Heterogenous Cu@ZrO2 nanofibers enable efficient electrocatalytic nitrate reduction to ammonia under ambient conditions†
Qian
Liu, 
a
Tingshuai
Li
*b
a
Tingshuai
Li
*b
Abstract
In this study, we construct a Cu@ZrO2 heterogenous structure as a new catalyst that achieves a large NH3 yield of 15.4 mg h−1 mg−1cat. and a high faradaic efficiency of 67.6% at −0.7 V vs. RHE in 0.1 M PBS with 0.1 M NaNO3, and it also shows excellent electrochemical durability and structural stability. Theoretical calculations reveal an extremely low adsorption energy of −1.54 eV at Cu surfaces and Cu can significantly reduce the applied overpotential and correspondingly promote the catalytic activity.
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