TY - JOUR
T1 - A facile approach for the synthesis of magnetic separable Fe 3 O 4 @TiO 2 , core-shell nanocomposites as highly recyclable photocatalysts
AU - Xin, Tiejun
AU - Ma, Mingliang
AU - Zhang, Hepeng
AU - Gu, Junwei
AU - Wang, Shuangjie
AU - Liu, Mengjiao
AU - Zhang, Qiuyu
PY - 2014/1/1
Y1 - 2014/1/1
N2 - A facile and efficient approach for the fabrication of Fe 3 O 4 @TiO 2 nanocomposites with a good core-shell structure has been demonstrated. The approach employed involved the coating of successive titania shell on Fe 3 O 4 core using a mixed solvent method with the catalysis of ammonia followed by the crystallization of TiO 2 through solvothermal method. The as-obtained core-shell structure was composed of a central Fe 3 O 4 core with a strong response to external fields, whereas the outer titanium oxide coating was useful for the degradation of organic contaminants. The results showed that Fe 3 O 4 @TiO 2 nanocomposites exhibited high degree of crystallinity, excellent magnetic properties at room temperature. Furthermore, the as-prepared Fe 3 O 4 @TiO 2 nanocomposites exhibited good photocatalytic activity toward the degradation of Rhodamine B (RhB) solution, which meant that they can be used as efficient and conveniently recoverable photocatalysts. In addition, the mechanism of coating by ammonia catalysis was also investigated.
AB - A facile and efficient approach for the fabrication of Fe 3 O 4 @TiO 2 nanocomposites with a good core-shell structure has been demonstrated. The approach employed involved the coating of successive titania shell on Fe 3 O 4 core using a mixed solvent method with the catalysis of ammonia followed by the crystallization of TiO 2 through solvothermal method. The as-obtained core-shell structure was composed of a central Fe 3 O 4 core with a strong response to external fields, whereas the outer titanium oxide coating was useful for the degradation of organic contaminants. The results showed that Fe 3 O 4 @TiO 2 nanocomposites exhibited high degree of crystallinity, excellent magnetic properties at room temperature. Furthermore, the as-prepared Fe 3 O 4 @TiO 2 nanocomposites exhibited good photocatalytic activity toward the degradation of Rhodamine B (RhB) solution, which meant that they can be used as efficient and conveniently recoverable photocatalysts. In addition, the mechanism of coating by ammonia catalysis was also investigated.
KW - Core-shell structure
KW - Mixed solvent method
KW - Recyclable photocatalysts
KW - Solvothermal method
UR - https://www.scopus.com/pages/publications/84888431215
U2 - 10.1016/j.apsusc.2013.09.108
DO - 10.1016/j.apsusc.2013.09.108
M3 - 文章
AN - SCOPUS:84888431215
SN - 0169-4332
VL - 288
SP - 51
EP - 59
JO - Applied Surface Science
JF - Applied Surface Science
ER -