Encapsulation of molybdenum oxide MoO3 into ordered mesoporous silica materials is demonstrated using different synthetic routes. Either supramolecular polyoxometalates of the “Müller type” or Na2MoO4 were used as precursors. Molybdenum oxide (MoO3)-silica hybrid materials were characterized using nitrogen-sorption experiments, transmission electron microscopy, small-angle X-ray scattering, and...

A perfect ohmic contact is formed at the interface of indium tin oxide (ITO) and N,N'-di(naphthalene-1-yl)-N,N'-diphenyl-benzidine (NPB) using ReO3 as the interfacial layer. The hole injection efficiency is close to 100% at the interface, which is much higher than those for interfacial layers of 1,4,5,8,9,11-hexaazatripheylene hexacarbonitrile (HAT-CN) and MoO3. Interestingly, the ReO3 and MoO3...

Employing a buffer gas mixture of CO and CO2, the equilibrium oxygen partial pressure was varied across the Mo/MoO3 proximity line by arying the ratio of concentration of the two gases, as described in an earlier communication. This led to the reduction of MoO in one case and 3 xidation of the reduced phase (Mo or MoO2) in the other with a concomitant variation in the microstructural features o...

Atomic force microscopy was used to characterize the nanometerscale structural evolution of the MoO3 (010) surface during reaction with hydrogen at 400◦C. Two primary surface modifications were identified. First, water vapor, when present in the reactor either as an impurity or as an oxidation product, accelerates the volatilization of MoO3 and leads to the formation of surface voids. The prese...

New MoO3 or WO3 modified CeO2-ZrO2 aerogel catalysts were elaborated using the sol gel method combined to supercritical drying for NO-SCR by NH3 in excess of O2. XRD, N2-Physisorption, NH3-TPD, H2-TPR and DRUV-Vis spectroscopy used analyse samples. The results reveal that all powders (ZrO2, CeO2-ZrO2, MoO3-ZrO2, WO3-ZrO2, MoO3-CeO2-ZrO2 WO3-CeO2-ZrO2), calcined at 500 °C, are nanostructured mes...

Band structure of transition metal oxides plays a critical role in many applications such as photo-catalysis, photovoltaics, and electroluminescent devices. In this work we report findings that the band structure of MoO3 can be significantly altered by a distortion in the octahedral coordination structure. We discovered that, in addition to epitaxial type of structural strain, chemical force su...

Novel graphite-molybdenum carbide nanocomposites (G-Mo2C) are synthesized by a typical solid state reaction with melamine and MoO3 as precursors under inert atmosphere. The characterization results indicate that G-Mo2C composites are composed of high crystallization and purity of Mo2C and few layers of graphite carbon. Mo2C nanoparticles with sizes ranging from 5 to 50 nm are uniformly supporte...

The present research paper deals with the oxidation process of molybdenum ore. The main target of the present study is the up-gradation of MoO3 from roasted molybdenum ore by a leaching process without waste generation. The most important application of hydrometallurgical processing is the leaching process of the ore and it is the primary process to make pure metal from ore. The present investi...

The development of suitable approaches for the synthesis ultrathin transition-metal dichalcogenide (TMD) catalysts is required to engineer phases, intercoupling between different in-plane defects, and edges hence maximize their catalytic performance hydrogen production. In this work, we report a simple one-step hydrothermal approach three-dimensional (3D) network self-assembled metallic MoS2/Mo...