以葡萄糖为碳源, 通过水热法制备了碳量子点, 并通过Ｘ射线衍射(XRD)、透射电镜(TEM)、紫外-可见吸收光谱、荧光光谱和傅里叶红外光谱(FTIR)等方法对样品的结构、形貌和光学性能进行表征。结果显示: 以葡萄糖为碳源制备的碳量子点近似球形, 大小均匀, 分散性良好, 无团聚现象。其发射波长依赖于激发波长, 在紫外灯下发出明亮的绿光。

Carbon nanoparticles were synthesized via hydrothermal oxidation of glucose. The carbon dots were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), ultraviolet-visible spectrophotometry, fluorescene spectrophotometry and Fourier transform infrared spectrophoto-metry (FTIR). The results indicate that the carbon dots have appropriate spherical morphology, uniform size, good dispersion, non-agglomeration. The carbon dots can emit bright green photoluminescence under UV excitation, and exhibit excitation-dependent PL behavior.