Fe_3O_4/GO复合纳米组分催化过硫酸钠降解卡马西平  

Degradation of carbamazepine by persulfate activated with Fe_3O_4/GO nanocomposites

作　　者：邓靖[1,2] 卢遇安[1] 马晓雁[1] 倪永炯[1] 高乃云[3] 李军[1] 

机构地区：[1]浙江工业大学建筑工程学院,杭州浙江310014 [2]浙江大学建筑工程学院,杭州浙江310058 [3]同济大学环境科学与工程学院,上海200092

出　　处：《中国矿业大学学报》2015年第6期1126-1133,共8页Journal of China University of Mining & Technology

基　　金：国家科技重大专项基金项目(2012ZX07403-001);国家自然科学基金项目(51508509);浙江省自然科学基金项目(LY15E080019);天津市水质科学与技术重点实验室开放基金项目(TJKLAST-ZD-2014-01)

摘　　要：采用透射电镜、X射线衍射和傅里叶红外光谱等技术对Fe3O4/GO,Fe3O4/MWCNTs和Fe3O4纳米组分进行了表征.基于Fe3O4/GO复合纳米组分优异的催化性能,研究了催化剂投加量、过硫酸钠浓度和pH值等对其催化性能的影响.结果表明:3种纳米组分的催化性能大小依次为:Fe3O4/GO>Fe3O4/MWCNTs>Fe3O4,其中,Fe3O4/GO复合纳米组分催化过硫酸钠降解卡马西平的性能最优.Fe3O4/GO复合纳米组分的最佳投加量和过硫酸钠的最佳浓度分别为0.4g/L和1.5mmol/L.Fe3O4/GO复合纳米组分在酸性条件下表现出最佳的催化性能,随着pH值升高,催化性能降低.Fe3O4/GO复合纳米组分对3种常用氧化剂均有较好的催化效果,且催化性能大小依次为:过硫酸氢钾>H2O2>过硫酸钠.The nanocomposites of Fe3O4/GO,Fe3O4/MWCNTs and Fe3O4 were characterized by transmission electron microscopy,X-ray diffractometry and Fourier transform infrared spectroscopy.Based on the excellent catalytic performance of Fe3O4/GO nanocomposites,the effects of catalyst dosage,sodium persulfate concentrations and initial pH on the degradation efficiency were also studied.The results show that the catalytic performance of the three nanocomposites are in the order of Fe3O4/GO〉Fe3O4/MWCNTs〉Fe3O4,among them,Fe3O4/GO nanocomposites have optimal performance on the degradation of carbamazepine by sodium persulfate.The optimal dosage of Fe3O4/GO nanocomposites and persulfate concentration are 0.4g/L and 1.5mmol/L,respectively.Fe3O4/GO nanocomposites exhibits the best catalytic performance at acidic condition.With the increase of pH,the catalytic performance decreases.Fe3O4/GO nanocomposites show good catalytic performance for three common oxidants and theactivated performance follows the order of peroxymonosulfate〉H2O2〉sodium persulfate.

关 键 词：Fe3O4/GO复合纳米组分 过硫酸钠 硫酸自由基 卡马西平 

分 类 号：TU991.2[建筑科学—市政工程]