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添加的NiFe-MIL-53具有促进重建和活性补充,用于增强酸盐减少

Huijiao Wang¹, Gening Du¹, Jinzhi Jia¹

¹State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, Gansu 730000, China.

Inorganic chemistry

|May 8, 2024

概括

研究人员开发了一种新的电催化剂,NiFeRu-MIL-53在Ni泡上,用于高效地将酸盐减少为氨 (NH3). 这种催化剂克服了缓慢的反应步骤,为能源和环境应用提供了高效率.

科学领域:

电化学电化学电化学
材料科学材料科学材料科学
环境化学环境化学

背景情况:

通过电化学方法将酸盐降解为氨 (NO3RR) 对于能源和环境应用至关重要.
这个过程受到缓慢的多电子/质子步骤和复杂的反应中间体的阻碍.
来自水分解的活性物种 (Hads) 起着关键作用.

研究的目的:

设计和合成一种用于高效NO3RR的新型电催化剂.
研究设计的电催化剂的催化活性和机制.
通过改进的酸盐减少来提高氨产量.

主要方法:

在泡 (NF) 上支持的 (Ru) 合的NiFe-MIL-53的合成.
电化学表征,包括循环电压测量和时测量.
在现场拉曼光谱分析催化剂结构和中间体.

主要成果:

在性介质中,NiFeRu-MIL-53表现出优异的NO3RR活性.
在 -0.4 V 和 RHE 之间,对于氨 (NH3) 达到 100% 的最大法拉戴克效率.
在 -0.7 V 和 RHE 之间,达到 62.39 mg h−1 cm−2 的最大 NH3 产量.
鲁化促进了水分离,并为化提供了最佳的Hads.

结论:

Ru和重建的NiFe (OH) 2之间的协同效应是高性能的关键.
兴奋剂增强了催化剂的重建,并促进了活性氧化物种的形成.
这项研究为开发高效的酸盐转化为氨的电催化剂提供了一个有希望的策略.

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