中文摘要：

分别使用具有相似羧基含量的海藻纤维、丙烯酸接枝改性聚四氟乙烯纤维和聚丙烯纤维（ PAA-g-PP和PAA-g-PTFE）3种含羧酸纤维与Fe3＋进行配位反应,研究和比较了反应的动力学特性及影响因素.将3种含羧酸纤维铁配合物分别作为非均相Fenton反应催化剂应用于染料降解反应中,分析和评价了其配位结构和表面性能对催化活性的影响.结果表明,在所涉及的温度和浓度范围内,3种含羧酸纤维与Fe3＋的反应均很好地符合Langmuir等温吸附模型和Lagergren准二级动力学方程. Fe3＋初始浓度的增加会降低反应速率常数,而反应温度的升高则会增加配合物中Fe3＋的配合量.在相同反应条件下,海藻纤维比PAA-g-PP和PAA-g-PTFE更容易与Fe3＋发生反应,且反应速率常数和Fe3＋配合量按照下列顺序排列：海藻纤维〉PAA-g-PP〉PAA-g-PTFE.3种含羧酸纤维铁配合物都能够在染料氧化降解反应中作为非均相Fenton催化剂,且紫外光比可见光更能够提高其催化活性.海藻纤维铁配合物比其它2种含羧酸纤维铁配合物具有更好的催化作用,这与三者在配位结构和表面性能之间的显著差异有关.

英文摘要：

Three carboxylic fibers including alginate fiber, polyacrylic acid grafted polypropylene and polyte-trafluoroethylene fibers （ PAA-g-PP and PAA-g-PTFE ） with similar carboxyl contents were coordinated with Fe3＋, respectively to prepare the different Fe （Ⅲ）-carboxylic fiber complexes. The coordinating kinetics of three carboxylic fibers with Fe3＋was compared, and the effecting factors were also examined. And the catalytic performance of three Fe（Ⅲ）-carboxylic fiber complexes was then evaluated as the heterogeneous Fenton cata-lysts in the dye degradation in water. The results indicated that within the observed temperature and concentra-tion range, the coordination of carboxylic fiber with Fe3＋showed better agreement with Langmuir isotherm equa-tion and Lagergren second order equation. Increasing Fe3＋initial concentration led to a low coordination rate constant. Higher temperature increased the Fe content of the resulting complexes. Alginate fiber reacted more easily with than PAA-g-PP and PAA-g-PTFE at the same conditions. Moreover, their coordination rate con-stants and Fe contents were ranked as follow： alginate fiber ＆gt;PAA-g-PP ＆gt;PAA-g-PTFE. Three Fe（Ⅲ）-car-boxylic fiber complexes acted as the heterogeneous Fenton catalysts for dye degradation. UV irradiation could more significantly enhance the catalytic capacity of the complexes than visible irradiation. Fe （Ⅲ）-alginate fiber complex has a higher catalytic performance than the other Fe（Ⅲ）-carboxylic fiber complexes with similar Fe content, which is in relation to the big difference in coordinating structure and surface property between them.