Polydopamine assisted synthesis of N-doped Al2O3/PDA/MnO2 for enhanced catalytic ozonation of MB in waste water

IF 2.7 4区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Letters Pub Date : 2024-10-29 DOI:10.1016/j.matlet.2024.137631

Zhenzhong Liu , Chenyang Guo , Jialei Ying , Xinlei Xu , Yang Xu , Qijie Liu , Guihua Chen , Xiaolu Qu , Yongzheng Yue , Changyan Xue

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Abstract

In this study, a novel N-doped Al₂O₃/PDA/MnO₂ ozonation catalyst were fabricated by sequential coating of polydopamine (PDA) via self-polymerization and MnO₂ loading via calcination processes. The ozonation catalyst was characterized by XRD and XPS, confirming the successful preparation of N-doped Al₂O₃/PDA/MnO_2. The decoration of PDA polymer can enhance the loading and dispersion properties of MnO₂ on Al₂O₃ spheres. In contrast, the apparent rate constant of N-doped Al₂O₃/PDA/MnO₂ ozonation catalyst for methylene blue (MB) degradation was 2.67 times than that of undoped Al₂O₃/MnO₂. This work provides a general strategy for exploring novel polymer-assisted functional Al₂O₃ based ozonation catalyst for waste water treatment applications.

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聚多巴胺辅助合成掺杂 N 的 Al2O3/PDA/MnO2 以增强废水中甲基溴的催化臭氧氧化作用

本研究通过自聚合法包覆聚多巴胺（PDA）和煅烧法负载 MnO2，制备了新型 N 掺杂 Al2O3/PDA/MnO2 臭氧催化剂。通过 XRD 和 XPS 对臭氧催化剂进行了表征，证实了 N 掺杂 Al2O3/PDA/MnO2 的成功制备。PDA 聚合物的装饰可以提高 MnO2 在 Al2O3 球体上的负载和分散性能。相比之下，掺杂 N 的 Al2O3/PDA/MnO2 臭氧催化剂降解亚甲基蓝（MB）的表观速率常数是未掺杂 Al2O3/MnO2 的 2.67 倍。这项工作为探索新型聚合物辅助功能 Al2O3 臭氧催化剂在废水处理中的应用提供了一种通用策略。

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来源期刊

Materials Letters 工程技术-材料科学：综合

CiteScore

5.60

自引率

3.30%

发文量

1948

审稿时长

50 days

期刊介绍： Materials Letters has an open access mirror journal Materials Letters: X, sharing the same aims and scope, editorial team, submission system and rigorous peer review. Materials Letters is dedicated to publishing novel, cutting edge reports of broad interest to the materials community. The journal provides a forum for materials scientists and engineers, physicists, and chemists to rapidly communicate on the most important topics in the field of materials. Contributions include, but are not limited to, a variety of topics such as: • Materials - Metals and alloys, amorphous solids, ceramics, composites, polymers, semiconductors • Applications - Structural, opto-electronic, magnetic, medical, MEMS, sensors, smart • Characterization - Analytical, microscopy, scanning probes, nanoscopic, optical, electrical, magnetic, acoustic, spectroscopic, diffraction • Novel Materials - Micro and nanostructures (nanowires, nanotubes, nanoparticles), nanocomposites, thin films, superlattices, quantum dots. • Processing - Crystal growth, thin film processing, sol-gel processing, mechanical processing, assembly, nanocrystalline processing. • Properties - Mechanical, magnetic, optical, electrical, ferroelectric, thermal, interfacial, transport, thermodynamic • Synthesis - Quenching, solid state, solidification, solution synthesis, vapor deposition, high pressure, explosive