Boosting electrochemical nitrate-ammonia conversion via organic ligands-tuned proton transfer

Regulating active hydrogen adsorbed on grain boundary defects of nano-nickel for boosting ammonia electrosynthesis from nitrate

“…20,31,32 However, the NitRR process relies heavily on H* which is produced from H 2 O splitting. 12,33,34 The conversion efficiency of nitrate into ammonia will not be promoted significantly if the water splitting has been severely suppressed, as it cannot provide enough H* for the NitRR. To solve this problem, a strategy has been developed which introduces new elements (such as Rh and Au) to ensure the acquisition of enough H* but avoid massive H* production in order to suppress the HER, thus achieving a high NH 3 rate.…”

A Bi‐Co Corridor Construction Effectively Improving the Selectivity of Electrocatalytic Nitrate Reduction toward Ammonia by Nearly 100%

“…[ 48 ] The weak peak appearing at 1049 cm −1 represents *NO 3 − , whose intensity decreases with the increase of potential, indicating that *NO 3 − will be rapidly transformed with the increase of potential. [ 60 ] The peak near 1591 cm −1 represents *NH 3 , and the overall peak strength is in a weak state, meaning that the NH 3 generated can be detached in time, which is conducive to rapid and continuous NO 3 RR. [ 48 ] Figure 4g shows the in situ Raman spectra for NO 3 RR of Co+Bi@Cu NW changing with time at −0.6 V versus RHE.…”

A robust strategy to boost the proton transfer of heterogeneous catalysts for efficient and sustainable water oxidation towards practical applications

“…Recently, we found that the incorporation of uncoordinated carboxylate ligands with high proton affinity could significantly promote the proton transfer of the Cu-catalyzed nitrate reduction reaction (NO 3 − RR), thereby reducing the energy barrier and accelerating the overall reaction kinetics of NO 3 − RR. 49 Therefore, we believed that incorporating additional elements or organic groups with high proton affinity into the electrocatalysts may be a general strategy for boost the proton-coupled electron transfer of various electrocatalytic reactions.…”