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宽pH范围的类Fenton纤维催化剂降解罗丹明B的研究
Activation of hydrogen peroxide by activated carbon fiber coupled with Fe(Ⅲ)-alginate for degradation of Rh B
【摘要】 采用活性炭纤维耦合海藻酸铁制得类Fenton纤维催化剂(Alg-Fe@ACFs),在中性条件下活化H2O2催化降解染料罗丹明B(RhB)。Alg-Fe@ACFs在H2O2浓度为50mmol/L,pH值为212的范围内对RhB的降解率随着时间的延长能达到100%,有效的拓展了传统Fenton反应的pH适用范围;同时Alg-Fe@ACFs和H2O2体系在重复使用5次后对RhB的降解率仍可达到94.1%;并通过羟基自由基的测定探讨了Alg-Fe@ACF/H2O2体系可能的催化机理。
【Abstract】 An efficient Fenton-like catalytic fiber(Alg-Fe@ACFs)was prepared to degrade Rh B at neutral pH.the Alg-Fe@ACFs/H2O2 catalytic system exhibited remarkable catalytic activity across a wider pH range(212),which was efficient to expand the pH range for the traditional Fenton reaction.Moreover,the catalyst presented excellent regeneration capability and sustained catalytic ability in these experiments.After repeated use 5times for RhB decolorization,the rate still can reach 94.1%.Through the measurement of hydroxyl radicals(·OH),it was proposed that a possible catalytic oxidation mechanism was in Alg-Fe@ACF/H2O2 system.
【Key words】 activated carbon fiber; ferric alginate; catalyzing degradation; Rh B;
- 【文献出处】 化工新型材料 ,New Chemical Materials , 编辑部邮箱 ,2017年02期
- 【分类号】X703;O643.36
- 【被引频次】5
- 【下载频次】222