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姓名 紀沛宏(Pei-Hung Jih) 查詢紙本館藏 畢業系所 化學學系 論文名稱 高溫高壓水熱法合成鋇硼酸鹽及其結構與性質研究
(High-Temperature, High-Pressure Hydrothermal Synthesis, Structures and Properties of Barium Borates)相關論文 檔案 [Endnote RIS 格式]
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摘要(中) 本論文以高溫高壓水熱法合成兩個鋇硼酸鹽和一個鋇鎵硼酸鹽:Ba6B12O21(OH)6 (A1)、Ba4B11O18.7(OH)3.6.0.5H2O (A2)、Ba3Ga2[B3O6(OH)]2[B4O7(OH)2] (A3)。先由單晶X光繞射儀,解析出化合物的晶體結構,再以實測粉末X光繞射圖與理論計算X光繞射圖比對,確定樣品為純相後再進行二次倍頻強度(SHG)量測、紅外光譜儀(FT-IR)進行分析
,並以價鍵和理論計算出化合物中各原子價數作為參考。
化合物A1為P32非中心對稱空間群的透明無色柱狀晶體,結構中的BO3平面三角形及BO4四面體以共用氧原子的共角方式連接形成[B4O7(OH)2],進而無限延伸成一維單鏈,各單鏈之間再由鋇離子和氧的配位來穩定結構,而結構中的OH基也從FTIR得到驗證。化合物A2為P21/c中心對稱空間群的透明無色針柱狀晶體,為較複雜的層狀結構,每層有兩個由BO3平面三角形及BO4四面體所組成的單鏈,鏈和鏈之間又由[B5O12]∞所連接形成層,而結晶水就存在於結構中的層與層之間,而結構中的OH基也從FTIR光譜中得到驗證。化合物A3為Fdd2非中心對稱空間群的透明無色片狀晶體,為層狀結構化合物,每一層中由BO3平面三角形、BO4四面體及GaO4四面體組成上下兩個都具有九員環的2D無限延伸層[Ga2B6O12(OH)2]∞,且鋇離子就坐落於九員環中,中間再由[B4O7(OH)2]來連接形成層狀結構。其中A1經SHG量測後倍頻效率為SiO2的0.35倍並確認為非中心對稱空間群,A3也成功解決Ba3Ga2[B3O6(OH)]2[B4O7(OH)2] 中因為鋇離子分裂而造成R1值過高的問題。摘要(英) Two barium borates, Ba6B12O21(OH)6 (A1) and Ba4B11O18.7(OH)3.6.0.5H2O (A2), and one barium gallium borate, Ba3Ga2[B3O6(OH)]2[B4O7(OH)2] (A3), were synthesized by the supercritical hydrothermal method and structurally chacterized by single-crystal X-ray diffraction and a combination of techniques such as infrared spectroscopy and second harmonic generation. Powder X-ray diffraction patterns were measured to confirm the purity of the samples for property and spectroscopy measurements,
The structure of A1 contains 1-D borate chains built by the fundamental building unit [B4O7(OH)2]. Compound A2 contains [B5O12]∞ sheets which are linked by two types of borate chains to form a double-layer structure. Compound A3 has a double-layer structure containing two [Ga2B6O12(OH)2]∞ sheets linked by [B4O7(OH)2] groups. The compound was previously reported in the literature with unsatisfactory refinement results. The high-temperature, high-pressure hydrothermal method produced high quality crystals of A3 with considerably better refinement results. The presence of OH groups in these compounds were confirmed by infrared spectroscopy. A1 adopts a non-centrosymmetrric structure as indicated by second harmonic generation measurement results.關鍵字(中) ★ 水熱合成
★ 非線性光學關鍵字(英) 論文目次 摘要 I
Abstract III
目錄 IV
圖目錄 VII
表目錄 X
附錄 XI
第一章 緒論 1
1-1 簡介 1
1-1-1 非線性光學原理 2
1-1-2 非線性光學材料 3
1-1-3 非線性光學實際應用 4
1-1-4 硼酸鹽在非線性光學上的應用 6
1-2 合成方法 10
1-2-1 水熱反應(Hydrothermal Reaction) 10
1-2-2 藥品一覽表 12
1-3 鑑定方法 13
1-3-1 儀器簡介 13
1-3-2 單晶X光繞射儀與解構分析 14
1-3-3 粉末X光繞射儀 (PXRD) 20
1-3-4 紅外線光譜儀 21
1-3-5 倍頻訊號測量(SHG) 22
1-4 研究成果摘要 23
第二章 鋇硼酸鹽 24
2-1 前言 24
2-2 論文研究動機 25
2-3 實驗部分 27
2-3-1 Ba6B12O21(OH)6 (A1)合成條件 28
2-3-2 Pb6B12O21(OH)6合成條件 30
2-3-3 Ba4B11O18.7(OH)3.6·0.5H2O (A2)合成條件 31
2-3-4 Ba3Ga2[B3O6(OH)]2[B4O7(OH)2] (A3)合成條件 32
2-4 結果與討論 34
2-4-1 Ba6B12O21(OH)6 (A1) 34
2-4-1-1 Ba6B12O21(OH)6 (A1)單晶X光結構解析 34
2-4-1-2 Ba6B12O21(OH)6 (A1)結構描述 37
2-4-1-3 Ba6B12O21(OH)6 (A1)、Pb6B12O21(OH)6粉末X光繞射分 析 41
2-4-1-4 Ba6B12O21(OH)6 (A1)紅外線光譜分析 43
2-4-1-5 Ba6B12O21(OH)6 (A1)粉末二次倍頻量測 44
2-4-2 Ba4B11O18.7(OH)3.6·0.5H2O (A2) 46
2-4-2-1 Ba4B11O18.7(OH)3.6·0.5H2O (A2)單晶X光結構解析 46
2-4-2-2 Ba4B11O18.7(OH)3.6·0.5H2O (A2)結構描述 49
2-4-2-3 Ba4B11O18.7(OH)3.6·0.5H2O (A2)粉末X光繞射分析 51
2-4-2-5 Ba4B11O18.7(OH)3.6·0.5H2O (A2)紅外線光譜分析 53
2-4-3 Ba3Ga2[B3O6(OH)]2[B4O7(OH)2] (A3) 54
2-4-3-1 Ba3Ga2[B3O6(OH)]2[B4O7(OH)2] (A3)單晶X光結構解析 54
2-4-3-2 Ba3Ga2[B3O6(OH)]2[B4O7(OH)2] (A3)結構描述 57
第三章 結論 62
參考文獻 63
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[19] Sheldrick, G. M. SADABS, Version 2008/1, University of Gottingen, Germany, 2008.指導教授 李光華(Kwang-Hwa Lii) 審核日期 2018-7-30 推文 plurk
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