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Fig. 5 | Nanoscale Research Letters

Fig. 5

From: High-Yield Preparation and Electrochemical Properties of Few-Layer MoS2 Nanosheets by Exfoliating Natural Molybdenite Powders Directly via a Coupled Ultrasonication-Milling Process

Fig. 5

a XRD patterns with normalized intensities of the pristine natural molybdenite and the exfoliated FL-MoS2 nanosheets obtained by centrifugation between 8000 and 10,000 r.p.m; b The UV-vis absorption spectra of (A) the FL-MoS2 suspension (the supernatant of the centrifugation at 8000 r.p.m) and (B) the FL-MoS2 suspension after standing for 42 days; c FT-IR spectra of the FL-MoS2 nanosheets obtained by centrifugation at 1500–8000 r.p.m and the pristine natural molybdenite; d Raman spectra for the pristine natural molybdenite (C) and the FL-MoS2 nanosheets (centrifugation at 1500–8000 r.p.m (D) and 8000–10,000 r.p.m (E), respectively, on a SiO2/Si substrate); e The N2 adsorption-desorption isotherms of the FL-MoS2 nanosheets (8000–10,000 r.p.m, S BET = 923.57 m2 g−1). All samples are obtained at the condition of R pm = 1/2, C in = 45 g L−1, P u = 280 W, ω s = 2250 r.p.m, and t ex = 4 h

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