论文部分内容阅读
以C2H5NS和In(NO3)3为前驱物,采用简单的液相法成功制备了In2S3纳米多级结构,C2H5NS作为硫源的同时也起到了模板剂的作用.研究结果表明,前驱物浓度对In2S3形貌控制起着重要作用.随着In(NO3)3/C2H5NS摩尔比从1∶1.5增加到1∶6,In2S3纳米花呈现了不同的形貌和尺寸.XRD谱图显示,In2S3纳米花晶体具有立方结构.SEM和TEM照片显示,制备的In2S3纳米结构呈多级花状结构,这种结构由纳米片堆积组装而成.通过第一性原理计算并结合实验结果对C2H5NS影响纳米片生长的机理进行了分析,结果表明C2H5NS在In2S3(001)晶面上的吸附可以有效降低晶面的表面能,起到稳定晶面的作用;纳米花的形成是在C2H5NS影响In2S3的晶面稳定性及其成核速率之间的一个协同效应.In2S3纳米晶的形貌可以通过调整反应溶液中的C2H5NS浓度来调节.
The C2H5NS and In (NO3) 3 precursors were successfully prepared by a simple liquid-phase method and the C2H5NS as a sulfur source also played a role as a template. The results show that the precursor concentration of In2S3 Morphology control plays an important role.With In (NO3) 3 / C2H5NS molar ratio increased from 1: 1.5 to 1: 6, In2S3 nanoflowers showed different morphologies and sizes.XRD spectra showed that In2S3 nanocrystal With a cubic structure.SEM and TEM photographs show that the prepared In2S3 nanostructures were multi-stage flower-like structure, which is assembled by the accumulation of nano-sheets by first-principles calculation and combined with the experimental results on C2H5NS nanosheet growth The results show that the adsorption of C2H5NS on the In2S3 (001) crystal plane can effectively reduce the surface energy of the crystal plane and stabilize the crystal plane. The formation of nano-flower is the effect of C2H5NS on the crystal plane stability of In2S3 and A synergistic effect between its nucleation rate.The morphology of In2S3 nanocrystals can be adjusted by adjusting the concentration of C2H5NS in the reaction solution.