Department of Pure and Applied Chemistry, Faculty of Science and Technology, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278-8510, Japan.
Research Center for Space System Innovation, Research Institute for Science and Technology, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278-8510, Japan.
J Colloid Interface Sci. 2023 Jul 15;642:829-836. doi: 10.1016/j.jcis.2023.02.136. Epub 2023 Feb 28.
Advanced oxidation technologies (AOTs) proved to be effective in the degradation of hazardous organic impurities like acids, dyes, antibiotics etc. in the last few decades. AOTs are mainly based on the generation of reactive chemical species (RCS) such as hydroxyl, superoxide radicals etc., which plays an important role in the degradation of organiccompounds. In this work, plasma supported AOT i.e. Fenton reactions have been applied for the degradation of ibuprofen. As compared to traditional AOTs plasma assisted AOT is technologically superior due to its capability to produce RCS at a controlled rate without using chemical agents. This process work at normal room temperature and pressure. Herein, we optimized better operating conditions to generate good plasma discharge and hydroxyl radicals based on critical parameters, including frequency, pulse width and different gases like O, Ar etc. Also, the one-pot carbonization method is used for the synthesis of Fe-based ordered mesoporous carbon (OMC) as a heterogeneous catalyst for the Fenton reactions. Using plasma-supported Fenton reactions, 88.3 % degradation efficiency is achieved using Fe-OMC catalyst for the ibuprofen degradation. Also, the mineralization of the ibuprofen is studied using total organic carbon (TOC) analysis.
在过去的几十年中，高级氧化技术 (AOT) 已被证明可有效降解如酸、染料、抗生素等有害有机杂质。AOT 主要基于活性化学物质 (RCS) 的生成，如羟基、超氧自由基等，这些物质在有机化合物的降解中起着重要作用。在这项工作中，采用等离子体支持的 AOT（即芬顿反应）来降解布洛芬。与传统的 AOT 相比，由于等离子体辅助 AOT 能够在不使用化学试剂的情况下以受控的速率产生 RCS，因此在技术上更具优势。该过程在正常室温常压下进行。在此，我们优化了更好的操作条件，以根据关键参数（包括频率、脉冲宽度和不同气体如 O、Ar 等）生成良好的等离子体放电和羟基自由基。此外，还采用一锅碳化法合成了用于芬顿反应的 Fe 基有序介孔碳（OMC）作为多相催化剂。使用等离子体支持的芬顿反应，Fe-OMC 催化剂可实现布洛芬降解的 88.3%的降解效率。此外，还通过总有机碳 (TOC) 分析研究了布洛芬的矿化。
