基于钼掺杂锰氧化物包覆TiO₂纳米管阳极的电催化去除持久性有机污染物研究
Electrocatalytic removal of persistent organic contaminants at molybdenum doped manganese oxide coated TiO2 nanotube-based anode
AI总结：
本研究针对电氧化处理持久性有机污染物缺乏高效低成本无氯化副产物阳极的问题，开发了Mo掺杂MnₓOᵧ包覆TiO₂纳米管阵列阳极，性能优于商用阳极且能耗低、稳定性好，避免析氯反应。
摘要：
电氧化是一种可有效应用于持久性有机污染物处理的颇具吸引力的技术，但其实际应用受限于缺乏高效、低成本且不会产生氯化副产物的阳极材料。本文中，我们开发了一种基于包覆Mo掺杂MnₓOᵧ的TiO₂纳米管阵列（NTA）的新型阳极，并将其应用于持久性有机污染物的电氧化处理。Ti/TiO₂ NTA/MnₓOᵧ-Mo阳极性能优于商用Ti/IrOₓ-Pt阳极，可有效氧化有机污染物，显著降低了每级电能消耗，同时避免了析氯反应。Mo掺杂对所合成阳极的优异性能起到关键作用，它促进了主体晶格中氧空位以及Mn和Mo物种氧化还原电对的形成，提升了阳极的氧化能力并确保了其完全稳定性。
英文摘要：
Electrooxidation is an attractive technique that can be effectively applied for the treatment of persistent organic contaminants, but its implementation in practice is limited by the lack of efficient and low cost anode material that would not lead to the generation of chlorinated by products. Herein, we developed a novel anode based on TiO2 nanotube array NTA coated with Mo-doped MnxOy, and applied it for electrooxidation of persistent organic contaminants. The Ti TiO2 NTA MnxOyMo anode outperformed the commercial Ti IrOxPt anode and effectively oxidized organic contaminants, with a significantly reduced electric energy per order, and avoiding chlorine evolution reaction. Mo doping played a key role in the excellent performance of the synthesized anode as it favored the formation of oxygen vacancies in the host lattice and Mn and Mo species redox couples, which increased the oxidizing power of the anode and ensured its complete stability.
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