The Effect of Sonication Parameters on the Thickness of the Produced MoS2 Nano-Flakes

• Autorzy: Taghavi Najme Sadat , Afzalzadeh Reza

Identyfikatory

DOI

10.24425/aoa.2021.136558

• Języki publikacji: EN

Abstrakty

EN

Liquid Phase Exfoliation (LPE) is a common route to produce two-dimensional MoS₂ nanosheets. In this research, MoS₂ powder is exfoliated by an ultrasonic probe (sonicator) in a water-ethanol solution. It is reported that MoS₂ as a prototype 2D Transition Metal Dichalcogenide, has a band gap that increases with a decreasing number of layers. There are some factors that affect the average band gap energy value and the thickness of the exfoliated flakes. We varied different parameters of the ultrasonic probe like power, pulse percentage and time duration of sonication to investigate the effects on the number of MoS₂ layers. Our findings from the UV-Visible spectra, SEM, FESEM and TEM images indicate that the minimum thickness for these samples was acquired at 50% of the input power of the sonicator we used (∼65 W) and the optimum pulse percentage is 50%. The current study also found that the average amount of band gap increased with an increase in sonication time, and then remained unchanged after 60 minutes.

Słowa kluczowe

EN

ultrasonic probe; 2D MoS2 band gap; power output; pulse percentage; sonication time

• Wydawca: Instytut Podstawowych Problemów Techniki PAN ; Komitet Akustyki PAN ; Polskie Towarzystwo Akustyczne
• Czasopismo: Archives of Acoustics
• Rocznik: 2021
• Tom: Vol. 46, No. 1
• Strony: 31--40
• Opis fizyczny: Bibliogr. 51 poz., fot., rys., tab., wykr.

Twórcy

autor

Taghavi Najme Sadat

• Faculty of Physics, K. N. Toosi University of Technology, Tehran 15418-49611, Iran

autor

Afzalzadeh Reza

• Faculty of Physics, K. N. Toosi University of Technology, Tehran 15418-49611, Iran

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Uwagi

Opracowanie rekordu ze środków MNiSW, umowa Nr 461252 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2021).