1 research outputs found
Ru-Doped Ultrasmall Cu Nanoparticles Decorated with Carbon for Electroreduction of Nitrate to Ammonia
Electrocatalytic nitrate reduction reaction offers a
sustainable
approach to treating wastewater and synthesizing high-value ammonia
under ambient conditions. However, electrocatalysts with low faradaic
efficiency and selectivity severely hinder the development of nitrate-to-ammonia
conversion. Herein, Ru-doped ultrasmall copper nanoparticles loaded
on a carbon substrate (Cu–Ru@C) were fabricated by the pyrolysis
of Cu-BTC metal–organic frameworks (MOFs). The Cu–[email protected]
catalyst exhibits a high faradaic efficiency (FE) of 90.4% at −0.6
V (vs RHE) and an ammonia yield rate of 1700.36 μg h–1mgcat.–1 at −0.9 V (vs RHE).
Moreover, the nitrate conversion rate is almost 100% over varied pHs
(including acid, neutral, and alkaline electrolytes) and different
nitrate concentrations. The remarkable performance is attributed to
the synergistic effect between Cu and Ru and the excellent conductivity
of the carbon substrate. This work will open an exciting avenue to
exploring MOF derivatives for ambient ammonia synthesis via selective
electrocatalytic nitrate reduction