Nanostructured WO3 – Synthesis and Properties

Lee Siang Chuah; G. Tang

doi:10.4028/www.scientific.net/MSF.819.280

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HomeMaterials Science ForumMaterials Science Forum Vol. 819Nanostructured WO3 – Synthesis and Properties

Nanostructured WO₃ – Synthesis and Properties

Abstract:

Porous tungsten oxide (WO₃) nanofibers were synthesized by electrospinning aqueous solutions of polyvinylpyrrolidone (PVP) and ammonium metatungstate (AMT). The as-spun fibers and their annealing were studied by scanning electron microscope (SEM). SEM results showed that the WO₃ fibers have a large amount of pores with diameters ranging from 50 nm to 100 nm, and pure monoclinic WO₃ nanoscaled fibers formed between 500 and 600 °C. When a higher temperature (700 °C) was used, the tungsten oxide nanofibers totally disintegrated. When heated at 600 °C, the fibers broken into nanorods by the mechanical pressure. However, when the annealing treatment was low (500 °C), the fiber-like crystalline structure that can be seen. When the optimal temperature was used, the structure of the obtained WO₃ nanofibers with novel morphology and crystallinity were captured.

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Materials Science Forum (Volume 819)

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280-283

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https://doi.org/10.4028/www.scientific.net/MSF.819.280

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Online since:

June 2015

Authors:

Lee Siang Chuah*, G. Tang

Keywords:

Tungsten Trioxide, WO₃

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