Iron and nitrogen co-doped biochar membrane (Fe/N/BC membrane) was fabricated. Epoxy resin was used as a binder, 4,4́-diaminodiphenylmethane as curing agent, and polyethylpyrrolidone as pore-making agent, respectively. The Fe/N/BC membrane showed excellent performance of filtration and catalytic oxidative removal of sulfamethoxazole (SMX) in water and its water flux was 127 L·m⁻²·h⁻¹·bar⁻¹. The Fe/N/BC membrane had a good application prospect in a wide pH range (both acidic and neutral conditions). The contribution of Fe doping was higher than that of N doping in the SO₄^{• −} and ·OH radicals generation pathways but the contribution of N doping is higher than that of Fe doping for the ¹O₂ non-radical generation pathway. Finally, the membrane facilitates the recovery of catalytic materials and solves the problem of secondary pollution to the environment. This study provides an important practical prospect for efficient and rapid removal of SMX in water.

中文翻译：

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铁和氮共掺杂生物炭膜，用于通过过滤和催化氧化去除水中的 SMX


制备了铁和氮共掺杂的生物炭膜 （Fe/N/BC 膜）。以环氧树脂为粘合剂，4,4'-二氨基二苯甲烷为固化剂，聚乙基吡咯烷酮为造孔剂。Fe/N/BC 膜对水中的磺胺甲噁唑 （SMX） 表现出优异的过滤和催化氧化去除性能，其水通量为 127 L·m⁻²·h⁻¹·bar⁻¹。Fe/N/BC 膜在较宽的 pH 范围（酸性和中性条件）具有良好的应用前景。在 SO₄^{• −} 和 ·OH 自由基生成途径，但 N 掺杂对¹O₂ 非自由基生成途径的贡献高于 Fe 掺杂。最后，该膜促进了催化材料的回收，解决了对环境的二次污染问题。本研究为高效、快速去除水中的 SMX 提供了重要的实践前景。