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利用水熱法製備六鈦酸鉀奈米柱與鈦酸鉍鈉鉀陶瓷粉末及其物性分析

郭瀚聰; Kuo, Han-tsung 莊陽德; none; 材料科學系碩士班 2012

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  • 題名:
    利用水熱法製備六鈦酸鉀奈米柱與鈦酸鉍鈉鉀陶瓷粉末及其物性分析
  • 著者: 郭瀚聰; Kuo, Han-tsung
  • 莊陽德; none; 材料科學系碩士班
  • 主題: 奈米柱; 水熱法; hydrothermal method; nanorod
  • 描述: 本實驗使用低成本的水熱法來製備六鈦酸鉀(K2Ti6O13)與鈦酸鉍鈉鉀(Bi0.5(Na1−xKx)0.5TiO3),利用密閉反應容器之高溫、高壓,大幅提升液體對固體物質的溶解度,進而反應成核成長並且析出具有奈米尺寸的粉體。本實驗設計參數包含溶劑濃度以及粉體熱處理溫度;其中溶劑濃度將決定反應是否可以進行,而熱處理之溫度將助於晶粒的成長。將所製備出來的奈米粉體利用 XRD 繞射進行結構分析, SEM 觀察表面形貌, TEM 觀察晶粒尺寸之大小, Raman散射光譜來分析其分子振動模式是否改變。實驗結果發現,當水熱處理溫度在130 ℃,時間24小時下, KOH 莫爾濃度10 M,可以得到奈米級 K2Ti6O13。而在180 ℃、12小時的水熱處理時,溶液濃度為12 M時 Bi0.5(Na1−xKx)0.5TiO3 可成功被製備,且隨著鉀摻雜量的增加,漸漸由 Bi0.5Na0.5TiO3 相轉變為 Bi0.5K0.5TiO3 相。
    In this study, the low-cost hydrothermal method is used to prepare K2Ti6O13 and Bi0.5(Na1-xKx)0.5TiO3. Using closed reaction vessel of the high temperature、high pressure, the liquid on the solubility significantly increases of the solid material, and then reaction nucleation and growth and precipitation of nano-size powder. The design parameters of this experiment contain the solvent concentration and powder hydrothermal temperature. Solvent concentration will determine the reaction; the temperature of the heat treatment will help the growth of the grain. The phase formation、grain morphology and grain size of Bi0.5(Na1-xKx)0.5TiO3 and K2Ti6O13 were examined by XRD、Raman、SEM and TEM, respectively. The experimental results showed that the nanoscale K2Ti6O13 can be composed when the temperature of the hydrothermal treatment at 130 ℃, 24 hours, 10 M KOH Molarity. Bi0.5(Na1-xKx)0.5TiO3 can be successfully prepared at 180 ℃、12 hours of hydrothermal treatment、the concentration of 12 M ,as the potassium doping amount increases gradually, the phase transfers from Bi0.5Na0.5TiO3 phase transition into Bi0.5K0.5TiO3 phase.
    碩士
  • 建立日期: 2012
  • 格式: 121 bytes
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  • 語言: 中文
  • 識別號: http://nutnr.lib.nutn.edu.tw/handle/987654321/879
  • 資源來源: NUTN IR

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