Maximizing the leverage induced by Pt-O-Ce(III) interface structure to facilitate the non-CO pathway for methanol oxidation reaction
Maximizing the leverage induced by Pt-O-Ce(III) interface structure to facilitate the non-CO pathway for methanol oxidation reaction
研究概述
在Pt表面构筑富Pt—O—Ce(III)界面，平衡*CHO吸附和快速氧化，促进甲醇氧化的非CO路径并缓解CO中毒。通过调节Ce(III)含氧区域覆盖度优化中间体吸附，同时保持后续*HCOOH去质子化动力学，展示直接甲醇燃料电池应用潜力。
谱图与表征信息
Fig. 3. Ce 3d (a) and Pt 4 f (b) spectra of PtCo/C and Ce-PtCo/C catalysts. Normalized XANES spectra (c) and Fourier-transformed EXAFS spectra (d) of PtCo/C and 2.5%Ce-PtCo/C catalysts at Pt L-edge. Curve-fitting analysis of EXAFS spectra of PtCo/C (e) and 2.5%Ce-PtCo/C (f) catalysts at the Pt L-edge. (g) Wavelet transform for the Pt L-edge EXAFS spectra of Pt foil, PtCo−1000/C and 2.5%Ce-PtCo/C catalysts.