磺酸化铁酸镍磁性石墨烯复合材料活化过硫酸盐降解水中2-氨基苯并噻唑的研究  

Magnetic graphene modified by sulfonic acid ionic liquid surfactant to degrade 2-aminobenzothiazole in water by activated PMS

作　　者：马森 高仕谦[1] 王振峰 张占恩[1] Ma Sen;Gao Shiqian;Wang Zhenfeng;Zhang Zhanen(School of Environmental Science and Engineering,Suzhou University of Science and Technology,Suzhou 215009;School of Public Health and Management,Wenzhou Medical University,Wenzhou 325035)

机构地区：[1]苏州科技大学环境科学与工程学院,苏州215009 [2]温州医科大学公共卫生与管理学院,温州325035

出　　处：《化工新型材料》2023年第4期208-213,219,共7页New Chemical Materials

基　　金：浙江省公益技术研究计划项目(LGF19B070008);江苏省研究生实践创新计划(SJCX19_0850)。

摘　　要：采用微波法在水-离子液体表面活性剂的体系,制备了磺酸化铁酸镍磁性石墨烯(GS/NiFe_(2)O_(4))复合材料,通过扫描电镜(SEM)、透射电镜(TEM)、X射线衍射(XRD)、振动样品磁强计(VSM)、X射线光电子能谱(XPS)、BET/BJH的方法分析材料的表观结构。使用GS/NiFe_(2)O_(4)活化过硫酸盐(PMS)降解水中的2-氨基苯并噻唑(ABT),并通过超高效液相色谱-串联质谱法对降解率进行定量分析。经条件优化得出,在pH=3、PMS浓度为4mmol/L,投加15mg GS/NiFe_(2)O_(4)的条件下,30min内可完全降解20mg/L的2-氨基苯并噻唑。考察了阴阳离子对ABT的降解过程影响:Cl^(-)对ABT的降解有促进作用,HCO^(-)_(3)具有抑制作用,而Cu^(2+)具有双重作用。通过自由基猝灭实验发现SO^(-)_(4)·为主导自由基、·OH为辅。最后对ABT的降解过程进行了产物分析且证明了GS/NiFe_(2)O_(4)具有良好的循环利用性能。The sulfonated nickel ferrite magnetic graphene(GS/NiFe_(2)O_(4))composite was prepared by microwave method in the system of water-ionic liquid surfactant.The surface structure of the composite was analyzed by SEM,TEM,XRD,VSM,XPS and BET/BJH.GS/NiFe_(2)O_(4) activated persulfate(PMS)was used to degrade 2-aminobenzothiazole(ABT)in water,and the degradation rate was quantitatively analyzed by ultra high performance liquid chromatography tandem mass spectrometry.The optimized conditions showed that it could completely degrade 20mg/L of 2-aminobenzothiazole within 30 minutes at pH=3,PMS concentration of 4mmol/L and 15mg GS/NiFe_2O_4 addition.The effects of anions and cations on the degradation process of ABT were investigated:Cl^(-) promoted the degradation of ABT,while HCO^(-)_(3) inhibited it,and Cu^(2+)had a dual effect.The radical quenching experiment revealed that SO^(-)_(4)·was the dominant radical and·OH was the auxiliary.Finally,the degradation process of ABT was analyzed,which demonstrated that GS/NiFe_(2)O_(4) had good recycling performance.

关 键 词：磺酸化 铁酸镍磁性石墨烯 2-氨基苯并噻唑 过硫酸盐 降解 

分 类 号：X52[环境科学与工程—环境工程]