Document Type

Journal Article

Publication Title

International Journal of Environmental Research and Public Health








School of Engineering


Natural Science Foundation of Jiangsu Province (Grants No.BK20200794) / China MOST (Grant No. 2018YFE0183600) / National Natural Science Foundation of China (Grants No. 52106249 and 51876093) / Start‑up Fund for Scientific Research of Nanjing Forestry University (Grant No. GXL2020002)


Gao, Y., Gao, W., Zhu, H., Chen, H., Yan, S., Zhao, M., ... & Zhang, S. (2022). A review on N-doped biochar for oxidative degradation of organic contaminants in wastewater by persulfate activation. International Journal of Environmental Research and Public Health, 19(22), 14805.


The Persulfate-based advanced oxidation process is the most efficient and commonly used technology to remove organic contaminants in wastewater. Due to the large surface area, unique electronic properties, abundant N functional groups, cost-effectiveness, and environmental friendliness, N-doped biochars (NBCs) are widely used as catalysts for persulfate activation. This review focuses on the NBC for oxidative degradation of organics-contaminated wastewater. Firstly, the preparation and modification methods of NBCs were reviewed. Then the catalytic performance of NBCs and modified NBCs on the oxidation degradation of organic contaminants were discussed with an emphasis on the degradation mechanism. We further summarized the detection technologies of activation mechanisms and the structures of NBCs affecting the PS activation, followed by the specific role of the N configuration of the NBC on its catalytic capacity. Finally, several challenges in the treatment of organics-contaminated wastewater by a persulfate-based advanced oxidation process were put forward and the recommendations for future research were proposed for further understanding of the advanced oxidation process activated by the NBC.



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Creative Commons Attribution 4.0 License
This work is licensed under a Creative Commons Attribution 4.0 License.