Pt/CeO₂-C catalysts with CeO₂ pre-calcined at 300–600°C were synthesized by combining hydrothermal calcination and wet impregnation. The effects of the pre-calcined CeO₂ on the performance of Pt/CeO₂-C catalysts in methanol oxidation were investigated. The Pt/CeO₂-C catalysts with pre-calcined CeO₂ at 300–600°C showed an average particle size of 2.6–2.9 nm and exhibited better methanol electro-oxidation catalytic activity than the commercial Pt/C catalyst. In specific, the Pt/CeO₂-C catalysts with pre-calcined CeO₂ at 400°C displayed the highest electrochemical surface area value of 68.14 m²·g⁻¹ and I_f/I_b ratio (the ratio of the forward scanning peak current density (I_f) and the backward scanning peak current density (I_b)) of 1.26, which are considerably larger than those (53.23 m²·g⁻¹ and 0.79, respectively) of the commercial Pt/C catalyst, implying greatly enhanced CO tolerance.

通过将水热煅烧和湿法浸渍相结合，合成了在300–600°C下已预煅烧CeO _2的Pt / CeO ₂ -C催化剂。研究了预煅烧的CeO ₂对Pt / CeO ₂ -C催化剂甲醇氧化性能的影响。在300–600°C下具有预煅烧CeO ₂的Pt / CeO ₂ -C催化剂的平均粒径为2.6–2.9 nm，并且比市售Pt / C催化剂表现出更好的甲醇电氧化催化活性。具体而言，在400°C下具有预煅烧CeO ₂的Pt / CeO ₂ -C催化剂显示出最高的电化学表面积值68.14 m ² ·g^-1和I _f / I _b之比（前向扫描峰值电流密度（I _f）与后向扫描峰值电流密度（I _b）之比）为1.26，远大于（53.23 m ² ·g商用Pt / C催化剂分别为^-1和0.79），这意味着大大提高了CO耐受性。