Study On Preparation And Luminescent Properties Of Cerium Doped Cuo Nanowires

Nanomaterials have acquired more favor among researchers because of their potential applications in these respects such as magnetics and optics.The controlled fabrication of one-dimensional nanomaterials has been a hot research topic in the field of nanomaterials.Many research groups have obtained one-dimensional nanomaterials with good morphology and stable properties through different preparation methods.In this experiment,we synthetized CuO and CuO-Ce nanowire arrays into anodized aluminum oxide template using electrochemical deposition and post-heat treatment methods.We also analyzed the structure and luminescence properties of the copper oxide nanowires with and without cerium doped via X-ray diffraction(XRD),transmission electron microscopy(TEM),X-ray photoelectron spectroscopy(XPS),and so on.The results showed that the content of Ce in CuO-Ce nanowires gradually increased with the increase of deposition potential(-0.4V,-0.35 V,-0.3V).The scanning electron microscopy results indicated that the prepared nanowires were uniform in size,smooth in surface and good in morphology.The prepared nanowire was the single crystal structure with high crystallinity,which can be demonstrated by the apparent dot-like structure in the selected area electron diffraction pattern(SEAD)and the strongly sharp main diffraction peak in the X-ray diffraction pattern.As the content of cerium in the CuO-Ce nanowires increase,the peak position of CuO-Ce nanowires in the XRD pattern was gradually shifted to the left of the peak position of the CuO nanowires,which indicated that the CuO crystal structure had changed due to the cerium elements being successfully incorporated into CuO.We found the interplanar spacing of the(-202)became wider throught Fourier transform(FT)on the high-resolution transmission electron microscopy(HRTEM)image,which was consistent with the conclusion of the peak position shifting to the left in the XRD pattern.This further confirmed that the cerium element had incorporated into the copper oxide lattice.The fluorescence spectrum study showed that the luminescence intensity of CuO-Ce was higher than that of CuO,and the luminescence intensity of CuO-Ce nanowires gradually grew strong with the increase of cerium content.This indicated the cerium can promote luminescence.The cerium-doped copper oxide nanomaterials will have a broad application scope in the field of luminescence just due to their good optical property.