本論文利用簡易之化學浴法合成錫酸鋅奈米顆粒，不需使用昂貴儀器，並可在短時間內合成大量粉末。為了改善光觸媒效果，本實驗利用沉澱附著法將金奈米顆粒裝飾於錫酸鋅表面，形成異質結構的金/錫酸鋅奈米結構。在紫外光照射下能夠增加光觸媒的效果，並利用金在奈米尺度下所產生的表面電漿共振效應吸收可見光波段，以達到可見光光觸媒的效果。
實驗使用醋酸鋅與錫酸鈉作為成長錫酸鋅之前驅物，去離子水及乙二醇為溶劑，於室溫下合成。經過20 分鐘的紫外光照射，錫酸鋅的降解率能夠達到100%，經過五次的循環測試後，降解能力依然存在，並沒有太多的損失，如此證明了錫酸鋅擁有高度的穩定性。此外，金/錫酸鋅利用了金的表面電漿共振效應，在可見光照射120 分鐘後，也能將10ppm 的羅丹名B 染料完全降解。如此高的降解能力是來自於錫酸鋅奈米顆粒結構中的氫氧根，氫氧根能夠增加反應速率，並且產生氫氧根自由基將羅丹名B 染料分解。

In this study, ZnSn(OH)6 nanocubes were synthesized by chemical bath method, which is low cost process and suited for mass production. In order to improve
photocatalytic activity, gold nanoparticles were grown on the surface of the ZnSn(OH)6 nanocubes by deposition-precipitation method to obtain Au/ZnSn(OH)6 heterojunction nanocubes. Subsequently, the Au/ZnSn(OH)6 nanocubes, photocatalytic activity was enhanced by surface plasmon resonance (SPR) effect under ultraviolet (UV) and visible-light irradiation.
Zinc acetate and sodium stannate source materials were acted as a solute solutions while deionized water and ethylene glycol were used as solvent to prepare ZnSn(OH)6 nanocubes at room temperature. The photodegradation ratio can be reached 100% within 20 min under ultraviolet-light illumination using ZnSn(OH)6 nanocubes. The ZnSn(OH)6 nanocubes achieved about five times cycling test without
an observable loss of photocatalytic activity, which indicated the high stability in the reaction medium. Moreover, the Rhodamine B (RhB) aqueous solution (10 ppm) was fully decomposed in 120 minutes by the Au/ZnSn(OH)6 nanocubes because of SPR effect. The highly photocatalytic activity of the Au/ZnSn(OH)6 and the ZnSn(OH)6 nanocubes is attributed to the hydroxyl groups, which enhance the reaction rate and enable the hydroxyl radicals to participate in the reaction for destruction of the RhB solution.

第一章 緒論 1
1.1 前言 1
1.2 研究動機 2
第二章 文獻回顧 3
2.1 錫酸鋅的製備方法 3
2.1.1 水熱法(hydrothermal method) 3
2.1.2 固態反應法(solid state reaction) 12
2.1.3 物理氣相沉積法 13
2.1.4 化學氣相沉積法(Chemical vapor deposition, CVD) 14
2.1.5 化學溶液法(chemical bath method) 18
2.2 表面電漿共振(Surface plasmon resonance, SPR)效應 27
2.2.1 表面電漿共振機制 27
2.3 奈米金粒子製備方法 40
第三章 實驗步驟與方法 46
3.1 實驗方法及步驟 46
3.2 實驗與分析儀器 48
1. 紫外光燈源 48
2. 可見光燈源 48
3. 冷場發射掃描式電子顯微鏡(FESEM) 49
4. 高效能可變溫多功能X光繞射儀 (XRD) 50
5. 高解像能穿透式電子顯微鏡(High resolution transmission electron microscope, HRTEM) 51
6. 紫外-可見光光譜分析儀(UV-visible spectrophotometer ) 52
7. 光致發光光譜儀及拉曼光譜儀 (PL & RAMAN) 53
8. X光光電子能譜儀（X-ray photoelectron spectroscopy, XPS） 55
第四章 結果與討論 56
4.1.1 SEM形貌分析 56
4.1.2 XRD晶體結構分析 58
4.1.3 ZnSn(OH)6結構特性分析 59
4.1.4 拉曼光譜分析(Raman) 61
4.1.5 穿透式電子顯微鏡(TEM)分析 61
4.1.6 XPS分析 65
4.2 光觸媒催化實驗與分析 66
4.2.1 實驗方式與架構 66
4.2.2 羅丹明B溶液光分解測試 67
4.2.3 光催化降解實驗 68
4.2.4 光催化分解染料機制 71
4.2.5 反應速率常數 75
第五章 結論 79
第六章 未來展望 80
參考文獻 81

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