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硝酸盐/亚硝酸盐转化FeCoApplied Catalysis B: Environment and Energy

Interfacial Coupling Mediate Dual-Acceleration Strategy Enables Efficient Electrochemical Nitrate Reduction to Ammonia

Interfacial Coupling Mediate Dual-Acceleration Strategy Enables Efficient Electrochemical Nitrate Reduction to Ammonia

研究概述

构建FeCo–CeO2催化剂,通过Fe位点活化硝酸根、Co位点生成活性氢,实现硝酸盐还原及含氮中间体氢化的协同加速。−0.5 V下产氨速率0.84 mmol·h⁻¹·cm⁻²,−0.3 V下法拉第效率97.35%。作为锌–硝酸盐电池正极时,最大功率密度7.34 mW/cm²。

谱图与表征信息

图1 · 原文PDF第3页
Fig. 1. (a) HRTEM images of FeCo-CeO2. (b) Fe 2p XPS spectra of FeCo-CeO2 and Fe-CeO2. (c) Co 2p XPS spectra of FeCo-CeO2 and Co-CeO2. (d) Fe K-edge XANES spectra and (e) the corresponding FT k3-weighted EXAFS spectra for FeCo-CeO2, Fe Foil and Fe2O3. (f) Wavelet transform of Fe k-edge EXAFS of FeCo-CeO2. (g) Co K- edge XANES spectra and (h) the corresponding FT k3-weighted EXAFS spectra for FeCo-CeO2, Co Foil and Co3O4. (i) Wavelet transform of Co k-edge EXAFS of FeCo-CeO2.
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