收录:
摘要:
The home-made monodisperse SiO2 submicrospheres were coated with beta-FeOOH by a new solution growth method. The size of SiO2, submicrospheres had great influence on the microstructures of beta-FeOOH coatings. When the average diameter of the submicrospheres was 250 nm, the beta-FeOOH coating was uniform and the average thickness of beta-FeOOH coatings was about 35 nm after the first cycle of coating. The thickness of p-FeOOH coatings increased greatly with multistep coating. After three cycles of coating, the thickness of beta-FeOOH coatings increased to about 100 nm. The core-shell composites were immersed in NaOH solution (5%, mass fraction) at 40 degrees C for 24 h to remove the silica cores and then calcined at 600 degrees C for 24 h to prepare the monodisperse alpha-Fe2O3, hollow submicrospheres. The alpha-Fe2O3 shells in the hollow submicrospheres were constructed with alpha-Fe2O3 nanorods interconnected.
关键词:
通讯作者信息:
电子邮件地址:
来源 :
CHEMICAL JOURNAL OF CHINESE UNIVERSITIES-CHINESE
ISSN: 0251-0790
年份: 2010
期: 6
卷: 31
页码: 1098-1102
1 . 0 0 0
JCR@2022
ESI学科: CHEMISTRY;
JCR分区:3
中科院分区:4