MoS₂ Photoelectrodes for Hydrogen Production: Tuning the S-Vacancy Content in Highly Homogeneous Ultrathin Nanocrystals.

ABSTRACT: Tuning the electrocatalytic properties of MoS₂ layers can be achieved through different paths, such as reducing their thickness, creating edges in the MoS₂ flakes, and introducing S-vacancies. We combine these three approaches by growing MoS₂ electrodes by using a special salt-assisted chemical vapor deposition (CVD) method. This procedure allows the growth of ultrathin MoS₂ nanocrystals (1-3 layers thick and a few nanometers wide), as evidenced by atomic force microscopy and scanning tunneling microscopy. This morphology of the MoS₂ layers at the nanoscale induces some specific features in the Raman and photoluminescence spectra compared to exfoliated or microcrystalline MoS₂ layers. Moreover, the S-vacancy content in the l

SUBMITTER: Jimenez-Arevalo N 

PROVIDER: S-EPMC10865293 | biostudies-literature | 2023 Jul

REPOSITORIES: biostudies-literature