Kinetics and mechanism effects of 2D carbon supports in hydrogen spillover composites

Han, Lu; Song, Pengfei; Zhang, Rui; Zhu, Liuyan; Wang, Lijiang; Shen, Xingxing; Shen, Sibo

doi:10.1039/d3nr03268j

Nanoscale

2023

DOI: 10.1039/d3nr03268j

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Kinetics and mechanism effects of 2D carbon supports in hydrogen spillover composites

Lu Han,

Pengfei Song,

Rui Zhang

et al.

Abstract: Extensive research has used two-dimensional (2D) carbon materials as catalyst supports to achieve high-performance hydrogen storage composites through the hydrogen spillover phenomenon. However, the kinetics and mechanism effects of different...

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Contribution of Carbon Clusters to Ammonia Synthesis Over Ru‐Based Catalysts

Zhang,

Luo,

Peng

et al. 2024

Adv Funct Materials

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Ammonia (NH3) plays an important role in the development and evolution of Earth's life system. The extremely high bond energy (941 kJ mol−1) of N2 hinder the conversion of N2 to NH3 under mild conditions. Meanwhile, clearly identifying the distribution of intermediates for NH3 synthesis remains a huge challenge in the experiment. Herein, we anchored carbon clusters (C60 or C70) onto Ru catalysts supported on rare earth oxides, forming a class of Ru‐carbon cluster co‐catalysts that exhibit strong electronic metal‐carbon cluster interaction (EMCI). Carbon clusters function as an electron buffer that induced electron uptake from metallic Ru sites and concurrently provides electron feedback to Ruδ+ in a reversible manner, achieving a flexible balance of electron density at the Ru active sites. Moreover, H‐affinitive carbon clusters serve as the site for the adsorption, activation and migration of hydrogen. With Ru and carbon clusters synergistically bridged by hydrogen spillover, the Ru‐C60 co‐catalyst exhibits an exceptionally high NH3 synthesis rate and remarkable stability. Experimental provides direct evidence of the distribution and evolution of *N2Hx (x = 1∼3) intermediates, with the hydrogenation of *NH2 to form *NH3 identified as the rate‐determining step. This work paves the way for utilizing carbon clusters in important chemical reactions.

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Contribution of Carbon Clusters to Ammonia Synthesis Over Ru‐Based Catalysts

Zhang,

Luo,

Peng

et al. 2024

Adv Funct Materials

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show abstract

AI-driven development of high-performance solid-state hydrogen storage

Wang,

Luo,

Desta

et al. 2025

Energy Reviews

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Kinetics and mechanism effects of 2D carbon supports in hydrogen spillover composites

Abstract: Extensive research has used two-dimensional (2D) carbon materials as catalyst supports to achieve high-performance hydrogen storage composites through the hydrogen spillover phenomenon. However, the kinetics and mechanism effects of different...

Cited by 2 publications

References 50 publications

Contribution of Carbon Clusters to Ammonia Synthesis Over Ru‐Based Catalysts

Contribution of Carbon Clusters to Ammonia Synthesis Over Ru‐Based Catalysts

AI-driven development of high-performance solid-state hydrogen storage

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