Growth of hexagonal tungsten trioxide tubes

Growth and characterization of sodium–tungsten oxide nanobelts with U-shape cross section

“…Finally, regions among them disappeared due to sintering process. A similar trend was also observed by Wu et al [9] for the growth of hexagonal tungsten trioxide tubes. In addition, some nanowires can be seen in the islands (Fig.…”

Nanoporous‐Walled Tungsten Oxide Nanotubes as Highly Active Visible‐Light‐Driven Photocatalysts

“…Moreover, most methods using templates or thermal evaporation techniques are intrinsically expensive and give low yields and purities. [18][19][20][21] The development of cheap and template-free methods suitable for the large-scale synthesis of high-purity WO 3 NTs is therefore the primary objective of this work. Choi et al have reported a simple process for the synthesis of tungsten oxide (W 18 O 49 ) nanorods in ethanol solvent using tungsten hexachloride (WCl 6 ) as a raw material.…”

Important considerations for effective gas sensors based on metal oxide nanoneedles films

“…The influence of solvent on the morphology of AACVD tungsten oxide films was recently considered in detail in reference [8]. Similar non-aligned and mat-like tungsten oxide NN, growth by self-catalysed direct vapour-solid mechanism, have been reported previously [11,24], as well as other nanostructures such as tube-like [25], rod-like [26], or flake-like [27]. According to reference [24], NN mat-like morphologies are effective structural arrangements for gas sensing applications, which suggests that NN films deposited at 500 ºC from an acetone/toluene mixture (Figure 2c) are attractive for gas sensor fabrication.…”