Using a simple slow decomposition method of nitrate precursors, high-surface area platinum-doped ceria with a crystallite size of 9 nm can be prepared. The catalytic performance of the compound can be tuned by changing the reduction temperature under hydrogen (300 °C, 500 °C and 700 °C). The catalyst treated at 300 °C shows the best catalytic performance, being active at room temperature. The materials were analysed using a combination of structural characterization methods (X-ray diffraction (XRD), nitrogen physisorption, high angle annular dark field scanning transmission electron microscopy (HAADF-STEM)), surface sensitive methods (X-ray photoelectron spectroscopy (XPS), H₂-chemisorption and H₂-temperature-programmed reduction (TPR)) and X-ray absorption fluorescence spectroscopy (XAFS). HAADF-STEM and XAFS analysis suggests successful doping of platinum in the ceria lattice. After pretreatment at 300 °C, the situation is slightly different. While no defined platinum nanoparticles can be identified on the surface, some platinum is in a reduced state (XPS, H₂-chemisorption).

使用硝酸盐前体的简单缓慢分解方法，可以制备具有9 nm微晶尺寸的高表面积掺杂铂的二氧化铈。化合物的催化性能可以通过改变氢气（300°C，500°C和700°C）下的还原温度来调节。在300°C下处理的催化剂表现出最佳的催化性能，在室温下具有活性。使用结构表征方法（X射线衍射（XRD），氮物理吸附，高角度环形暗场扫描透射电子显微镜（HAADF-STEM）），表面敏感方法（X射线光电子能谱（XPS））对材料进行了分析），H _2-化学吸附和H ₂程序升温还原（TPR）和X射线吸收荧光光谱（XAFS）。HAADF-STEM和XAFS分析表明，在二氧化铈晶格中成功掺杂了铂。经过300°C的预处理后，情况略有不同。尽管在表面上没有确定的铂纳米颗粒，但一些铂处于还原状态（XPS，H _2-化学吸附）。