Synthesis and Growth of Au Nanostructures on MoS2 Interface

Authors T.I. Borodinova1, V.I. Styopkin2, A.A. Vasko2, V.Ye. Kutsenko2, O.A. Marchenko2

1F.D. Ovcharenko Institute of Biocolloid Chemistry, NAS of Ukraine, 42, Acad. Vernadsky Blvd., 03680 Kyiv, Ukraine

2Institute of Physics of NAS of Ukraine, 46, Nauka Ave., 03028 Kyiv, Ukraine

Issue Volume 10, Year 2018, Number 3
Dates Received 03 January 2018; revised manuscript received 14 June 2018; published online 25 June 2018
Citation T.I. Borodinova, V.I. Styopkin, A.A. Vasko, et al., J. Nano- Electron. Phys. 10 No 3, 03017 (2018)
PACS Number(s) 61.46.Hk, 81.10.-h
Keywords Gold (8) , Nanoparticles (70) , Nanoprisms, Polyvinylpyrrolidone.

Wet chemical synthesis gives wide possibilities for fabrication of noble metal nanoparticles (NP), which characteristics depend on many factors. The article is devoted to study of formation of Au nanostructures on MoS2 substrate from growth solution, containing ethanol, ethylene glycol, glycerin, polyvinylpyrrolidone (PVP) and HAuCl4. The study shows that obtained particles in this system are nearly spherical NP, wires, flat triangle and hexagonal nanoprisms (NPRs). NPs and dendritic structures growth without PVP and only presence of stabilizer leads to formation and further evolution of NPRs on MoS2 substrate. For the first time it was also observed a growth of incomplete triangle and hexagonal NPRs, consisting of NP with size 50-100 nm. These incomplete nanoprisms transform to full shapes later on. Our experiments reveal that changing of component concentrations, ratio [PVP]/[HAuCl4] and time of synthesis have a dominant influence on the shape of obtained NP. The possible mechanisms of NP growth on MoS2 are discussed.

List of References