Comparative Study on MoO₃ and H_xMoO₃ Nanobelts: Structure and Electric Transport

Abstract

In this study, the suspension of MoO3 nanobelts was first prepared in a hydrothermal way from Mo powders and H2O2 solution, which could be transformed into the suspension of H x MoO3 nanobelts under an acidic condition using N2H4·H2O as the reducing agent. Three paper-form samples made from MoO3 and H x MoO3 nanobelts (low or high hydrogen content) were then fabricated via a vacuum filtration method, followed by their structural comparative analysis such as FESEM, XRD, Raman spectra, and XPS, etc. The measurement of electric resistances at room temperature shows that the conductance of H x MoO3 nanobelts is greatly improved because of hydrogen doping. The temperature-dependent resistances of H x MoO3 nanobelts agree with the exponential correlation, supporting that the conducting carriers are the quasi-free electrons released from Mo5+. In addition, the formation process of H x MoO3 nanobelts from MoO3 nanobelts is also discussed.

A van der Waals Density Functional Study of MoO3 and Its Oxygen Vacancies

“…Molybdenum trioxide (MoO 3 ) is notable for its photo-, gaso-, thermo-and electrochromism, high catalytic activity and variable band gap. [1][2][3][4][5][6][7] In stoichiometric MoO 3 the Mo 6+ cation has an empty 4d shell, however, the material is stable, and often utilized, in an oxygen deficient state. Oxygen vacancies donate electrons to the Mo 4d states, which are responsible for many desirable and a few detrimental characteristics of the material.…”

Synthesis of LaMnO3 Nanofibers via Electrospinning

“…Over the past decade, the preparation and functionalization of one-dimensional nanostructured materials has become one of the most highly energized research fields (Hu, 2008& Kar, 2006. One-dimensional nanostructured materials, such as nanowires, nanorods, nanowhiskers and nanofibers, have stimulated great interest due to their importance in basic scientific research and potential technological applications (Huynh, 2002& Duan, 2003.…”

Preparation of LaFeO3 Porous Hollow Nanofibers by Electrospinning

“…Over the past decade, the preparation and functionalization of one-dimensional nanostructured materials has become one of the most highly energized research fields (Hu, 2008& Kar, 2006.One-dimensional nanostructured materials, such as nanowires, nanorods, nanowhiskers and nanofibers, have stimulated great interest due to their importance in basic scientific research and potential technological applications (Huynh, 2002& Duan, 2003. They are expected to play an important role as both interconnects and functional components in the fabrication of nanoscale electronic and optoelectronic devices.…”