离子效应的二元性:阴离子沉点和阴离子相互作用如何形成电化学酸盐减少
Li Ling1, Yingkai Chen1,2, Weiquan Li1
1Shenzhen Key Laboratory of Precision Measurement and Early Warning Technology for Urban Environmental Health Risks, School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, China.
ACS applied materials & interfaces
|June 27, 2025
概括
电化学酸盐降解为氨 (ENRA) 是一个可持续的过程. 离子和有机物质等水杂质对ENRA性能产生重大影响,但预处理可以提高复杂水的效率.
科学领域:
- 电化学 电化学 电化学
- 环境科学 环境科学
- 催化剂是一种催化剂.
背景情况:
- 电化学酸盐降解为氨 (ENRA) 是Haber-Bosch的可持续替代品.
- 此外,ENRA还可以从污染水中去除酸盐 (NO-).
- 同时存在的物质对ENRA的影响尚不清楚.
研究的目的:
- 调查离子物种和溶解有机物如何影响ENRA的性能.
- 在各种条件下评估Cu@Ni电极的稳定性和效率.
- 在现实水样中确定ENRA预处理的作用.
主要方法:
- 测试了一个Cu@Ni电极用于ENRA在具有不同离子组成的溶液中.
- 分析了特定离子 (HCO3-,Ca2+,Mg2+,Cl-,S2-) 和溶解的有机物质的影响.
- 评估ENRA在受污染的地下水中的性能,有或没有酸预处理.
主要成果:
- HCO3-和Ca2+保持稳定的NO3-去除 (83.2%) 由于保护性形形成.
- 2+通过沉到活性部位而降低了性能.
- Cl-增强了NO3-的去除,而S2-毒害了电极.
- 在未经处理的地下水中,ENRA是可以忽略不计的,但在酸/预处理后改善了>50%.
结论:
- 离子组成极大地影响ENRA的性能.
- 电极表面的相互作用,如形和中毒,决定了效率.
- 预处理是一种可行的策略,可以在复杂的水矩阵中实现ENRA.
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