活性炭纤维三维电极电催化降解水中间甲酚——效能及影响因素研究

探讨了以活性炭纤维作为三维粒子电极电氧化降解水中间甲酚的可行性与效果.首先对活性炭纤维的表面形貌，比表面积，孔结构和表面官能团情况进行了表征，发现活性炭纤维（ACFs）以单束纤维的结构交叉排列而成，比表面积较大（>1480m²/g），另外发现活性炭纤维的表面存在较多官能团种类.结合活性炭纤维表征结果，论文对活性炭纤维三维电极的相关影响因素进行了考察，研究了活性炭纤维种类，活性炭纤维与电极的接触方式以及反应溶液初始pH值对实验结果的影响.结果表明，活性炭纤维表面过多的含氧官能团不利于污染物的快速降解，而三维电极电氧化效果随着pH值的降低而显著增大，不同的电极接触方式对三维电极电氧化效果也有较大影响.

Efficacy and influencing factors of electrocatalytic degradation of m-cresol in wastewater by activated carbon fiber as three-dimensional electrodes

The feasibility and efficiency of m-cresol removal with three different categories of activated carbon fibers (ACFs) as particle electrodes were investigated. The surface morphology of activated carbon fibers was examined by scanning electron microscopy (SEM). The pore structure and specific surface area of activated carbon fibers were studied by BET. The variety and number of surface functional groups of activated carbon fibers were characterized by temperature programmed desorption (TPD-Ms). It was found the activated carbon fibers were formed by cro ss binding of single bundle fibers structure with a large specific surface area (>1480m²/g) and diverse functional groups. Furthermore, influence of operating parameters was investigated including the effects of ACFs types, contact mode of ACFs and electrode, as well as initial pH. The electrochemical degradation results demonstrated that the excessive oxygen functional groups on the surface of ACFs might be adverse to the removal rate of pollutants. The electrooxidation efficiency of three-dimensional electrodes increases significantly with the decrease of pH, and different electrode contact modes also have great influence on the electrooxidation effect of three-dimensional electrode.