通过电容性去离子化进行高效的Cr (VI) 去除的D频段中心调节的CoNi合金@碳复合材料
Wei Guo1, Hongmin Tian1, Zhenlin Mo1
1College of Resource and Environmental Engineering, Guizhou University, Guiyang 550025, China.
Journal of hazardous materials
|September 17, 2025
概括
一种新型的CoNi@C复合物有效地使用电容离离子化 (CDI) 从水中去除超过99.67%的有毒六价 (Cr(VI)). 这种可持续的,以太阳能为动力的方法提供了卓越的性能和降低了净化水的能源消耗.
科学领域:
- 材料科学 材料科学 材料科学
- 环境化学环境化学
- 电化学 电化学 电化学
背景情况:
- 六价 (Cr(VI)) 因其高毒性而构成重大环境和健康风险.
- 迫切需要有效和可持续的方法来从水中去除.
研究的目的:
- 开发一种CoNi@C复合材料,使用电容脱离离子 (CDI) 来有效地从水中去除Cr{VI}.
- 优化材料的性能,以提高Cr(VI) 的吸附性,并了解其去除机制.
主要方法:
- 密度函数理论 (DFT) 用于通过优化d频段中心来指导CoNi@C复合材料的设计.
- 进行了容量脱离离子 (CDI) 实验,以评估该材料在去除Cr6的性能.
- 机制分析涉及研究电子结构和结合相互作用.
主要成果:
- 在低于20 ppm的度下,CoNi@C复合物实现了超过99.67%的Cr (VI) 去除率.
- 吸附能力超过253.87毫克/克,去除率为268.31毫克/克/小时.
- 该材料表现出极好的稳定性,在太阳能上有效运行30小时,能源消耗低于2.99Wh/mg.
结论:
- 与现有的电极材料相比,CoNi@C复合材料在Cr(VI) 清除方面表现出优异的性能.
- 这项研究阐明了涉及d频段中心优化,强Co/Ni-O键和电子转移的机制.
- 这项工作提出了一个有前途的策略,用于设计过渡金属碳复合材料,用于可持续和环保的水处理.
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