在电化学CO转化氧化脉冲过程中对抗SnO的减少。
Countering reduction of SnO during electrochemical CO conversion oxidative pulsing.
作者信息
Arnouts Sven, Van Daele Kevin, Daems Nick, van der Veer Mathias, Bals Sara, Breugelmans Tom
机构信息
Applied Electrochemistry and Catalysis (ELCAT), University of Antwerp 2610 Wilrijk Belgium
Electron Microscopy for Materials Science (EMAT) and NANOlight, University of Antwerp 2020 Antwerp Belgium.
出版信息
Mater Adv. 2025 Jul 30;6(17):5857-5863. doi: 10.1039/d5ma00272a. eCollection 2025 Aug 26.
The application of periodic anodic pulses in CO electroreduction (p-eCOR) offers a promising route to counteract the inevitable reduction of metal oxide catalysts. This study demonstrates the first application of p-eCOR to a catalyst composed solely of a tin (oxide) active phase, using a pomegranate-structured SnO@C nanosphere. Periodic, prolonged anodic pulses (30 s) at 0.2 V RHE improved faradaic efficiency towards formate after 6 hours, retaining 78 ± 2% 71 ± 6% under potentiostatic conditions, suggesting p-eCOR can extend Sn-based catalyst lifetimes for more sustainable CO conversion.
在CO电还原（p-eCOR）中施加周期性阳极脉冲为抵消金属氧化物催化剂不可避免的还原提供了一条有前景的途径。本研究展示了p-eCOR首次应用于仅由锡（氧化物）活性相组成的催化剂，使用了石榴石结构的SnO@C纳米球。在0.2 V RHE下施加周期性的长时间阳极脉冲（30秒），6小时后提高了对甲酸盐的法拉第效率，在恒电位条件下保持在78±2%至71±6%，这表明p-eCOR可以延长基于Sn的催化剂寿命，以实现更可持续的CO转化。
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