染料廢水若直接排入到河流和湖泊，將會嚴重污染人們的使用水和農田土壤用水。此外，最常見的飲用水消毒方法是添加氯或氯副產物，儘管這些氯化物質具有顯著的消毒效果，但是消毒後的飲用水通常會有不好的味道和氣味，並且會產生潛在致癌的毒性或誘變產物，例如三鹵甲烷和氯仿。因此本研究進一步提出了一種新穎的高表面積多孔SiC-AgCl/Ag0光催化劑的製造方法，並測試該光催化劑對Orange II偶氮染料降解和環境型大腸桿菌殺菌的效果及其耐久性。多孔性光催化劑系將表面潔靜90％孔隙率的碳化矽浸入液氮中後取出並立即浸泡在8.4M硝酸銀中10秒鐘，此時固態的硝酸銀會均勻塗覆在多孔性碳化矽的骨架表面，接著將樣品浸泡在4M鹽酸溶液中，此時肋骨表面會以非均質析出氯化銀，然後將樣品在200℃加熱8小時，用以增強氯化銀和碳化矽肋骨的接著性。SEM觀察顯示奈米級針狀晶體氯化銀在碳化矽的肋骨呈現均勻交錯堆疊。光觸媒在UV光照射後，藉由XRD分析，在該光觸媒產生灰黑色銀原子簇。在可見光和UV光照射下進行Orange II偶氮染料的降解，發現濃度降解動力學遵循一級反應。此外，這種降解偶氮染料的光催化效果在經過4個循環後仍96％的降解效果。另外，環境型大腸桿菌的滅菌可在50分鐘內完成，其降解動力學也遵循一級反應。本研究製得的高表面積多孔SiC-AgCl/Ag0光催化劑不僅降低使用過多高成本的硝酸銀外，而且提高了水中污染物降解及殺菌效果且具有較高的使用可靠度。

The dye wastewater is directly discharged into rivers and lakes, it will seriously pollute people's water and the soil of the farmland. In addition, the most common disinfection method for drinking water is to add chlorine or chlorine by-products. Although this chlorination has a significant disinfecting effect, drinking water often has a bad taste and smell and will produces potentially toxic or mutagenic products such as trihalomethanes and chloroform, which may be sources of carcinogenesis, so this study further proposes an innovative procedure of producing highly porous SiC-AgCl/Ag0 photocatalyst and tested for durability and degradability of abiotic material (azo dye, Orange II) and biotic material (bacterial, E. coli). Porous photocatalyst were made by 90% porosity silicon carbide in liquid nitrogen, emerging the specimen in 8.4 M silver nitrate for 10 seconds and the solidified silver nitrate were coated on the backbone of silicon carbide. And, the specimen was emerged in 4M hydrochloride solution for precipitated out the non-homogeneous phase silver chloride on the surface of the backbone. SEM shows the needle-like nano sized crystal silver chloride was homogeneously crosslink on the silicon carbide backbone. Later on the specimen were heated at 200℃ for 8 hours to enhance the adhesion of silver chloride and silicon carbide backbone. Through the XRD analysis under the condition of UV light irradiation, grey-black silver was generated on this porous material. Degradation of azo dye was performed under visible and UV light irradiation and the concentration degradation kinetics follow the first order reaction. Furthermore, the degradability of this photocatalyst which degrades azo dye could persist at least 4 cycles been used in our experiment with 96% degradability. Sterilization of E. coli could be completed in 50 minutes and the degradation kinetics follows the first order reaction as well. The photocatalyst produced in this work not only reduced the cost of consuming too much silver nitrate, but increase the reliability and degradability of contaminant in the water.

第一章前言	1
1.1 研究緣起	1
1.2.6	氯化銀的染料降解	19
1.2.7	氯化銀光催化殺菌	23
1.3 研究目的	25
第二章實驗步驟	26
2.1研究方法及進行步驟	26
2.2 碳化矽的清洗	27
2.3 多孔性碳化矽表面披覆氯化銀薄膜	28
2.3. 1第I型的氯化銀薄膜	28
2.3.2 第II型的氯化銀薄膜	34
2.4. 多孔性碳化矽披覆氯化銀薄膜的燒結	35
2.5.多孔性氯化銀重複使用之可靠度測試	39
2.6 Orange II染料光催化降解	41
2.7.大腸桿菌光催化殺菌	45
第三章結果與討論	49
3.1 氯化銀薄膜的顯微結構	49
3.2 氯化銀薄膜的偶氮染料降解與大腸桿菌的殺菌	51
第四章結論	61
參考文獻	63

 
	圖目錄	
圖1觸媒在不同條件沈積於不銹鋼網的SEM照片	5
圖2氯化銀/銀簇能隙示意圖	14
圖3花狀氯化銀顯微結構的SEM照片	15
圖4圖4 Orange II之化學結構	18
圖5在可見光照射下Ag/AgCl(■)與N-doped TiO2 (▲) 對甲基橙染料降解	21
圖6圖6 AgCl/Ag-NP、AgCl及N-doped TiO2之UV/Vis擴散反射光譜	22
圖7不同光觸媒(N-doped TiO2、AgCl、AgCl/Ag-bulk、AgCl/AgNP50及AgCl/Ag-NP20)在可見光照射下對甲基藍染料降解效率比較	22
圖8多孔性碳化矽的多孔性結構照片	27
圖9 (a) 聚氯乙烯中空管底部用鐵氟龍薄膜給予密封，並置放在6061鋁合金板上	31
圖9 (b) 將多孔性碳化矽圓柱置入聚氯乙烯中空管底部的鐵氟龍薄膜上	31
圖9 (c) 將4.02M飽和氯化銀溶液注滿到多孔性碳化矽的孔隙內，由於間接激冷多孔性碳化矽肋骨的硝酸銀熔液會瞬間冷凍成固態	31
圖9 (d) 將25℃，4.52M飽和鹽酸溶液注入多孔性碳化矽的孔隙內，進而與多孔性碳化矽肋骨表面冰凍的硝酸銀接觸	31
圖9 (e) 鹽酸溶液會使冰凍的硝酸銀表面融化而形成薄薄的液化層，氯化銀析出所需的溶度積，使氯化銀以非均質孕核及成長於冰凍硝酸銀與液態硝酸銀的界面	32
圖9 (f) 析出反應繼續進行，最後在多孔性碳化矽的肋骨披覆氯化銀薄膜	32
圖9 多孔性碳化矽表面披覆第I形的氯化銀薄膜的製程示意圖	33
圖10不同反應時間第I型氯化銀薄膜晶態的SEM照片，反應時間分別是(a)1小時；(b)8小時；(c)20小時	36
圖11第II型的氯化銀薄膜在不同HC濃度晶態的SEM照片，反應濃度分別是（a）10M；（b）7M	37
圖12第I型氯化銀薄膜在不同燒結溫度的晶態(SEM照片)，燒結時間10hr，燒結溫度分別是(a)25℃;(b)100℃;(c)200℃;(d)300℃;
(e)400℃;(f)440℃.	38
圖13多孔性氯化銀沖水實驗的示意圖	40
圖14光降解用的光源之光譜(a)UV光;(b)可見光	42
圖15光催化降解的實驗裝置	48
圖16四種大腸桿菌光催化殺菌的實驗裝置	55
圖17氯化銀薄膜細胞瓦解，達到殺菌效果	56
圖18(a)多孔性碳化矽與薄膜降解之比較	57
圖18(b) 薄膜型與多孔性氯化銀對偶氮染料的光催化降解屬於一級動力學	57
圖18(c) 薄膜型與多孔性氯化銀對偶氮染料的光催化降解若屬於雙曲線動力學	58
圖19(a) 多孔性碳化矽與薄膜菌之比較	59
圖19(b) 薄膜型與多孔性氯化銀對大腸桿菌的光催化降解屬於一級動力學	59
圖19(c) 薄膜型與多孔性氯化銀對偶氮染料的光催化殺菌若屬於雙曲線動力學	60

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