| Autor: |
Butanovs, Edgars, Kadiwala, Kevon, Gopejenko, Aleksejs, Bocharov, Dmitry, Piskunov, Sergei, Polyakov, Boris |
| Rok vydání: |
2022 |
| Předmět: |
|
| Zdroj: |
Appl. Surf. Sci. 590, 153106 (2022) |
| Druh dokumentu: |
Working Paper |
| DOI: |
10.1016/j.apsusc.2022.153106 |
| Popis: |
One-dimensional (1D) nanostructures - nanowires (NWs) - exhibit promising properties for integration in different types of functional devices. Their properties can be enhanced even further or tuned for a specific application by combining different promising materials, such as layered van der Waals materials and conventional semiconductors, into 1D-1D core-shell heterostructures. In this work, we demonstrated growth of GaN-MoS2 and GaN-WS2 core-shell NWs via two different methods: (1) two-step process of sputter-deposition of a sacrificial transition metal oxide coating on GaN NWs followed by sulfurization; (2) pulsed laser deposition of few-layer MoS2 or WS2 on GaN NWs from the respective material targets. As-prepared nanostructures were characterized via scanning and transmission electron microscopies, X-ray diffraction, micro-Raman spectroscopy and X-ray photoelectron spectroscopy. High crystalline quality core-shell NW heterostructures with few-layer MoS2 and WS2 shells can be prepared via both routes. The experimental results were supported by theoretical electronic structure calculations, which demonstrated the potential of the synthesised core-shell NW heterostructures as photocatalysts for efficient hydrogen production from water. |
| Databáze: |
arXiv |
| Externí odkaz: |
|
