MORPHOLOGY CONTROL OF Nb-DOPED SnO2 NANOFIBRES FORMED VIA ELECTROSPINNING: FROM HOLLOW NANOFIBRES TO DENSE NANOFIBRES

Nb-doped SnO2 nanofibres (NFs) with controlled morphologies were fabricated using an electrospinning method. In particular, structures ranging from hollow to dense were formed depending on the heating rate. To achieve this morphology control, relative mole ratios of the Nb precursor to the Sn precur...

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Published inJournal of Ceramic Processing Research Vol. 14; no. 3; pp. 371 - 375
Main Authors An, H-R, Ahn, H-J
Format Journal Article
LanguageEnglish
Published 세라믹연구소 2013
Subjects
Heating rate
Morphology
Nanostructure
Niobium
Precursors
Tin dioxide
Tin oxides
X-ray photoelectron spectroscopy
재료공학
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Summary:Nb-doped SnO2 nanofibres (NFs) with controlled morphologies were fabricated using an electrospinning method. In particular, structures ranging from hollow to dense were formed depending on the heating rate. To achieve this morphology control, relative mole ratios of the Nb precursor to the Sn precursor of 0.007, 0.021, and 0.035 were used, and the heating rate was 0.416, 0.625, 1.25, and 5 C/min. The structural, compositional, and morphological properties of the obtained NFs were evaluated by means of XRD, XPS, FESEM, and TEM. The successful formation of hollow and dense Nb-doped SnO2 NFs was found to be directly related to the use of a fast heating rate (5 C/min) and a slow heating rate (0.416 C/min), respectively. This relationship can be explained in terms of the diffusion of the ions decomposed from poly(vinypyrrolidone).
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ISSN:1229-9162
2672-152X