摘要
首先通过水热法合成了单分散空心Fe3O4磁球,之后利用蒸馏沉淀聚合将P(GMA-DVB)聚合物层包覆在Fe3O4磁球表面形成Fe3O4/P(GMA-DVB)核壳结构,巯基化处理后吸附Au纳米粒子,得到磁性核壳Fe3O4/P(GMA-DVB)-SH-Au复合催化剂。利用TEM,SEM,FTIR,XRD,TGA,VSM及UV-vis对其进行表征,并考察该催化剂在催化还原4-硝基苯酚反应中的催化性能。结果表明合成的材料粒径均匀,球形度规整,核壳结构明显,在催化反应中,Fe3O4/P(GMA-DVB)-SH-Au表现出优异的催化性能,而且经过连续8次循环使用后,催化效率仍可保持80%以上。
In this work, monodisperse hollow Fe3O4 magnetic microspheres were synthesized by hydrothermal method. And the P(GMA-DVB) polymer layer was coated on the surface of Fe3O4 microspheres by distillation precipitation polymerization method to form core-shell structure. After adsorption of Au nanoparticles, a magnetic core-shell Fe3O4/P(GMA-DVB)-SH-Au supported catalyst was obtained. The morphologies, structures and catalytic performance of the catalysts were characterized by TEM, SEM, FTIR, XRD, TGA, VSM and UV-vis. Results show that the synthesized materials have uniform particle size, regular microsphere, and obvious core-shell struc-ture. For the catalytic reduction of 4-nitrophenol, the Fe3O4/P(GMA-DVB)-SH-Au exhibits excellent catalytic performance, and the catalytic efficiency still maintains over 80% after 8 successive cycles.
作者
马明亮
杨玉莹
吕平
贾丽
贾新城
陈柳
孔令运
池丽凤
MA Ming-liang;YANG Yu-ying;LYU Ping;JIA Li;JIA Xin-cheng;CHEN Liu;KONG Ling-yun;CHI Li-feng(School of Civil Engineering,Qingdao University of Technology,Qingdao 266033,Shandong,China)
出处
《材料工程》
EI
CAS
CSCD
北大核心
2019年第6期70-76,共7页
Journal of Materials Engineering
基金
国家自然科学基金项目(51503116,51578298)
