| 废磷酸铁锂电池磷铁渣制备催化剂降解RhB 的研究 |
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| 引用本文：王世伟,张利,苑文仪,黄庆.废磷酸铁锂电池磷铁渣制备催化剂降解RhB 的研究[J].上海第二工业大学(中文版),2025,42(1):24-31 |
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| 中文摘要:随着废磷酸铁锂电池的回收与资源化工作的重要性日益凸显, 提锂后的磷铁渣目前还没有有效的利用方式。探讨通过制备FePO4-C 催化剂实现磷铁渣的资源化利用, 并评估其降解水溶性有机污染物罗丹明B (Rhodamine B, RhB) 的应用效果。采用N-甲基吡咯烷酮除杂和低温煅烧方法, 将磷铁渣转化为FePO4-C。通过X 射线衍射仪、扫描电子显微镜、X 射线光电子能谱等对材料的结构和稳定性进行分析, 并测试其在模拟可见光条件下对RhB 的降解性能。实验表明, 50 mg FePO4-C 对pH 为3, 50 mg/L、50 mL RhB 溶液的降解率可以达到99.63%。在5 次循环降解实验后, 降解率有所下降, 但仍保持在90% 以上, 表明制备的FePO4-C 能够高效降解RhB, 具有较强的稳定性与可重复利用性。。 |
| 中文关键词:磷酸铁 碳 有机污染物 光催化剂 废旧磷酸铁锂电池 |
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| Study on RhB Degradation by Catalysts Prepared from Phosphorus-Iron Slag of Spent Lithium Iron Phosphate Batteries |
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| Abstract:With the increasing prominence of the importance of the recycling and resource utilization of spent lithium iron phosphate batteries, there is currently no effective utilization method for the phosphorus-iron slag after lithium extraction. The resource utilization of phosphorus-iron slag was explored through the preparation of FePO4-C catalysts and its application in the degradation of Rhodamine B (RhB), a water-soluble organic pollutant was evaluated. The phosphorus-iron slag was converted into FePO4-C by using N-methylpyrrolidone decontamination and low-temperature calcination. The structure and stability of the materials were analyzed by X-ray diffraction, scanning electron microscopy, and X-ray photoelectron spectroscopy, and its degradation performance of RhB under simulated visible light conditions was tested. The experiment shows that the degradation rate of 50 mL of RhB solution with concentration of 50 mg/L and pH of 3 by 50 mg FePO4-C reaches 99.63%. After 5 cycles of degradation experiments, the degradation ratedecreases, but still remains above 90%, it shows that the prepared FePO4-C can efficiently degrade RhB and has strong stability and reusability. |
| keywords:iron phosphate carbon organic pollutants photocatalyst spent lithium iron phosphate batteries |
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