2020年3月1日 · Raman spectroscopy is a veritable tool to differentiate between Mo O stretch of tetrahedral species, and the terminal Mo O stretch of polymeric octahedral species [[21], [22], [23]]. Hence, the aim of this work is to study effect of pre-calcination of titania before loading of molybdenum oxide using XRD and Raman as a case study. 2. Experimental.

X-ray diffraction and Raman spectroscopy showed the typical structural transformation of MoO3 into MoO x C y and MoO2. These structural changes occur preferentially on the {0k0} planes. After...

The structure and chemical bonding of the different morphologies of MoS2 are investigated via X‐ray diffraction (XRD), Raman spectroscopy, scanning electron microscopy (SEM), and X‐ray ...

2009年8月1日 · X-ray diffraction (XRD), X-ray photoemission (XPS) as well as ultraviolet photoemission (UPS) spectroscopy experiments on MoO 2 powders were carried out to examine the bulk, the core level energies, and the electronic …

2021年2月20日 · In this study, two types of MoO 3 has been successfully synthesized by sol–gel (SG-MoO 3) and hydrothermal (HT-MoO 3) methods. The structure, morphology, and functional groups of the synthesized samples have been characterized by X-ray diffraction (XRD), scanning, and transmission electron microscope (SEM and TEM), and Fourier-transform ...

Crystal structure and morphology of the Na2MoO4 material were investigated by X-ray diffraction (XRD), scanning electron microscopy (SEM), and energy-dispersive X-ray spectroscopy (EDS). The...

Quantitative XRD analysis reveals a sigmoidal shape of the evolution of the MoO 3 and MoO 2 phases during reduction of MoO 3 and an increase in the crystallite size of the phases present. This Oswald ripening indicates that a nucleation−growth kinetic mechanism governs the reduction of MoO 3 under the conditions studied.

2018年1月25日 · The optical, structure and morphology of MoO 3 nanoparticles are investigated by UV–Visible spectroscopy (UV–Vis), Fourier transform infrared (FT-IR) spectroscopy, X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive X-ray analysis (EDX), transmission election microscopy (TEM) and impedance spectroscopy.

2011年8月4日 · Molybdenum oxide (MoO 3) with two different crystal structures (hexagonal and orthorhombic) was successfully synthesized by an effective and environmental friendly hydrothermal method. The phase confirmation and structural properties of the sample was elucidated by X-ray diffraction (XRD) method.

MoO 3−x samples were prepared under different temperature and gas atmosphere conditions. The samples, which are all of the crystallographic MoO 3 structure, have been investigated by XRD, SEM, diffuse reflection (DR) UV/VIS and Raman spectroscopies to characterize their properties as a function of the different concentrations of oxygen ...