【摘要】 通过水热处理的方法,在氧化铝模板表面生成的MnS纳米线阵列上合成了六方相MnS花状球。利用场发射扫描电镜,透射电子显微镜,高分辨透射电子显微镜,选区电子衍射和X射线衍射对制备的样品进行了分析与表征。结果表明MnS花状球是在MnS纳米线阵列上生长的,纳米线的直径为70～80nm,与氧化铝模板的孔径一致且结晶性较好。随着阳极氧化氧化铝模板(AAO)的孔洞长度的减少,MnS花状球的数量快速增加。提出了MnS复合纳米结构可能的生长机制:氧化铝模板和反应中硫脲分解产生的H2S气体对产物的最终形貌有很重要的影响。室温光致发光光谱显示在420nm处存在一个很强的MnS带边发射峰。更多还原

【Abstract】 Flower-like MnS spheres on the surface of MnS nanowire arrays were synthesized via a hydrothermal treatment using anodized aluminum oxide(AAO) as the template. The as-prepared samples were characterized by FESEM, TEM, HRTEM, SAED, and XRD. The results show that MnS flower-like spheres are grown on MnS nanowire arrays. The diameter of the MnS nanowires is 70～80 nm corresponding to the pore diameter of the AAO template used, and flower-like MnS spheres are consisted of single-crystal nanowire. The number of flower-like MnS spheres increases with the reduction of the pore length of the AAO template. The room-temperature PL spectrum shows a strong emission peak at about 420 nm corresponding to the MnS band edge emission. Furthermore, the growth mechanism for the MnS nanostructure has been proposed. AAO template and the air bladders formed via thiourea decomposition to H2S gas under hydrothermal treatment may play an important role in the formation of MnS flower-like spheres sitting on MnS nanowire arrays.更多还原