中文摘要：

分别以聚丙烯腈（PAN）纳米纤维和普通PAN 纤维为原料,经偕胺肟改性和Fe3＋ 配位反应制备了两种改性PAN 纤维铁配合物.考察和比较了偕胺肟改性和Fe3＋ 配位反应中两种纤维的腈基转化率及其配合物中铁含量的变化.然后在表征的基础上分别将两种改性PAN 纤维铁配合物作为非均相Fenton反应催化剂应用于偶氮染料活性红195的氧化降解反应中,研究了两者在暗态和可见光辐射条件下的催化降解性能.结果表明,PAN 纳米纤维比普通PAN 纤维更容易发生偕胺肟改性和Fe3＋ 配位反应.PAN 纳米纤维铁配合物对可见光吸收性能略低于普通PAN纤维铁配合物.在染料的氧化降解反应中,PAN 纳米纤维铁配合物具有更好的催化活性和稳定性,尤其在暗态时表现得更为突出.

英文摘要：

Two kinds of polyacrylonitrile （PAN）fiber Fe complexes were prepared by amidoximation and coordi-nation of ferric ions with PAN nanofibers and conventional PAN fibers as raw materials,respectively.The ni-trile group conversion of two kinds of fibers and the variation of Fe content in their complexes were investigated and compared during amidoxime modification and coordination with ferric ions.Based on the characterization, two kinds of modified PAN fiber Fe complexes were used as the heterogeneous Fenton catalysts for the oxida-tive degradation of azo dye,reactive red 1 95.Their catalytic performance was studied in the dark or under visi-ble irradiation.The results indicated that PAN nanofiber could amidoximate and coordinate with ferric ions more easily than conventional PAN fiber at the same conditions.However,the visible light adsorption of PAN nanofiber Fe complex was slightly lower than conventional PAN fiber.For the oxidative degradation of the dye, PAN nanofiber Fe complex has a much better catalytic activity and stability,especially in the dark.