Electrocatalytic Reduction of Nitrate to Nitrous Oxide by a Copper-Modified Covalent Triazine Framework
作者： Tatsuro Yoshioka , Kazuyuki Iwase , Shuji Nakanishi , Kazuhito Hashimoto , Kazuhide Kamiya
关键词: Denitrification 、 Metal 、 Triazine 、 Redox 、 Inorganic chemistry 、 Photochemistry 、 Covalent bond 、 Nitrous oxide 、 Electrochemistry 、 Nitrate 、 Chemistry
摘要: It was found that copper-modified covalent triazine frameworks (Cu-CTF) efficiently catalyze the electrochemical reduction of nitrate and promote N–N bond formation nitrous oxide (N2O), a key intermediate for N2 (denitrification). A Cu-CTF electrode exhibited an onset potential −50 mV versus RHE reaction (NRR). The faradaic efficiency N2O by reached 18% at −200 RHE, whereas Cu metal negligible. On basis density functional calculations Cu-CTF, both solvated surface-bound nitric (NO) were generated NRR due to moderate adsorption strength atoms NO, property facilitated effective dimerization NO through Eley–Rideal-type mechanism.
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