三聚氰胺辅助热解制备Fe-NC-C催化剂及其活化PMS降解磺胺醋酰

doi:10.12677/ms.2026.167167

期刊菜单

三聚氰胺辅助热解制备Fe-NC-C催化剂及其活化PMS降解磺胺醋酰
Melamine-Assisted Pyrolysis Preparation of Fe-NC-C Catalyst for PMS Activation to Degrade Sulfacetamide

DOI: 10.12677/ms.2026.167167, PDF, 科研立项经费支持
作者: 尹亚琦：伊犁师范大学化学化工学院，新疆生物质资源清洁转化与高值利用重点实验室，新疆伊宁；杨坤懿：伊犁师范大学资源与环境学院，新疆污染物化学与环境治理重点实验室，新疆伊宁；冯丹：伊犁师范大学化学化工学院，新疆生物质资源清洁转化与高值利用重点实验室，新疆伊宁；伊犁师范大学资源与环境学院，新疆污染物化学与环境治理重点实验室，新疆伊宁
关键词: 单原子催化剂；过一硫酸盐；高级氧化；ZIF-8；磺胺类抗生素；Single-Atom Catalyst； Peroxymonosulfate； Advanced Oxidation； ZIF-8； Sulfonamide Antibiotics

摘要: 采用三聚氰胺辅助热解策略，以Fe掺杂ZIF-8为前驱体制备了Fe单原子催化剂(Fe-NC-C)，用于过一硫酸盐(PMS)活化降解磺胺类抗生素。通过XRD、TEM/HAADF-STEM、XAFS等表征证实，三聚氰胺的引入将Fe保留率从0.085 wt%提升至0.156 wt%，并构建了微孔–介孔分级结构(孔容0.49 cm³/g)。Fe-NC-C/PMS体系10 min内对磺胺醋酰(SA)去除率达83.2%，反应速率常数(0.30 min⁻¹)为直接热解样品(Fe-NC)的2.0倍。猝灭实验与电子自旋波谱分析表明体系以•OH与

S O_{4}^{\cdot -}

为主要活性物种。该研究为ZIF-8衍生碳基单原子催化剂的制备提供了优化策略。

Abstract: A Fe single-atom catalyst (Fe-NC-C) was prepared via melamine-assisted pyrolysis of Fe-doped ZIF-8 for peroxymonosulfate (PMS) activation to degrade sulfonamide antibiotics. Characterizations by XRD, TEM/HAADF-STEM, XPS, and XAFS confirmed that melamine introduction increased Fe retention from 0.085 wt% to 0.156 wt% and constructed a hierarchical micro-mesoporous structure (pore volume 0.49 cm³/g). The Fe-NC-C/PMS system achieved 83.2% sulfacetamide (SA) removal within 10 min, with a reaction rate constant (0.30 min⁻¹) 2.0 times that of directly pyrolyzed Fe-NC. Quenching experiments and ESR analysis identified •OH/

S O_{4}^{\cdot -}

as the dominant reactive species. This study provides an optimization strategy for preparing ZIF-8-derived carbon-based single-atom catalysts.

文章引用：尹亚琦, 杨坤懿, 冯丹. 三聚氰胺辅助热解制备Fe-NC-C催化剂及其活化PMS降解磺胺醋酰[J]. 材料科学, 2026, 16(7): 192-203. https://doi.org/10.12677/ms.2026.167167

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