MOF-Derived Fe2O3/Nitrogen/Carbon Composite as a Stable Heterogeneous Electro-Fenton Catalyst,Industrial & Engineering Chemistry Research

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MOF-Derived Fe2O3/Nitrogen/Carbon Composite as a Stable Heterogeneous Electro-Fenton Catalyst
Industrial & Engineering Chemistry Research ( IF 3.8 ) Pub Date : 2020-01-24 , DOI: 10.1021/acs.iecr.9b04428
Jia-Yuan Lu _{1,

2} , Yan-Ru Yuan _{1,

3} , Xiao Hu ₁ , Wu-Jun Liu ₁ , Chen-Xuan Li _{1,

2} , Hou-Qi Liu _{1,

2} , Wen-Wei Li _{1,

2}

Affiliation

Heterogeneous Electro-Fenton (EF) enables rapid elimination of recalcitrant organic pollutants without producing undesirable byproducts, but stable functioning of this process remains challenging. In this work, a porous composite of ferric oxide/nitrogen/carbon (Fe₂O₃/N–C) with good EF activity and stability was fabricated from iron-based metal–organic framework compounds (MOFs) and polyaniline via one-step pyrolysis. The incorporated Fe₂O₃ nanocrystals and the pyridinic and pyrrolic-N species endow the material with high catalytic activity for hydrogen peroxide (H₂O₂) generation and activation. The efficient degradation of bisphenol A and several other organic pollutants, dominated by a heterogeneous EF pathway, was achieved in acidic solution. The catalyst had low Fe leaching (0.52 mg/L after 2 h of reaction) and retained 98% of its original activity after four cycles of repeated use. Therefore, Fe₂O₃/N–C may serve as an efficient, stable, and environmentally benign heterogeneous EF catalyst for wastewater treatment and environmental remediation applications.

中文翻译：

MOF衍生的Fe ₂ O ₃ /氮/碳复合材料作为稳定的非均相电Fenton催化剂

异质电子芬顿（EF）能够快速消除顽固性有机污染物而不会产生不良副产物，但是此过程的稳定功能仍然具有挑战性。在这项工作中，通过铁基金属-有机骨架化合物（MOFs）和聚苯胺的一步制备了具有良好EF活性和稳定性的氧化铁/氮/碳（Fe ₂ O ₃ / NC）多孔复合材料热解。掺入的Fe ₂ O ₃纳米晶体以及吡啶和吡咯N族物质赋予该材料对过氧化氢（H ₂ O _2）的高催化活性。）生成和激活。在酸性溶液中，可以实现双酚A和其他几种有机污染物的有效降解，其中主要由异质EF途径控制。该催化剂具有较低的铁浸出率（反应2小时后为0.52 mg / L），并且在重复使用四个循环后仍保持其原始活性的98％。因此，Fe ₂ O ₃ / N–C可以用作废水处理和环境修复应用中的高效，稳定且对环境无害的异质EF催化剂。

更新日期：2020-01-26

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