铁氧化物/纤维类Fenton试剂制备及光催化性能

Preparation of Iron Oxide/AOCF Class-Fenton Catalyst and Photo-catalytic Properties

采用偕胺肟纤维(AOCF)为配体,与FeCl3溶液发生配位反应,在NaOH溶液中原位沉淀,再经热分解,获得一种新型铁氧化物/偕胺肟纤维(FeOx/AOCF)类Fenton催化剂.以活性红去除率为评价指标,得出催化剂的最佳制备条件:FeCl3溶液0.07mol/L,室温下配位反应1h;沉淀剂NaOH溶液浓度0.1mol/L,50℃恒温水浴下反应4h;热分解温度150℃,时间10h.SEM、EDS和XRD分析表明,纤维表面附着的片状物主体为三氧化二铁.考察了FeOx/AOCF催化剂对活性红、活性黄和甲基橙溶液的光催化降解活性,结果显示,在可见光下,FeOx/AOCF室温下可将3种物质几乎全部降解,且催化降解反应均符合一级反应动力学特征.

A new type of iron oxide/amidoxime fiber FeOx/AOCF Fenton catalyst was prepared,with the AOCF as ligand,the coordination reaction with FeC13 solution,in NaOH solution in situ precipitation, by thermal decomposition.With reactive red removal rate as the evaluation index, the optimal preparation conditions of the catalyst was obtained..0.07 mol/L FeC13 solution,at room temperature with reaction 1 h;precipitant concentration of NaOH solution 0.1 mol/L, 50 ℃ for constant temperature water bath reaction 4 h;thermal decomposition temperature of 150 ℃,time 10 h. The surface morphology and surface composition of FeO./AOCF were characterizated by SEM,EDS and XRD.The results showed that the sheet material on the surface of AOCF is mainly the ferric oxide.The photocatalytic results showed that under visible light Reactive Red, reactive yellow and methyl orange solution can be almost completely degraded at room temperature.And catalytic degradation reaction follows first-order reaction kinetics.