摘要
在聚氧乙烯五醚（NP5）,聚氧乙烯九醚（NP9）,乳化剂（OP）和环己烷组成的微乳体系中制备二氧化锡前驱物.然后再经800～820℃焙烧2.5h,成功地制备了直径为30～90nm,长5～10μm的金红石结构的二氧化锡纳米棒,并用透射电子显微镜,电子衍射,X射线衍射对二氧化锡纳米棒的结构进行了表征.用熔盐合成机理对其形成进行了讨论,初步认为是成核、长大过程形成了二氧化锡纳米棒.
SnO2 nanorods with the rutile structure were prepared by annealing precursor powders, which were produced by mixing three kinds of microemulsions (NP5, NP9, OP and cyclohexane with the volume ratio 1:1:1:2) in the presence of salts such as SnCl4, Na2CO3, NaCl respectively. The structure and morphology of SnO2 nanorods were investigated by transmission electron microscopy (TEM), selected area electron diffraction (SAED) and X-ray diffraction. The results showed that the diameter and length of the as-prepaxed nanorods were 30similar to90nm and several micrometers respectively. The nanorods were perfect crystals. The mechanism of the formation of SnO2 nanorod was simply discussed in terms of the nucleation and growth process.
出处
《无机材料学报》
SCIE
EI
CAS
CSCD
北大核心
2002年第4期691-695,共5页
Journal of Inorganic Materials
基金
国家自然科学基金(29890210)
