论文成果
Rapid and large-scale synthesis of ultra-small immiscible alloy supported catalysts
- 发布时间：2023-10-19
- 点击次数：
- 关键字：HYDROGEN EVOLUTION REACTION; ENERGY-STORAGE; OXYGEN EVOLUTION; NANOPARTICLES; EFFICIENT; ELECTROCATALYSTS; CHALLENGES; NANOSHEETS; SHOCK; CO
- 摘要：It is an insurmountable challenge to synthesize carrier-supported ultra-small immiscible alloy catalyst with simple one-step method today. Here, we creatively report the first preparation of immiscible Ru-based alloys (RuRE-rGO NPs, RE=Gd, Er, Yb, La) with ~5 nm by solvent-free microwave reduction. Additionally, in alkaline electrocatalytic hydrogen evolution reaction (HER), RuGd-rGO NPs performed admirable (eta = 12 mV at 10 mA cm(-2), TOF=30.6 H-2 s(- 1) at 0.1 V), which also can be stable for 500 h even if it provides industry-related current density of 500 mA cm(-2). Density functional theory further indicates that from initial to final state of the reaction, RuGd-rGO NPs have large exothermic energy (-1.34 eV), while the dissociation energy barrier of H2O is relatively low, causing the most likely occurrence of HER. This work provides sufficient space for the synthesis of ultra-small immiscible nano-alloy supported catalysts.
- 卷号：304
- 期号：
- 是否译文：否
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