頁籤選單縮合
題名 | 奈米級二氧化鈦光觸媒磺化改質之研究=Study in the Modification of Photocatalyst Titanium Dioxide Nano-Material by Sulfonation |
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作者 | 楊肇政; 許信儀; 呂正源; | 書刊名 | 僑光技術學院通觀洞識學報 |
卷期 | 3 2004.12[民93.12] |
頁次 | 頁91-95 |
分類號 | 468.8 |
關鍵詞 | 奈米級二氧化鈦; 光觸媒; 溶膠凝膠法; 磺化; Titanium dioxide nano-material; Photocatalyst; Sol-gel method; Sulfonation; |
語文 | 中文(Chinese) |
中文摘要 | 本研究利用熔膠凝膠法製備奈米級二氧化鈦光觸媒粉體並以硫酸進行粉體之改質。探討不同的硫酸濃度、燒結溫度等操作變數對光觸媒特性的影響。溶液的組成為Ti(OC4H9)4 : IPA : HCl : H2O : acac = 1 : 17 : 0.08 : 4 : 0.01 (molar ratio)於T=30℃下進行熔膠凝膠反應,並在室溫下熟化五天,熟成後的乾膠直接進行磺化處理。由XRD結果得知,燒結溫度於400℃下即可產生銳鈦礦之結晶構造,而燒結溫度提升至800℃時可觀察出已有部份之金紅石結晶構造產生。經由FT-IR分析光譜圖可知於1040 cm-1處為=S=O振盪、1140 cm-1處為=SO2振盪。由TGA結果顯示未磺化之二氧化鈦燒結溫度於500℃時其重量變化已趨近穩態,反之經由磺化處理的粉體必須達700℃才達穩態。EA分析結果指出硫化物含量隨著燒結溫度升高而減少。 |
英文摘要 | The titanium dioxide nano-material powder was prepared by using sol-gel method. In the preparation of titanium dioxide sol, the molar ratio of the reactants is: Ti(OC4H9)4:IPA:HCl:H2O:acac=1:17:0.08:4:0.01. The reaction was carried out at 30℃ and the aging was accomplished at room temperature for five days. The dried powder was used for the modification of photocatalyst titanium dioxide by sulfonation, and the effect of different treating variables was also studied. In this work, the modified powder was characterized by X-ray diffraction, the results indicated that the annealed temperature reached 400℃, high activated anatase form titanium dioxide photocatalyst was obtained. When annealed temperature exceeded 800℃, the rutile form was produced. Besides, the FTIR analysis showed that the =S=O and =SO2 bonding group existed on the surface of modified titanium dioxide. The results of TGA analysis proved that the modified titanium dioxide has higher decomposition temperature than the original, owing to the sulfide forming. EA (element analysis) was also discussed in this study. |
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