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首页> 外文期刊>Separation and Purification Technology >Stable photocatalytic activity of immobilized Fe~0/TiO2/ACF on composite membrane in degradation of 2,4-dichlorophenol
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Stable photocatalytic activity of immobilized Fe~0/TiO2/ACF on composite membrane in degradation of 2,4-dichlorophenol

机译：固定化Fe〜0 / TiO2 / ACF在复合膜上对2,4-二氯苯酚的降解具有稳定的光催化活性

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摘要

To increase the activity of immobilized catalyst by synergetic effect of adsorption and to extend the activity of Fe~0, a composite membrane with Fe~0, activated carbon fiber (ACF) and TiO2 was prepared, using dip-coating, impregnation and chemical reduction methods. The activity of the prepared membrane was evaluated for mineralizing 2,4-dichlorophenol (2.4DCP) in water under UV illumination. The co-presence of Fe~0 and TiO2 enhanced 2.4DCP degradation. ACF addition and its adsorption effect were shown in promoting 2,4DCP mineralization and TOC removal by comparing activities of composite membranes with Fe~0/TiO2/ACF or Fe~0/TiO2. Effects of pH and iron loading ratio to TiO2 on degradation rate of 2.4DCP using the composite membrane were investigated and optimized. The optimal pH was 6 and the optimal loading of Fe~0 was 1 wt% to TiO2. The repeated test results and XRD patterns of catalysts before and after reaction proved that the Fe~0/TiO2/ACF membrane was durable and stable in its photocatalytic activity.
机译：为了通过吸附的协同作用提高固定化催化剂的活性，并扩展Fe〜0的活性，采用浸涂，浸渍和化学还原法制备了Fe〜0，活性炭纤维（ACF）和TiO2的复合膜。方法。评价制备的膜的活性，以在UV照射下使水中的2，4-二氯苯酚（2.4DCP）矿化。 Fe〜0和TiO2的共存促进了2.4DCP的降解。通过比较Fe〜0 / TiO2 / ACF或Fe〜0 / TiO2复合膜的活性，表明ACF的添加及其吸附作用促进了2,4DCP的矿化和TOC的去除。研究并优化了pH和铁负载量对TiO2的影响对复合膜降解2.4DCP的影响。最佳pH为6，Fe〜0的最佳负载量为TiO2的1 wt％。反应前后的重复测试结果和催化剂的XRD图谱表明，Fe〜0 / TiO2 / ACF膜具有持久性和稳定性。

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