Fabrication of Polycrystalline ZnO Nanotubes from the Electrospinning of Zn2+/Poly(acrylic acid)

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• 作者：Wen-Shiang Chen ; De-An Huang ; Hung-Cheng Chen ; Tzung-Ying Shie ; Chi-Hsiang Hsieh ; Jiunn-Der Liao ; Changshu Kuo
• 刊名：Crystal Growth & Design
• 出版年：2009
• 出版时间：September 2, 2009
• 年：2009
• 卷：9
• 期：9
• 页码：4070-4077
• 全文大小：1104K
• 年卷期：v.9,no.9(September 2, 2009)
• ISSN：1528-7505

文摘

Polycrystalline zinc-oxide nanotubes were fabricated via the polymer-assisted electrospinning technique. Chemically dissolved zinc in a poly(acrylic acid) aqueous solution was formulated to produce electrospun Zn²⁺/polyanion nanofibers. Polyanions were simultaneously employed as zinc ion stabilizers and electrospinning carriers. A calcination process initiated the breakdown of Zn²⁺/vinyl-COO⁻ species at about 200 °C prior to the main decomposition of the polymer, which occurred at a higher temperature. With increasing calcination temperatures, the growth of ZnO nanograins formed the outer layers of fibers with hollow domains. The ZnO grain sizes were mainly determined by the calcination temperatures. Furthermore, nanotube diameters and tube thicknesses were successfully manipulated by the electrospinning formula and process. The fabrication of electrospun zinc/poly(acrylic acid) nanofibers and the formation of hollow nanotubes, as a function of calcination temperature, were investigated and discussed.