Thermal oxide synthesis and characterization of Fe_3O_4 nanorods and Fe_2O_3 nanowires  

作　　者：JIAO Hua1,2 & YANG HeQing1 1 Key Laboratory of Macromolecular Science of Shaanxi Province, School of Chemistry and Materials Science, Shaanxi Normal University, Xi’an 710062, China 2 Department of Chemistry and Chemical Engineering, Weinan Teacher’s University, Weinan 714000, China 

出　　处：《Science China Chemistry》2009年第5期599-604,共6页中国科学（化学英文版）

基　　金：Supported by the Fund of Weinan Teacher’s University (Grant No. 08YKZ008);the National Natural Science Foundation of China (Grant No. 20573072);the Doc-toral Fund of Ministry of Education of China (Grant No. 20060718010)

摘　　要：Fe3O4 nanorods and Fe2O3 nanowires have been synthesized through a simple thermal oxide reaction of Fe with C2H2O4 solution at 200-600℃ for 1 h in the air. The morphology and structure of Fe3O4 nanorods and Fe2O3 nanowires were detected with powder X-ray diffraction, scanning electron microscopy and transmission electron microscopy. The influence of temperature on the morphology development was experimentally investigated. The results show that the polycrystals Fe3O4 nanorods with cubic structure and the average diameter of 0.5-0.8 μm grow after reaction at 200-500℃ for 1 h in the air. When the temperature was 600℃, the samples completely became Fe2O3 nanowires with hexagonal structure. It was found that C2H2O4 molecules had a significant effect on the formation of Fe3O4 nanorods. A possible mechanism was also proposed to account for the growth of these Fe3O4 nanorods.Fe3O4 nanorods and Fe2O3 nanowires have been synthesized through a simple thermal oxide reaction of Fe with C2H2O4 solution at 200-600℃ for 1 h in the air. The morphology and structure of Fe3O4 nanorods and Fe2O3 nanowires were detected with powder X-ray diffraction, scanning electron microscopy and transmission electron microscopy. The influence of temperature on the morphology development was experimentally investigated. The results show that the polycrystals Fe3O4 nanorods with cubic structure and the average diameter of 0.5-0.8 μm grow after reaction at 200-500℃ for 1 h in the air. When the temperature was 600℃, the samples completely became Fe2O3 nanowires with hexagonal structure. It was found that C2H2O4 molecules had a significant effect on the formation of Fe3O4 nanorods. A possible mechanism was also proposed to account for the growth of these Fe3O4 nanorods.

关 键 词：thermal OXIDE process NANORODS NANOWIRES C2H2O4 IRON SHEET 

分 类 号：TB383.1[一般工业技术—材料科学与工程]