Anatase TiO2 nanolayer coating on cobalt ferrite nanoparticles for magnetic photocatalyst
Anatase TiO2 nanolayer coating on cobalt ferrite nanoparticles for magnetic photocatalyst
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DOI：
10.1016/j.matlet.2005.06.071
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发表时间：
2005-11-01
影响因子：
3
通讯作者：
Zou, GT
中科院分区：
文献类型：
--
作者：
Fu, WY;Yang, HB;Zou, GT
制备了具有核壳结构的TiO 2/CoFe 2 O 4复合纳米粒子。采用共沉淀法制备了CoFe 2 O 4核纳米粒子，采用溶胶-凝胶法制备了TiO 2壳纳米晶，并在450 ℃下热处理。采用透射电子显微镜（TEM）和X射线衍射（XRD）对复合纳米粒子的形貌和晶体结构进行了表征。所制备的复合颗粒可以用作磁性光催化剂，其可以通过施加的磁场被流化和回收，从而提高可回收流体的分离和混合效率。对这些粉体的磁性和光催化活性进行了评价。(C)2005 Elsevier B. V.保留所有权利。
TiO2/CoFe2O4 composite nanoparticles with a core-shell structure have been obtained. The core CoFe2O4 nanoparticles were synthesized via co-precipitation method, and the shell TiO2 nanocrystals were derived via sol-gel technology followed by heat-treatment at 450 degrees C. The morphology and the crystalline structure of composite nanoparticles were characterized by transmission electron microscopy (TEM) and X-ray diffraction, respectively. The as-prepared composite particles can be utilized as a magnetic photocatalyst, which can be fluidized and recovered by an applied magnetic field enhancing both the separation and mixing efficiency for recyclable fluids. Magnetic properties and photocatalytic activities of these powders have been evaluated. (C) 2005 Elsevier B.V. All rights reserved.