NH_4V_3O_8一维纳米线的溶液相生长和表征

Solution-Phase Growth and Characterization of One-Dimensional Nanowires of NH_4V_3O_8

利用V2O5和(NH4)2SO4为起始的反应物,在180°C实验条件下,通过溶液相方法生长出了一维纳米结构的NH4V3O8纳米线。所有合成产物的相组成、结构和形貌分别通过X-射线衍射(XRD)、扫描电子显微镜(SEM)、透射电子显微镜(TEM)和选区电子衍射(SAED)等分析技术进行分析和表征。合成的NH4V3O8纳米线其平均直径约为50 nm,长度在几十微米以上。选区电子衍射证实合成的纳米线具有单晶本质。NH4V3O8纳米线的形成可能与其具有内在的长链和层状结晶学结构以及溶液中硫酸根离子在NH4V3O8特定晶面的选择吸附的协同作用有关。

One-dimensional NH4V3O8 nanowires were successfully grown by a solution-phase growth technique from the initial materials of V205 and （NIL）2SO4 at 180℃. The synthesized products were characterized by XRD, SEM, TEM and SAED analytical techniques. The nanowires have a mean diameter of 50 nm and length up to several micrometres. SAED analysis confirms the single-crystalline nature of the NH4V3O8 nanowires. The formation of NH4V3O8 nanowires can be attributed to the synergy of intrinsic long-chair and layered structures of NH4V3O8 crystals and selective adsorption of SO4^2- anions existed in solution to the special facets of NH4V3O8.