有机硫源溶剂热法合成CdS纳米晶体

以二硫化四甲基秋兰姆((TMTD)作为有机硫源，分别在苯、水-苯溶剂中于不同温度、不同时间溶剂热法合成了CdS纳米晶体。采用FE-SEM、XRD和FTIR对晶体的结构和成形机理进行了研究。结果表明，溶剂热温度比反应时间对晶体形貌的形成影响更大。CdS纳米晶体是立方与六角的混合晶型。此外，溶剂的种类也是影响CdS纳米晶体结构和成形的重要因素，并且对花形CdS纳米晶体进行了阴极发光(CL)光谱的研究。

Solvothermal Synthesis of CdS Nanocrystals with Organic Sulphur Source

CdS nanocrystals were synthesized by a solvothermal method with tetramethyl thiuram disulfide(TMTD) as a sulphur source in benzene or water-benzene solvent at different temperatures for different periods of time. The structure and formation mechanism of CdS nanocrystals were investigated by field emission -scanning electron microscope(FE-SEM), X-ray diffraction(XRD) and fourier transform infrared spectroscopy(FTIR), respectively. The results indicated that the solvothermal temperature played a more important role than reaction time in formation of crystal morphology. CdS nanocrystals were found to be a mixed phase of cube and hexagon. Furthermore, the type of solvent was also an important influencing factor for the structure and formation of CdS nanocrystals. The cathodoluminescence(CL) of the obtained flower-like CdS nanocrystals was also studied.