以四丁基溴化铵为添加剂,采用水热法制备出直径为2～5 μm的二硫化钼(MoS0空心微球,研究了反应温度、添加剂量和时间对MoS2物相和形貌的影响.XRD、SEM、EDS、TEM、XPS表征结果表明,当反应温度为240℃时可得到结晶良好的六方相2H-MoS2,MoS2的形貌主要受四丁基溴化铵用量的影响,随着用量的增多MoS2历经了球状-花球状-不规则堆积状的递变.对MoS中空微球的形成机制进行了探讨,认为在反应中四丁基溴化铵起到了模板的作用.通过制备样品对罗丹明B的降解评估了二硫化钼中空微球的光催化性能,其对罗丹明的降解效率达到90％.%Molybdenum disulfide (MoS2) hollow microspheres with the diameter of 2～5 μm were synthesized using tetrabutylammonium bromide (Bu4NBr) as an additive by a hydrothermal method.The effect of temperature,time and concentration of Bu4NBr on the phase and morphology of MoS2 was investigated.The as-prepared MoS2 was characterized by X-ray diffraction (XRD),scanning electron microscope (SEM),energy dispersive spectroscopy (EDS),transmission electron microscope (TEM),and X-ray photoelectron spectra (XPS).The results indicate that hexagonal 2H-MoS2 can be formed at 240 ℃ with good crystallinity.The morphology of MoS2 crystal is greatly affected by the dosage of Bu4NBr.With the increase in the concentration of Bu4NBr,the morphology of MoS2 changes from microspheres,via ball-flowers,to irregular packing.The templating mechanism is proposed to explain the formation of MoS2 hollow structures.Photocatalytie results show that the degradation rate of rhodamine B can reach to 90％ by the MoS2 hollow microspheres under visible light irradiation.
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