标题：Constructing carbon nitride embedded Fe⁰ for efficient activation of peroxymonosulfate towards organic pollutants degradation in water

作者：Yajun Ji, Feiya Xu, Jun Yan, Xiaoyong Liu, Xiaoxiao Li

来源出版物：Elsevier

DOI：10.1016/j.jwpe.2024.106556

出版年：2024

文献类型：Article

语种：英文

摘要：Peroxymonosulfate (PMS)-based advanced oxidation technology have emerged as a promising technology for organic pollutant remediation. In this study, carbon nitride encapsulated Fe⁰ catalysts (Fe-N/C) were synthesized for PMS activation towards organic pollutant degradation. The prepared Fe-N/C-700 catalyst with high BET surface area (194.08 m²·g^-1), abundant graphite N and Fe⁰ sites exhibited superior activity. Over 98.58% of Methylene blue (MB, 10 mg·L^-1) could be rapidly degraded within 10 min in Fe-N/C-700/PMS system, and the rate constant reached to 1.21 min^-1. Fe-N/C-700/PMS system also exhibited prominent advantages of adapting to a broad solution pH range (3~11), strong resistance to inorganic ions and natural organic matter, long-term stability and excellent solid-liquid separation performance. The graphitic N and Fe⁰ in Fe-N/C-700 were the main reactive sites for activating PMS to generate ¹O₂, and HV-Fe=O. These reactive oxygen species (ROS) collectively contributed to the degradation of MB. Besides, acid red G (ARG), tetracycline (TC), crystal violet (CV), methyl orange (MO) can also be efficiently removed within 10 min in Fe-N/C-700/PMS system. Therefore, this study provided a promising alternative approach for the degradation of organic contaminants in water.

关键词：Advanced oxidation, Peroxymonosulfate, Methylene blue, Zero-valent ion, Graphite N

影响因子：6.3

论文链接：https://doi.org/10.1016/j.jwpe.2024.106556