水热法制备纳米ZnS.doc

Hydrothermal Preparation of ZnS Nanowires Abstract: Nanowires of ZnS were synthesised by using a surfactant assisted hydrothermal approach. The synthesis isbased on decoruposition of dipyridylzinc thiocyanate with cetyl triruethyl aruruonium bromide (CTAB) as a surfactant.The nanostructure was characterized by SEM, XRD and EDX. HR-TEM. The experiruental results indicate that thereaction tirue and concentration of surfactant play key roles in deterruining the final ruorphologies of nano-ZnS. And CTAB acts as a molecule-directing teruplate for the growth of nanowires. 摘要：以十六烷基三甲基溴化铵(CTAB)为表面活性剂，利用水热法通过二吡啶硫氰酸锌分解制备了ZnS纳米线，并用SEM、XRD.EDX和HR-TEM等方法对其纳米结构进行了表征。实验结果表明，反应时间和表面活性剂浓度是决定纳米ZnS最终形貌的关键凶素．CTAB起到了纳米线生长的分子一诱导模板作用。 Nanostructure has arose treruendous interest aruong the researchers working in all fields including physics to bioscience. From basic science to technologists for their improved physical and chemical properties and applications superior to their bulk counterparts.Since the first discovery of carbon nanotubes.one-dimensional (ID) semiconductor materials such asnanorods.nanowires. nanotubes and nanobelts/nanoribbons have attracted extensive interest because of their fundamental physical. chemical, optical, electrical andmagnetic properties, and their potential applications innano-scale devices. It is well known that ID nanostructure can play an important role both as interconnectand functional units in fabricating electronic, optoelectronic. electrocheruical and electroruechanical devices with nanoscale dimension. 1D nanostructure have been synthesized through a variety of synthes is technique such as template-directed synthesis c5l, Vaporsolid growth, vapor-liquid-solid (VLS) growthm. solu-tion-liquid-solid (SLS) growthcs] etc. A variety of metalc9Lsemiconducting oxides uo] in different ID nanoforms have been reported so far. Out of these materials. zinc sulfide. a II -VI semiconductor. is one of the most studied materials for itswide range of techno