Synthesis and characterization of hollow TiO₂ fibers using Ceiba pentandra (L.) Gaertn. (kapok) as a natural template

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• 作者：Kyung-Jun Hwang ; Dongcheon Kang ; Sukho Lee ; Cheol-Ho Hwang ; Chan Kim ; Namsu Kim ; Sungho Jin ; In-Hwa Lee ; Ju-Young Park
• 关键词：Natural biomass template ; Ceiba pentandra (L.) Gaertn. (kapok) ; Hollow TiO2 fibers ; Ceramics ; Phase transformation
• 刊名：Materials Letters
• 出版年：15 January, 2014
• 年：2014
• 卷：115
• 期：Complete
• 页码：265-267
• 全文大小：776 K

文摘

Hollow TiO₂ fibers with a high surface area were prepared by a simple manufacturing method using Ceiba pentandra (L.) Gaertn. (kapok) as a natural biomass template. Heat treatment was used for the removal of the kapok template. The uniform morphology of the hollow TiO₂ fibers with an average diameter of 10 渭m was investigated by field emission scanning electron microscopy (FE-SEM). In spite of the micrometer size of the hollow TiO₂ fibers, the walls had a high surface area (143 m²/g) and a high pore volume (0.21 cm³/g), as determined by Brunauer-Emmett-Teller (BET) analysis. Calcination was found to promote the crystalline transformation of TiO₂, as evidenced by X-ray diffraction (XRD).