2019年3月22日 · Recently, monolayer molybdenum disulphide (MoS 2) has emerged as a promising and non–precious electrocatalyst for hydrogen evolution reaction. However, its performance is largely limited by the...

2022年7月1日 · The content of atomic Co species embedded in MoS 2 reaches up to 2.85 at.%, and its atomic dispersion has been systematically confirmed by using XRD, HRTEM, XPS, and XAS characterizations. The Co-doped MoS 2 sample exhibits excellent HER activity, achieving overpotentials of 67 and 155 mV at j = 10 mA cm −2 in 1.0 M KOH and 0.5 M H 2 SO 4 ...

These interesting structures were further characterized using transmission electron microscopy (TEM) and high resolution electron microscopy (HRTEM) in order to elucidate the structural...

Here we present a comprehensive, time-resolved, in-situ study of the growth of MoS2 thin film from MoO3 by sulfurization using the grazing-incidence wide-angle X-ray scattering (GIWAXS) in ...

In situ transmission electron microscope (TEM) provides a real−time technique to observe the interface structure at atomic resolution. Herein, we loaded bimetal... ... NiPt TONPs/MoS 2...

2016年7月14日 · Our study shows direct observations of MoS2 growth as the temperature evolves, and sheds light on the controllable orientation and grain size of two-dimensional materials.

3 天之前 · Fig. 3 b and 3c show the HRTEM images of monolayer WS 2 and MoS 2 regions, ... (X MoS2), respectively. Their exciton lifetimes are extracted and summarized in Fig. 4 d. It can be seen that the excitons at different positions have different lifetimes, and those at the interface have the shortest ones.

2016年7月20日 · MoS 2 nano-sheets were characterized using XRD, Raman, elemental analysis, TG/DTG, SEM, and HRTEM. The characterization results show that intercalated MoS 2 , intermediate MoS 2 with intercalated and semi-crystallized structures, and well crystallized hexagonal MoS 2 (denoted as 2H-MoS 2 ) were prepared by varying crystallization conditions ...

As environmental regulations increase, more selective transition metal sulfide (TMS) catalytic materials for hydrotreating applications are needed. Highly active TMS catalysts become more and more desirable triggering new interest for unsupported Co-promoted MoS 2 -based systems that have high volumetric activity as reported here.

2020年8月1日 · A structural analysis of the material by high-resolution transmission electron microscopy (HRTEM) show partially disordered nanocrystals of a size between 5–10 nm. Both X-ray and electron diffraction reveal large fluctuations in lattice spacing, where the average c-axis stacking is increased and the in-plane lattice parameter is locally ...