定向生长的一维zno微纳米棒阵列的液相合成与表征物理化学专业论文.docxVIP

因素，它直接影响着后期1．D 因素，它直接影响着后期1．D ZnO微／纳米棒阵列生长的取向性、均匀性和纳米棒粒径 的大小。 (3)表面活性剂对1．D ZnO微／纳米棒阵列的影响 采用陈化法制备ZnO纳米晶种，在1．D ZnO微／纳米棒阵列生长的最优条件的基础 上，添加不同的离子型表面活性剂制备1．D ZnO微／纳米棒阵列，研究生长液中的添加 剂对1．D ZnO微／纳米棒阵列的影响。实验结果表明，当溶液中添加阳离子表面活性剂 CTAB且浓度较低时，产品沿C轴的的取向性和均匀性均有所提高，阵列中纳米棒的粒 径减小。当添加阴离子表面活性剂SDS和SDBS时，均能使产品的粒径明显减小：但 由于二者的结构不同，随浓度增加，SDS能使阵列的取向性增强，而SDBS则导致ZnO 纳米棒沿基底的垂直定向性明显降低。 关键词：ZnO，纳米棒阵列，制备，晶种，表面活性剂 AbstractDue Abstract Due to its excellent optical properties and electron transportation ability, one-dimensional(1-D)ZnO nanomaterials have shown great potential in the field of electronic sane-devices and optoelectronic narlo-devices．Especially,1-D ZnO nanowire／rod arrays grown on substrates can be used in short wave lasers and Graetzel solar battery,which has received considerable attention among many researchers．At present,highly aligned ZnO Dane-arrays are usually synthesized through vapor-phase processes or solution processes． Despite the products synthesized by vapor-phase processes have high purity,prefect crystallization and controllable sizes，the reaction conditions involve in expensive apparatus， higher temperature and complicated procedures，SO it is very hard to prepare ZnO nano．arrays in large scale，which constrains its applications in many nanodevices．Compared with vapor-phase process，the solution method is more advantageous in perpendicularly orientated growth of ZnO nano·arrays，owing to its simple process，low temperature and non．pollution， which makes it an effective method for preparing large-scale ZnO nanowire／rod arrays． In this paper，we report a simple solution route to grow well-aligned c-oriented 1-D ZnO micro／nanorod arrays on ITO glass．Firstly,we prepare ZnO nanoparticle seeds on ITO glass using Zn(N03)2 and(CH2)6N4 as raw materials．Then，we synthesized well．defined 1．D ZnO micro／nanorod arrays on the above substrates in strong basic solution,using Zn(N03)2 and NaOH as growth resources．It is proved to be a mild and profit method with low temperature(85C)and short reac