SnO<sub>2</sub>纳米棒的固相反应制备与表征

SnO₂纳米棒的固相反应制备与表征

摘要: 利用室温固相反应方法,合成了SnO₂纳米颗粒前驱物。在NaC l、KC l等熔盐介质中,在600～785℃对前驱物进行焙烧,前驱物纳米颗粒自组装生长形成SnO₂纳米棒。利用TEM、XRD和XPS对SnO₂纳米棒形貌、成分进行了表征和分析,SnO₂纳米棒直径为20～80 nm,长度从几百纳米到几个微米。研究了SnO₂纳米颗粒前驱体熔盐介质中的生长,探讨了SnO₂纳米颗粒在熔盐介质中的固相转变生长机理。

Abstract: SnO₂ nanorods with rutile structure were prepared by calcining precursor powders.The powders were prepared by solid state reaction at room temperature.The precursor grew into SnO₂ nanorods via self assembly during being annealed at 660-785℃ in molten salt medium.The structure and morpho1ogy of SnO₂ nanorods were investigated by X-ray diffraction（XRD）,transmission electron microscopy（TEM） and X-ray photoelectron spectrum（XPS）.The formation processes of SnO₂ nanorods was explained by solid state transformation mechanism.