Improving and Fining of Nanostructures by Mixing W
with Mo in Metal Organic Hybrid Crystal
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Abstract
A bialloy-like
multilayered bulk single crystal consisting of [(CH<sub>3</sub>CH<sub>2</sub>)<sub>3</sub>NH)]<sub>2</sub>[W<sub>0.25</sub>Mo<sub>0.75</sub>O<sub>2</sub>(C<sub>14</sub>H<sub>6</sub>O<sub>4</sub>)<sub>2</sub>] has been synthesized, from which Mo–W-mixed
organic hybrid nanotubes with a diameter of about 50 nm and length
from tens to hundreds of nanometers were prepared by grinding and
ultrasonication. The nanotubes possess the uniformity of Mo-based
nanopipes and the rigidity of W-based nanotubules and are more delicate
and standardized than W-based nanotubules and shorter than Mo-based
nanopipes. Furthermore, the Mo–W-mixed nanotubes are disassembled
into Mo-based nanowires with a diameter of about 5 nm and lengths
in tens of nanometers and W-based nanoparticles with a diameter of
6 nm, which are much finer than the nanoarchitectures produced from
Mo- and W-based crystal isomorphs. This research offers two new methods:
one is the improvement of nanostructures in physical properties and
morphologies by bialloy-like treatment, and another is the refinement
of nanostructures compared with those made from crystal isomorphs
based on one kind of metal, by mixing metals in a crystal lattice
