CAJ | 학술논문

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％.
이사정기추화안위첨가제,채용수열법제비출직경위2～5 μm적이류화목(MoS0공심미구,연구료반응온도、첨가제량화시간대MoS2물상화형모적영향.XRD、SEM、EDS、TEM、XPS표정결과표명,당반응온도위240℃시가득도결정량호적륙방상2H-MoS2,MoS2적형모주요수사정기추화안용량적영향,수착용량적증다MoS2력경료구상-화구상-불규칙퇴적상적체변.대MoS중공미구적형성궤제진행료탐토,인위재반응중사정기추화안기도료모판적작용.통과제비양품대라단명B적강해평고료이류화목중공미구적광최화성능,기대라단명적강해효솔체도90％.
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.