Abstract Here, we study the electrocatalytic activity of Pt/C60(OH)x composite catalysts towards ethanol oxidation in acid media. The Pt nanoparticles were deposited onto the various polyhydroxy fullerenes (C60(OH)x) supports synthesized in this study (x varying from 8 to 36). Among all the Pt/C60(OH)x composites, the Pt/C60(OH)24–27 displays the highest specific activity and the lowest ethanol oxidation onset potential. Chronoamperometric tests reveal that the Pt/C60(OH)24–27 is the most stable catalyst during ethanol oxidation, reaching current densities 2-fold higher than the commercial Pt/C catalyst. In situ FTIR results point that the Pt/C60(OH)24–27 catalyst is more efficient in breaking the C C bond than the commercial catalyst. The improved catalytic activity of this material may be due to the ability of fullerenol to produce reactive oxygen species. In summary, the developed catalysts are promising alternatives for low-temperature fuel cells.

中文翻译：

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多羟基富勒烯：Pt 电催化剂乙醇氧化的有效载体

摘要 在这里，我们研究了 Pt/C60(OH)x 复合催化剂在酸性介质中对乙醇氧化的电催化活性。Pt 纳米粒子沉积在本研究中合成的各种多羟基富勒烯 (C60(OH)x) 载体上（x 从 8 到 36）。在所有 Pt/C60(OH)x 复合材料中，Pt/C60(OH)24-27 显示出最高的比活性和最低的乙醇氧化起始电位。计时电流测试表明，Pt/C60(OH)24-27 是乙醇氧化过程中最稳定的催化剂，其电流密度是商业 Pt/C 催化剂的 2 倍。原位 FTIR 结果表明 Pt/C60(OH)24-27 催化剂在破坏 CC 键方面比商业催化剂更有效。这种材料改进的催化活性可能是由于富勒烯醇产生活性氧的能力。总之，开发的催化剂是低温燃料电池的有前途的替代品。