树脂负载α-FeOOH异相光Fenton降解水中己烷雌酚

Heterogeneous photo-Fenton degradation of hexestrol in water over α-FeOOH-loaded resin

以Amberlite200树脂为载体,在Fe(NO3)3-HNO3体系中恒温水解制备了负载型催化剂α-FeOOH/Resin,以己烷雌酚(HEX)为目标化合物,研究了α-FeOOH/Resin的异相Fenton催化性能.结果表明,α-FeOOH/Resin异相Fenton反应能够有效降解水中的HEX,紫外光和H2O2的协同作用很大程度地提高了降解效率;pH值的降低或初始H2O2浓度的提高,均能增加HEX的降解速率;在中性条件下,HEX的光Fenton降解过程中,溶出的铁元素对降解贡献不大,异相Fenton反应起主导作用;催化剂重复使用后仍具有较好的催化活性和机械强度,说明铁在其表面负载牢固,催化剂具有一定的实用性.

A supported catalyst α-FeOOH/Resin was prepared by the hydrolysis method in Fe（NO3）3-HNO3 solution at constant temperature with Amberlite200 resin as the support.The catalytic capability of the prepared catalyst was investigated by using hexestrol（HEX） as the target compound in Fenton reaction.The results indicated that HEX was removed efficiently.The synergetic action of UV light and H2O2 remarkably enhanced the degradation of HEX.The degradation rate increased with the decrease of pH and the increase of initial H2O2 concentration.In neutral solutions,the dissolved Fe in aqueous phase leaking from the catalyst made a small contribution to the degradation of HEX,so the heterogeneous reaction was dominant in the degradation of HEX.The steady catalytic activity and good mechanic stability in reuse showed Fe was immobilized tightly on the resin and the catalyst had practical applicability.