磷酸锌微球的制备及光学性能(英文)

在油酸存在下,采用简单的溶剂热方法制备单分散的磷酸锌微米球。通过X射线粉末衍射、傅里叶红外光谱、扫描电子显微镜、能谱等方法对磷酸锌产品的结构和形貌进行表征。实验结果表明,制备的磷酸锌产品结晶性良好,并且产品的形貌可以通过油酸添加量和氢氧化钠的加入量实现有效的控制。该产品具有自发光性能,在400nm长波紫外光的激发下,可以发射出明亮的蓝光。推测可能的发光机理为与碳相关的表面杂质或者缺陷所致。     

溶剂热法制备一维锶磷灰石纳米棒及其发光性能研究(英文)

One-dimensional strontium hydroxyapatite(Sr-HAp) nanorods were successfully synthesized by a sim-ple solvothermal method.The products were characterized via X-ray diffraction(XRD),Fourier transform infrared(FT-IR),cold field emission scanning electron microscopy(FESEM),transmission electron microscopy(TEM),photoluminescence(PL) excitation and emission spectra.The experimental results indicated that oleic acid as a surfactant played a key role in confining the growth of the Sr-HAp powders.A possible formation mechanism of the one-dimensional nanorod was proposed and elaborated.Moreover,the as-obtained Sr-HAp samples showed an in-tense and bright emission band centered at 460 nm under long-wavelength UV light excitation and the contents of NaOH used in the synthetic process had an obvious impact on the optical performance of Sr-HAp powders.The possible luminescent mechanism of the Sr-HAp samples was discussed.