The degradation of emerging contaminants by peroxymonosulfate activated with sodium iron phosphate

Jiahao Cui; Wenhao Zhang; Jiangtao Feng; Yongfang Rao

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The degradation of emerging contaminants by peroxymonosulfate activated with sodium iron phosphate

更新时间：2026-09-01

- The degradation of emerging contaminants by peroxymonosulfate activated with sodium iron phosphate
- JOURNAL OF XI’AN JIAOTONG UNIVERSITY (2026)
- 作者机构：
  
  西安交通大学能源与动力工程学院，710049，西安
- 作者简介：
- 基金信息：
- DOI：
  CLC： X522
- Received：24 April 2026，
  
  Revised：2026-08-01，
  
  Accepted：01 September 2026，
- 稿件说明：
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Jiahao Cui, Wenhao Zhang, Jiangtao Feng, et al. The degradation of emerging contaminants by peroxymonosulfate activated with sodium iron phosphate[J]. JOURNAL OF XI’AN JIAOTONG UNIVERSITY,2026.
DOI：

Jiahao Cui, Wenhao Zhang, Jiangtao Feng, et al. The degradation of emerging contaminants by peroxymonosulfate activated with sodium iron phosphate[J]. JOURNAL OF XI’AN JIAOTONG UNIVERSITY,2026. DOI：

摘要

针对废旧钠电池正极材料NaFePO₄（NFP）的资源化利用及水体中药物类新污染物难降解问题，本研究以NFP为非均相催化剂研究其活化过一硫酸盐（PMS）降解不同药物的效能、反应机理及溶液pH值、NFP投加量、PMS浓度对有机物降解的影响，利用复用实验和XRD表征评估催化剂稳定性与失活机制。结果表明：NFP可高效活化PMS降解各类药物，最佳反应条件为pH 4.5、NFP投加量0.2 g·L

-1

、PMS浓度0.2 mmol·L

-1

；NFP中Fe

活化PMS产生的羟基自由基和硫酸根自由基是降解对乙酰氨基酚、布洛芬、扑米酮以及卡马西平的主导活性物种；在双氯芬酸的去除中，单线态氧和自由基都有重要作用，而环丙沙星的去除主要依赖单线态氧；NFP具备一定的复用潜力，能够在5次循环中保持60%以上的对乙酰氨基酚（AMP）去除效率，其失活机制主要是由于活性Fe

位点被氧化为Fe

。本研究为将来废旧钠电池资源化利用及新污染物治理提供理论支撑与技术参考。

Abstract

To achieve resource utilization of spent sodium battery cathode material NaFePO

(NFP) and the effective elimination of pharmaceutical emerging contaminants from water

this study employed NFP as a heterogeneous catalyst to activate peroxymonosulfate (PMS) for the degradation of various pharmaceuticals. The degradation performance

reaction mechanism

and the effects of solution pH

NFP dosage

and PMS concentration on organic removal were systematically investigated. In addition

reusability experiments and X‑ray diffraction (XRD) characterization were performed to evaluate the catalyst stability and deactivation mechanism. The findings reveal that NFP can effectively activate PMS to degrade various pharmaceuticals

with the optimal reaction conditions determined as pH 4.5

NFP dosage of 0.2 g·L

-1

and PMS concentration of 0.2 mmol·L⁻¹. Hydroxyl radicals (·OH) and sulfate radicals (SO₄

·-

) generated via Fe

-mediated PMS activation in NFP are the dominant reactive species governing the degradation of acetaminophen

ibuprofen

primidone

and carbamazepine. Singlet oxygen and free radicals both play important roles in the removal of diclofenac while singlet oxygen plays the primary role in the removal of ciprofloxacin. NFP retained over 60% acetaminophen removal efficiency and structural stability after five consecutive reaction cycles. Its deactivation mechanism is primarily attributed to the oxidation of active Fe

sites to Fe

.This study provides theoretical insights and technical guidance for the resource recovery of spent SIB cathodes in the future and the remediation of emerging pharmaceutical pollutants in water.

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references

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