宝子们，今天要给大家分享一个超酷的科研成果——氧化亚铜/石墨炔（Cu₂O/GDY）电催化剂！大家都知道氨在生产里超重要，电催化还原硝酸盐又是生产氨的关键。而这个新型催化剂就是科研人员的智慧结晶它是把氧化亚铜/石墨炔长在有多孔结构的铜基底上。这个多孔结构就像一个高级“魔法道具”，能增加活性位点数量，还能让物质传输更顺畅，给反应提供了超棒的条件更厉害的是，氧化亚铜和石墨炔之间的sp - C–Cu键，就像给电子按了“加速键”，让电荷快速转移，直接把电子送到反应中间产物那里。在常温的水溶液里，只要施加 - 1.8 V（相对于饱和甘汞电极）的电压，这个催化剂就能疯狂产氨。氨生成速率能达到652.82 µmol h⁻¹ cm⁻²，法拉第效率高达82.98%，这数据简直绝了这项研究给原位制备自支撑异质结构提供了新方法，让常温高效生产氨不再是梦！科研的力量太强大啦，期待它未来在氨生产领域大放异彩

期刊

ChemPhysMater

标题

Self-supported cuprous oxide/graphdiyne nanosheets array for efficient ammonia synthesis

作者

Jiayu Yan, Fanle Bu, Lu Qi, Shuya Zhao, Zhaoyang Chen, Yurui Xue

摘要

Electrocatalytic reduction of nitrates plays a crucial role in ammonia (NH3) production. In this study, a novel cuprous oxide/graphdiyne (Cu2O/GDY) electrocatalyst was synthesized by growing Cu2O/GDY on a Cu substrate with a porous architecture capable of increasing the number of active sites and enhancing mass transfer ability. The sp-C–Cu bonds between Cu2O and GDY facilitate rapid charge transfer and promote direct electron transport from active sites to reaction intermediates. Consequently, the electrocatalyst exhibits high NH3 production performance with a yield rate (YNH3) of 652.82 µmol h−1 cm−2 and Faradaic efficiency of 82.98% at −1.8 V (vs. SCE) under ambient conditions in an aqueous solution. This work introduces a novel and efficient approach for the in situ fabrication of self-supported heterostructures, thereby enabling high-performance ammonia production under ambient conditions.

原文链接

https://www.sciencedirect.com/science/article/pii/S2772571525000105

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