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Constructing Symmetry-Mismatched RuxFe3–xO4 Heterointerface-Supported Ru Clusters for Efficient Hydrogen Evolution and Oxidation Reactions
Nano Letters ( IF 9.6 ) Pub Date : 2024-01-12 , DOI: 10.1021/acs.nanolett.3c04690
Xueqin Mu 1 , Xingyue Zhang 2 , Ziyue Chen 2 , Yun Gao 3 , Min Yu 2 , Ding Chen 1 , Haozhe Pan 2 , Suli Liu 2, 4 , Dingsheng Wang 3 , Shichun Mu 1
Affiliation  

Ru-related catalysts have shown excellent performance for the hydrogen evolution reaction (HER) and hydrogen oxidation reaction (HOR); however, a deep understanding of Ru-active sites on a nanoscale heterogeneous support for hydrogen catalysis is still lacking. Herein, a click chemistry strategy is proposed to design Ru cluster-decorated nanometer RuxFe3–xO4 heterointerfaces (Ru/RuxFe3–xO4) as highly effective bifunctional hydrogen catalysts. It is found that introducing Ru into nanometric Fe3O4 species breaks the symmetry configuration and optimizes the active site in Ru/RuxFe3–xO4 for HER and HOR. As expected, the catalyst displays prominent alkaline HER and HOR performance with mass activity much higher than that of commercial Pt/C as well as robust stability during catalysis because of the strong interaction between the Ru cluster and the RuxFe3–xO4 support, and the optimized adsorption intermediate (Had and OHad). This work sheds light on a promsing approach to improving the electrocatalysis performance of catalysts by the breaking of atomic dimension symmetry.

中文翻译:


构建对称不匹配的 RuxFe3–xO4 异质界面支持的 Ru 团簇以实现高效的析氢和氧化反应



钌相关催化剂在析氢反应(HER)和氢氧化反应(HOR)方面表现出优异的性能;然而,对氢催化纳米级异质载体上钌活性位点的深入了解仍然缺乏。在此,提出了点击化学策略来设计Ru簇装饰的纳米Ru x Fe 3– x O 4异质界面(Ru/Ru x Fe 3– x O 4 )作为高效双功能氢催化剂。研究发现,将Ru引入纳米Fe 3 O 4物种打破了对称构型,优化了Ru/Ru x Fe 3– x O 4中HER和HOR的活性位点。正如预期的那样,由于 Ru 团簇与 Ru x Fe 3– x O 4之间的强相互作用,该催化剂表现出突出的碱性 HER 和 HOR 性能,质量活性远高于商业 Pt/C,并且在催化过程中具有强大的稳定性。载体,以及优化的吸附中间体(H ad和 OH ad )。这项工作揭示了一种通过打破原子尺寸对称性来提高催化剂电催化性能的有前景的方法。
更新日期:2024-01-12
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