测试方法 | 结果 |
---|---|
X射线衍射(XRD) | 观察到Pt(111)晶面特征峰(2θ=39.8°),晶粒尺寸≈4.2 nm |
透射电镜(TEM) | 金属颗粒平均粒径5.1±0.8 nm,均匀分布于载体表面 |
X射线光电子能谱(XPS) | Pt 4f₇/₂结合能71.3 eV,表明金属态Pt占主导 |
在甲烷氧化反应中(CH₄ + 2O₂ → CO₂ + 2H₂O):
Story Source:
Materialsprovided byETH Zurich.Note: Content may be edited for style and length.
Journal Reference:
Jonas Koppe, Alexander V. Yakimov, Domenico Gioffrè, Marc-Eduard Usteri, Thomas Vosegaard, Guido Pintacuda, Anne Lesage, Andrew J. Pell, Sharon Mitchell, Javier Pérez-Ramírez, Christophe Copéret.Coordination environments of Pt single-atom catalysts from NMR signatures.Nature, 2025; 642 (8068): 613 DOI:10.1038/s41586-025-09068-x