Fang Yanyan, Wei Cong, Bian Zenan, Yin Xuanwei, Liu Bo, Liu Zhaohui, Chi Peng, Xiao Junxin, Song Wanjie, Niu Shuwen, Tang Chongyang, Liu Jun, Ge Xiaolin, Xu Tongwen, Wang Gongming
Department of Chemistry, University of Science and Technology of China, Hefei, 230026, China.
Institute of Solid State Physics, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, 230031, China.
Nat Commun. 2024 Feb 22;15(1):1614. doi: 10.1038/s41467-024-45873-0.
While Ru owns superior catalytic activity toward hydrogen oxidation reaction and cost advantages, the catalyst deactivation under high anodic potential range severely limits its potential to replace the Pt benchmark catalyst. Unveiling the deactivation mechanism of Ru and correspondingly developing protection strategies remain a great challenge. Herein, we develop atomic Pt-functioned Ru nanoparticles with excellent anti-deactivation feature and meanwhile employ advanced operando characterization tools to probe the underlying roles of Pt in the anti-deactivation. Our studies reveal the introduced Pt single atoms effectively prevent Ru from oxidative passivation and consequently preserve the interfacial water network for the critical H* oxidative release during catalysis. Clearly understanding the deactivation nature of Ru and Pt-induced anti-deactivation under atomic levels could provide valuable insights for rationally designing stable Ru-based catalysts for hydrogen oxidation reaction and beyond.
虽然钌对氢氧化反应具有优异的催化活性和成本优势，但在高阳极电位范围内催化剂失活严重限制了其替代铂基准催化剂的潜力。揭示钌的失活机制并相应地制定保护策略仍然是一个巨大的挑战。在此，我们开发了具有优异抗失活特性的原子级铂功能化钌纳米颗粒，同时采用先进的原位表征工具来探究铂在抗失活中的潜在作用。我们的研究表明，引入的铂单原子有效地防止了钌的氧化钝化，从而在催化过程中保留了关键的H*氧化释放的界面水网络。在原子水平上清楚地了解钌的失活本质和铂诱导的抗失活作用可为合理设计用于氢氧化反应及其他反应的稳定钌基催化剂提供有价值的见解。
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