Tuning CO2 electroreduction selectivity between C2+ and CH4 by Cu/Pr stoichiometry in atomically dispersed catalysts
Tuning CO2 electroreduction selectivity between C2+ and CH4 by Cu/Pr stoichiometry in atomically dispersed catalysts
研究概述
调节Cu/Pr比例，在Pr掺杂Cu单原子合金与PrOx中孤立Cu位点之间切换，实现CO2还原产物调控。富Cu体系促进*CO覆盖及C–C偶联，C2+法拉第效率最高75.4%；富Pr体系稳定*CH3中间体，CH4法拉第效率最高51.6%。
谱图与表征信息
Fig. 2. Characterization of chemical components of the catalysts. (a) XRD pattern of Cu, Cu6.86Pr, Cu3.27Pr and Cu0.12Pr powder. (b) Cu LMM spectra in Cu, Cu6.86Pr and Cu0.12Pr powder. (c) Cu K-edge XANES spectra of the Cu6.86Pr and Cu0.12Pr catalyst. (d) Cu K-edge FT-EXAFS spectra of the Cu6.86Pr and Cu0.12Pr catalyst. (e) Pr