. − In addition, the corresponding partial density of states analysis (Figure S12) displays a pronounced hybridization between the *NO 3 p and Pd d orbitals, indicating a strong Pd–*NO 3 interaction and further confirming the powerful NO 3 – activation on the bridge Pd site of PdP 2 (011). − …”

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.…”

Palladium metallene for nitric oxide electroreduction to ammonia

“…These results demonstrate that Pd can effectively absorb and activate NO on its hcp site through a mixed pathway with a low energy barrier. Considering that the HER is the major competitive reaction for the NORR, [44][45][46][47][48] we further evaluate the competitive adsorption of NO and H on the hcp site of Pd. Fig.…”