Built-in Electric Field Enables Relay Catalysis in Ni4Mo/MoO2 Mott-Schottky Heterojunction for Selective Methanol-to-Formate Electrooxidation
Built-in Electric Field Enables Relay Catalysis in Ni4Mo/MoO2 Mott-Schottky Heterojunction for Selective Methanol-to-Formate Electrooxidation
研究概述
在Ni4Mo/MoO2 Mott–Schottky异质结中，以内建电场形成缺电子Ni及富电子MoO2界面，分别促进甲醇中间体脱氢及*OH供应，实现接力催化。XAFS等谱学与计算支持该机制；峰值电流345.2 mA/cm²，甲酸盐法拉第效率超过97%。
谱图与表征信息
Figure 2 XPS spectra of Ni4Mo, MoO2, and NMO-500 for Ni 2p (a), Mo 3d (b), O 1 s (c). Ni K-edge XANES spectra (d), and Ni K-edge FT-EXAFS curves (e) of Ni foil, Ni4Mo, and NMO-500. Mo K-edge XANES spectra (f), and Mo K-edge FT-EXAFS curves (g) of Mo foil, Ni4Mo, MoO2, and NMO-500. WT-EXAFS images of Ni foil (h), Ni4Mo (i), and NMO-500 (j).