通过在光电化学过程中通过氧和过氧硫酸盐的联合激活来促进盐度废水处理的单一氧气生成
Qianqian Yang1, Zhiyuan Feng1, Yanbo Zhou2
1Shanghai Key Lab of Chemical Assessment and Sustainability, Key Laboratory of Yangtze River Water Environment, School of Chemical Science and Engineering, Tongji University, Shanghai 200092, China.
Fundamental research
|April 1, 2025
概括
这项研究引入了一种新的光电化学方法,使用Fe修饰的化碳来促进单片氧 (1O2) 生产,以有效处理盐水废水,克服传统基 (HO•) 方法的局限性.
科学领域:
- 环境化学环境化学
- 材料科学 材料科学 材料科学
- 电化学 电化学 电化学
背景情况:
- 盐水废水中的高离子度抑制了基于基 (HO•) 的先进氧化过程.
- 需要强大的废水处理技术,适应盐水条件和复杂的矩阵.
研究的目的:
- 为增强单片氧 (1O2) 生产开发光电化学策略.
- 通过非激进氧化途径改善盐水废水中的污染物去除.
主要方法:
- 用Fe-N桥梁制造原子Fe修饰的石墨碳化物 (SA-FeCN).
- 使用光电化学工艺联合激活氧和过氧硫酸盐 (PMS).
- 研究了电子转移动态和1O2生成的中间形成.
主要成果:
- 实现了39.4μmol L-1s-1的优化1O2生成速率,明显高于传统方法.
- 通过非激素途径证明了污染物的有效去除,不受无机离子的影响.
- 在3小时内,在真实煤炭和工业废水样本中实现了90%-96%的COD去除.
结论:
- 通过调节电子转移,SA-FeCN材料有效促进1O2的产生.
- 这种方法为处理性废水提供了一个有希望的解决方案,特别是对于富含电子的污染物.
- 非激进氧化途径提高了复杂矩阵中的处理效率和稳定性.
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