Department of Chemistry, Northeast Normal University, 5268 Renmin Street, Changchun 130024, People's Republic of China.
ACS Appl Mater Interfaces. 2011 Feb;3(2):590-6. doi: 10.1021/am101171a. Epub 2011 Feb 3.
One-dimensional ZnO-carbon nanofibers (CNFs) heteroarchitectures with high photocatalytic activity have been successfully obtained by a simple combination of electrospinning technique and hydrothermal process. The as-obtained products were characterized by field-emission scanning electron microscopy (FE-SEM), energy-dispersive X-ray (EDX) spectroscopy, transmission electron microscopy (TEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and IR spectrum. The results revealed that the secondary ZnO nanostructures were successfully grown on the primary CNFs substrates without aggregation. And, the coverage density of ZnO nanoparticles coating on the surface of the CNFs could be controlled by simply adjusting the mass ratio of zinc acetate to CNFs in the precursor during the hydrothermal process for the fabrication of ZnO-CNFs heterostructures. The obtained ZnO-CNFs heteroarchitectures showed high photocatalytic property to degrade rhodamine B (RB) because of the formation of heteroarchitectures, which might improve the separation of photogenerated electrons and holes. Moreover, the ZnO-CNFs heteroarchitectures could be easily recycled without the decrease in photocatalytic activity due to their one-dimensional nanostructural property.
一维 ZnO-碳纳米纤维（CNFs）异质结构具有高光催化活性，通过静电纺丝技术和水热法的简单组合成功获得。所得产物通过场发射扫描电子显微镜（FE-SEM）、能谱（EDX）、透射电子显微镜（TEM）、X 射线衍射（XRD）、X 射线光电子能谱（XPS）和红外光谱进行了表征。结果表明，在没有聚集的情况下，次级 ZnO 纳米结构成功地在初级 CNFs 基底上生长。并且，通过简单地调整水热过程中前驱体中醋酸锌与 CNFs 的质量比，可以控制 ZnO 纳米粒子在 CNFs 表面的覆盖密度，从而制备 ZnO-CNFs 异质结构。由于形成了异质结构，所获得的 ZnO-CNFs 异质结构对罗丹明 B（RB）具有高的光催化性能，因为可能提高光生电子和空穴的分离。此外，由于其一维纳米结构特性，ZnO-CNFs 异质结构可以很容易地回收，而不会降低光催化活性。
