报道了一种改进的液相剥离方法以实现MoS2二维纳米片的高效制备.在MoS2球磨的过程中引入轻质CaCO3粒子作为微磨球,引入少量N-甲基吡咯烷酮作分散剂,在400 r/min下球磨一定时间得到充分研磨细化的MoS2纳米粒子.将其与含适量HCl的45%的酒精水溶液充分混合后,再进行高速剪切液相剥离,可实现MoS2二维纳米片的高效制备.利用纳米粒度仪、AFM、TEM、拉曼光谱等对所制得的MoS2二维纳米片进行了表征.结果表明,这种改进的球磨结合高速剪切的液相剥离方法可获得的最高产量达54.43 mg/mL.%An improved liquid-phase exfoliation method for the preparation of MoS22D nanosheets combined ball-milling and high-speed shearing was reported.During the ball-milling process,CaCO3 particles were incorporat-ed as micro milling balls and drops of NMP was also added as liquid lubrication.The mixture of MoS2 ,CaCO3 and NMP was ball-milled at 400rpm for a certain time.After that,the mixture was washed and dissolved in 45% ethanol/water with proper amount of HCl to get rid of CaCO3 .Then high-speed shearing was used to exfo-liate the ball-milled MoS2 nanoparticles,and high-speed centrifugation was used to precipitate the bulk MoS2 particles in the mixture,thus the supernatant full of MoS2 nanosheets was obtained.Malvern Zetasizer,SEM, AFM,TEM,Raman was used to characterize the obtained MoS2 nanosheets.It turned out that the MoS22D nanosheets were successfully obtained using this method,and the highest yield 54.43 mg/ml was achieved.
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