SDS改性Fe_(3)O_(4)活化过硫酸盐降解盐酸四环素

Removal of Tetracycline Hydrochloride by PersulfateActivated by SDS Modified Fe_(3)O_(4)

以FeSO4·7H_(2)O作原料,NaOH为沉淀剂,采用共沉淀法合成了Fe_(3)O_(4)和十二烷基硫酸钠(SDS)改性的Fe_(3)O_(4)(标记为Fe_(3)O_(4)-S)纳米材料.经XRD、FTIR、SEM等技术手段对所得样品进行了表征分析.以盐酸四环素(TC)为模拟抗生素废水,基于过硫酸盐高级氧化技术,考察了TC初始pH、催化剂的重复使用对盐酸四环素催化降解去除效果的影响.通过活性物种的捕获实验,得出单线态氧(^(1)O_(2))是该反应体系的主要活性物种,并给出了可能的催化反应机理.

Fe_(3)O_(4) and Fe_(3)O_(4) modified by sodium dodecyl sulfate(SDS)(marked as Fe_(3)O_(4)-S)nanomaterials were synthesized by coprecipitation method using FeSO_(4)·7H_(2)O as raw material and NaOH as precipitating agent.The obtained samples were characterized by technological means of XRD,FTIR,SEM,etc.Tetracycline hydrochloride(TC)solution was selected as simulated antibiotic wastewater.With the advanced persulfate oxidation technology,the initial pH of TC solution and recycling use of catalysts were investigated for the catalytic degradation efficiency of tetracycline hydrochloride.It was concluded that singlet oxygen(^(1)O_(2))was the main active species in the reaction system by trapping active species,and the possible reaction mechanism was given in this reaction system.