CO_(2)响应磁性纳米粒子对阴离子染料可逆吸附  

Reversible adsorption of anionic dyes by CO_(2)-responsive magnetic nanoparticles

作　　者：陈勒妞 郭赞如 聂玉静 CHEN Leniu;GUO Zanru;NIE Yujin(College of Chemistry,Chemical Engineering and Environmental Science,Minnan Normal University,Zhangzhou,Fujian 363000,China)

机构地区：[1]闽南师范大学化学化工与环境学院,福建漳州363000

出　　处：《闽南师范大学学报（自然科学版）》2024年第2期34-44,共11页Journal of Minnan Normal University：Natural Science

基　　金：福建省自然科学基金项目(2022J01900,2023J01916)。

摘　　要：通过在磁性四氧化三铁(Fe_(3)O_(4))纳米粒子表面包覆一层二氧化硅(SiO_(2)),然后通过聚合的方法在SiO_(2)表面聚合甲基丙烯酸二乙基氨基乙酯(DEA),得到CO_(2)响应型磁性纳米粒子(Fe_(3)O_(4)@SiO_(2)@PDEA).采用红外光谱仪(IR)对其组成进行了表征,通过透射电子显微镜(TEM)观察了纳米粒子的微观形貌,并将纳米粒子应用于染料的吸附.结果表明:Fe_(3)O_(4)@SiO_(2)@PDEA不仅具有核-壳结构,还在表面形成一层聚合物链.纳米粒子还表现出磁响应性和CO_(2)刺激的可逆分散性.在CO_(2)的刺激下,纳米粒子能够快速吸附阴离子型染料皂黄(MY)、诱惑红(ARAC)、新胭脂红(NC),其中对MY最大吸附量高达595 mg/g.此外,通过染料释放,在CO_(2)刺激下纳米粒子可以多次循环使用.The CO_(2)-responsive magnetic nanoparticles(Fe_(3)O_(4)@SiO_(2)@PDEA)were synthesized by polymerization of 2-diethylaminoethyl methacrylate(DEA)on the surface of magnetic ferric oxide(Fe_(3)O_(4))nanoparticles coated with a silicon oxide layer.The composition of the nanoparticles was characterized by infrared spectroscopy(IR).The morphology of the nanoparticles was observed by transmission electron microscopy(TEM).The nanoparticles were applied to the adsorption of dyes.The results show that Fe_(3)O_(4)@SiO_(2)@PDEA not only has a core-shell structure,but also was formed a layer of polymer chains on the surface.The nanoparticles also exhibit magnetic responsiveness and reversible dispersion upon CO_(2)stimulation.Under the stimulation of CO_(2),the nanoparticles could rapidly adsorb anionic dyes such as myosin yellow(MY),allura red(ARAC)and neocarmine(NC).The maximum adsorption capacity for MY was as high as 595 mg/g.In addition,the nanoparticles can be recycled many times under the stimulation of CO_(2)through dye release.

关 键 词：CO_(2)刺激响应 纳米粒子 磁性 可逆吸附 

分 类 号：O63[理学—高分子化学]