A Pt-doped ceria nanocomposite with controlled morphology was prepared by one-pot hydrothermal synthesis method. The crystalline structure, texture and metal dispersion of the novel Pt@CeO₂ sample were studied by powder XRD, TEM, XPS, H₂-TPR, N₂-adsorption and CO chemisorption. The catalyst preparation procedure under hydrothermal conditions had significant impact on the Pt nanoparticles growth rate. Highly dispersed Pt species can be sufficiently anchored on the surface of nanopolyhedral CeO₂. The nanopolyhedral Pt@CeO₂ catalyst exhibits excellent catalytic activity for the water-gas shift reaction, suggesting an intimate interaction between Pt nanoparticles and nanopolyhedral CeO₂ that promotes the generation of additional active sites.

采用一锅法水热合成法制备了形貌可控的Pt掺杂二氧化铈纳米复合材料。@的CeO新颖的Pt的结晶结构，质地和金属分散₂样品通过粉末XRD，TEM，XPS，H研究₂ -TPR，N ₂ -adsorption和CO化学吸附。在水热条件下的催化剂制备过程对Pt纳米颗粒的生长速率有重大影响。高度分散的Pt物种可以充分锚固在纳米多面体CeO ₂的表面上。纳米多面体Pt @ CeO ₂催化剂对水煤气变换反应具有出色的催化活性，表明Pt纳米颗粒与纳米多面体CeO ₂之间存在密切的相互作用 促进其他活动网站的产生。