Morphology-Controlled Flame Synthesis of Single, Branched, and Flower-like α-MoO3 Nanobelt Arrays

We report an atmospheric, catalyst-free, rapid flame synthesis technique for growing single, branched, and flower-like α-MoO3 nanobelt arrays on diverse substrates. The growth rate, morphology, and surface coverage density of the α-MoO3 nanobelts were controlled by varying the flame equivalence ratio, the source temperature, the growth substrate temperature, and the material and morphology of the growth substrate. This flame synthesis technique is a promising, alternative way to synthesize one-dimensional metal oxide nanostructures in general.