Leveraging Interfacial Electric Field for Smart Modulation of Electrode Surface in Nitrate to Ammonia Conversion.

ABSTRACT: The efficiency of nitrate reduction reaction (NO₃RR) at low nitrate concentration is predominantly hindered by the poor affinity of nitrate ions and competitive hydrogen evolution reaction (HER), particularly in neutral and acidic media. Here, an innovative strategy to leverage the interfacial electric field (IEF) is introduced to boost the NO₃RR performance. By in situ constructing tannic acid-metal ion (TA-M²⁺) crosslinked structure on the electrode surface, the TA-M²⁺-CuO NW/Cu foam sample exhibits an exceptional Faraday efficiency of 99.4% at -0.2 V versus reversible hydrogen electrode (RHE) and 83.9% at 0.0 V versus RHE under neutral and acidic conditions, respectively. The computational studies unveil that the TA-Cu²⁺ complex on

SUBMITTER: Zhang K 

PROVIDER: S-EPMC11775551 | biostudies-literature | 2025 Jan

REPOSITORIES: biostudies-literature