Abstract MoO2 and MoO3 were applied as catalysts for plasma degradation of organic compound. They were prepared by electrodeposition (MoO2) and electrodeposition followed by thermal treatment (MoO3), and then characterized by the cyclic voltammetry, SEM, EDX, XRD, and FTIR. The RB 19 was degraded by self-made non-thermal atmospheric pressure pulsating plasma corona reactor. Decolourization mechanism, parameters, kinetics, and influence of the catalysts were examined. Mo-oxides enhanced degradation reactions rate constants by 45% – 50%, increased decolourization rate at all the tested pHs, discharged current densities, and decreased energy consumption. Degradation followed the pseudo-first kinetics order and proceeded via plasma-generated ⋅OH radical, which attacked dye molecule; MoO2 and MoO3, excited by plasma-generated UV radiation and high-energy chemical species bombardment, enhanced decomposition of plasma-generated H2O2 into ⋅OH radicals, thus enhancing production of degradation agent. Higher percentage of mineralization was attained in the presence of catalysts, which maintained their degradation activity after 5 uses.

中文翻译：

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电化学合成钼氧化物，用于增强大气压非热脉动电晕等离子体诱导的有机化合物降解

摘要 MoO2和MoO3被用作等离子体降解有机化合物的催化剂。它们通过电沉积 (MoO2) 和电沉积后热处理 (MoO3) 制备，然后通过循环伏安法、SEM、EDX、XRD 和 FTIR 进行表征。RB 19被自制的非热常压脉动等离子体电晕反应器降解。研究了催化剂的脱色机理、参数、动力学和影响。Mo 氧化物将降解反应速率常数提高了 45% – 50%，在所有测试的 pH 值下提高了脱色率，放电电流密度，并降低了能耗。降解遵循伪一级动力学顺序，并通过等离子体生成的 ⋅OH 自由基进行，后者攻击染料分子；MoO2 和 MoO3，由等离子体产生的紫外线辐射和高能化学物质轰击激发，增强等离子体产生的 H2O2 分解为 ⋅OH 自由基，从而增强降解剂的产生。在催化剂的存在下获得了更高的矿化百分比，在使用 5 次后仍保持其降解活性。