在富含缺陷的超薄RuCu合金纳米结构上通过安培级硝酸盐电还原促进海水淡化
Boosting Seawater Desalination by Ampere-Level Nitrate Electroreduction On Defect-Rich Ultrathin RuCu Alloy Nanostructures.
摘要(中文译文)
淡水稀缺与水体硝酸盐污染是两大日益严峻的环境问题。开发绿色可持续技术，以实现同时从海水中快速制备淡水并高效处理废水，至关重要但仍具挑战性。在此，我们报道了超薄合金纳米结构的缺陷工程用于高性能电催化硝酸盐还原反应（NORR），并将其进一步应用于驱动海水淡化。具体而言，富含缺陷的RuCu纳米花（D-RuCu NFs）在中性介质中对氨电合成表现出优异的选择性，并在流动池中具有良好的安培级运行稳定性。原位表征和理论计算表明，D-RuCu NFs的缺陷特征使其具有更多的电催化活性位点，并促进硝酸盐吸附及脱氧/加氢过程。作为概念验证应用，电化学NORR驱动的海水淡化实现了6033.05 µg cm min的超快脱盐速率，并实现了将天然海水淡化为饮用水的稳健长期稳定性。这项工作为硝酸盐转化与海水淡化同步进行提供了一种有效的可持续策略，在水-能源 nexus 中展现出巨大的实际应用潜力。
Abstract
Freshwater scarcity and nitrate pollution in water bodies are two growing environmental concerns. Developing green and sustainable techniques for simultaneous rapid freshwater production from seawater and efficient effluent treatment is crucial but remains challenging. Herein, we report the defect engineering of ultrathin alloy nanostructures for high-performance electrocatalytic nitrate reduction reaction (NORR), which is further applied to drive seawater desalination. In specific, defect-rich RuCu nanoflowers (D-RuCu NFs) demonstrate superior selectivity toward ammonia electrosynthesis in neutral media and good stability for ampere-level operation in flow cells. In situ characterizations and theoretical calculations indicate that defective features of D-RuCu NFs possess more active sites for electrocatalysis and facilitate the nitrate adsorption and deoxygenation/hydrogenation processes. As a proof-of-concept application, the electrochemical NORR driven seawater desalination delivers an ultrafast salt removal rate of 6033.05 µg cm min, as well as achieves robust long-term stability of desalinating natural seawater to drinking water. This work offers an effective sustainable strategy for simultaneous nitrate conversion and seawater desalination, suggesting great potential for practical application within the water-energy nexus.
如何引用
AMA
Juan Wang, Liang Guo, Qingbo Wa, Fengkun Hao, Fu Liu, Chaohui Wang, et al. Boosting Seawater Desalination by Ampere-Level Nitrate Electroreduction On Defect-Rich Ultrathin RuCu Alloy Nanostructures.. Advanced materials (Deerfield Beach, Fla.). 2026; doi:10.1002/adma.73146.
APA
Juan Wang, Liang Guo, Qingbo Wa, Fengkun Hao, Fu Liu, Chaohui Wang, et al (2026). Boosting Seawater Desalination by Ampere-Level Nitrate Electroreduction On Defect-Rich Ultrathin RuCu Alloy Nanostructures.. Advanced materials (Deerfield Beach, Fla.). https://doi.org/10.1002/adma.73146
GB/T 7714
Juan Wang, Liang Guo, Qingbo Wa, Fengkun Hao, Fu Liu, Chaohui Wang, et al. Boosting Seawater Desalination by Ampere-Level Nitrate Electroreduction On Defect-Rich Ultrathin RuCu Alloy Nanostructures.[J]. Advanced materials (Deerfield Beach, Fla.), 2026 doi:10.1002/adma.73146.
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