尺寸可控空心碳球的水热合成

Hydrothermal Synthesis of Size-Controlled Hollow Carbon Spheres

采用水热法,以糖类(葡萄糖、蔗糖、淀粉)为原料,制备了单分散的碳空心球,解决了水热条件下难以在较大范围内控制尺寸大小的问题,也可作为制备其它球形中空材料的模板。进一步通过扫描电镜(SEM)、透射电镜(TEM)、X-射线粉末衍射(XRD)、红外光谱(FT-IR)对最终产物的形貌、组成进行表征。结果表明纳米碳空心球尺寸分布在3.0～6.5μm之间,表面含有官能团-OH,-C=O,COOH。

Size-controlled hollow carbon spheres were fabricated by hydrothermal treatment of sucrose in the absence of other additives, such as templates, surfactants. The hollow structure and composition of carbon spheres were characterized by XRD, FTIR, TEM and SEM. The results indicate that the diameter of carbon spheres is tunable by adding various carbon sources, on the range of 0.5~5 μm. On the other hand, functional groups of carbon spheres contain OH, C=O, and COOH, which are available for further surface functional modification.