Abstract Magnetically recyclable porous sodium dodecyl sulfate (SDS)/Fe2O3 hybrids, which combine the porous structure of Fe2O3 and hydrophobicity of SDS, have been successfully synthesized for the first time. Porous Fe2O3 has been first pyrolyzed from MIL-100(Fe) using a simple two-step calcination route. Then, the obtained porous Fe2O3 nanoparticles have been self-assembled with SDS molecules and yielded hydrophobic SDS/Fe2O3 hybrids. The porous SDS/Fe2O3 hybrids have been demonstrated to be highly efficient for the denitrification of pyridine under visible light irradiation. The pyridine removal ratio has reached values as high as 100% after irradiation for 240 min. Combining the results of a series of experimental measurements, it was concluded that the superior photocatalytic performance of SDS/Fe2O3 hybrids could be attributed to (i) the fast electron transport owing to the unique porous structure of Fe2O3, (ii) the superior visible light absorption of Fe2O3 nanoparticles, and (iii) the “bridge molecule” role of SDS efficiently improving the separation and transfer across the interfacial domain of SDS/Fe2O3 of photogenerated electron-hole pairs. More significantly, after the catalytic reaction, the SDS/Fe2O3 hybrids could be easily recovered using magnets and reused during subsequent cycles, which indicated their stability and recyclability.

中文翻译：

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十二烷基硫酸钠修饰的 MOF 衍生的多孔 Fe2O3 纳米粒子：用于燃料脱硝的高性能、可回收光催化剂

摘要 首次成功合成了结合Fe2O3多孔结构和SDS疏水性的磁性可回收多孔十二烷基硫酸钠(SDS)/Fe2O3杂化物。首先使用简单的两步煅烧路线从 MIL-100(Fe) 热解多孔 Fe2O3。然后，获得的多孔 Fe2O3 纳米粒子与 SDS 分子自组装并产生疏水性 SDS/Fe2O3 杂化物。多孔 SDS/Fe2O3 杂化物已被证明在可见光照射下对吡啶的反硝化非常有效。辐照 240 分钟后，吡啶去除率已达到 100%。结合一系列实验测量的结果，得出的结论是，SDS/Fe2O3 杂化物的优异光催化性能可归因于 (i) 由于 Fe2O3 独特的多孔结构导致的快速电子传输，(ii) Fe2O3 纳米颗粒的优异可见光吸收，以及 (iii) SDS 的“桥分子”作用有效地改善了光生电子 - 空穴对的 SDS/Fe2O3 界面域的分离和转移。更重要的是，在催化反应之后，SDS/Fe2O3 杂化物可以很容易地使用磁铁回收并在后续循环中重复使用，这表明它们的稳定性和可回收性。(iii) SDS 的“桥分子”作用有效地改善了光生电子-空穴对的 SDS/Fe2O3 界面域的分离和转移。更重要的是，在催化反应之后，SDS/Fe2O3 杂化物可以很容易地使用磁铁回收并在后续循环中重复使用，这表明它们的稳定性和可回收性。(iii) SDS 的“桥分子”作用有效地改善了光生电子-空穴对的 SDS/Fe2O3 界面域的分离和转移。更重要的是，在催化反应之后，SDS/Fe2O3 杂化物可以很容易地使用磁铁回收并在后续循环中重复使用，这表明它们的稳定性和可回收性。