臺灣博碩士論文加值系統

本研究中的活性碳材料，主要以最新一代的活性碳纖維布為基材，採用銓能碳素公司生產的活性碳纖維布為原料，接著以1 M及5 M硝酸溶液對活性碳纖維布進行表面處理，處理時間分別為0.5 hr、1.5 hr、2.5 hr，處理完後再置於低真空環境下含浸硝酸銀溶液2小時，利用氧化還原及離子交換的原理，使銀離子均勻的鍵結在纖維表面，乾燥後放入高溫爐於惰性氣體保護下進行熱處理，將共價銀結晶還原成奈米銀顆粒，而得到分佈均勻的奈米銀活性碳纖維。
經場發射電子顯微鏡(FE-SEM)可以觀察到1 M、5 M硝酸改質後的活性碳纖維布，經真空含浸硝酸銀溶液及熱處理完後，可以觀察到活性碳纖維布上有分佈均勻、粒徑大小介於10~30 nm的奈米銀顆粒，發現以硝酸進行表面處理的時間越久，活性碳纖維表面越平滑，導致奈米銀容易在高溫處理時熱團聚，造成粒徑50 nm以上的大顆粒奈米銀粒子產生。
從BET比表面積測試儀的數據顯示活性碳纖維布，經表面處理及載銀熱處理完後所測得的t-polt micropore area值降低為原始活性碳纖維布的55.8% (1MEA-Ag)、64.0% (5MEA-Ag)，主要原因為奈米銀團簇卡在狹縫型微孔的開口導致。本文內容因涉及商業問題，詳細內容已經過刪減處理。

This study uses the newest activated carbon material, activated carbon fiber fabric (ACFF) No. FAW1001 & FAW1502 made by Challenge Carbon Company, to support nano-Ag particles. We treated ACFF for 0.5 hr, 1.5 hr, and 2.5 hr with 1 M and 5 M nitrate acid at 80 ℃, then immersed it for 1 hr in 0.001 M nitrate silver solution in a vacuum, utilizing the principle to ion change or to oxidize/reduce. We made silver ion uniform bending on ACFF and dry at 120 ℃ for 24 hr, then heat- treated at 400 ℃ in a furnace. The silver ion bond was transition to covalent bond after high temperature strain, so we obtained ACFF support nano-Ag particles well mixed.
With use of FE-SEM one can observe nano-Ag particles well mixed on ACFF after high temperature treatment, particle size averaging 10~30nm. Two we can find
that treated ACFF’s time increase with 1 M and 5 M nitrate acid at 80 ℃. The ACFF’s surface become smooth. It cause nano-Ag particles to heat aggregate become big particles. Big particle size averaging 50~60nm.
The measurement of high resolution surface area and porosimetry analyzer (BET), found the depositing nano-Ag particles on ACFF’s t-polt micropore area value was 55.8%(1MEA-Ag) and 64.0%(5MEA-Ag) of ACFF’s t-polt micropore area value.The main reason was nano-Ag particles clogged the ACFF’s micropore due to the value decrease.This thesis involves the commercial problem, the detailed content has already been deleted.

中文摘要 I
英文摘要 II
總目錄 III
圖目錄 IV
表目錄 VI
第一章 前言 1
1.1活性碳材料的歷史 3
1.2各種活性碳材料的比較 3
1.3各類型活性碳的應用 6
第二章 研究目的與主題 7
第三章 文獻回顧 8
3.1活性碳纖維的發展 8
3.2活性碳纖維的製程 8
3.2.1 原料 8
3.2.2 穩定化步驟 9
3.2.3碳化步驟 9
3.2.4活化步驟 10
3.2.4.1 物理活化 10
3.2.4.2 化學活化 11
3.3 活性碳纖維的物理和化學特性 11
3.3.1物理特性 11
3.3.1.1 孔洞尺寸量測 11
3.3.1.2吸附理論 12
3.3.1.3 物理吸附與化學吸附 13
3.3.2化學特性 15
3.3.2.1官能基 15
3.3.3影響吸附性能的因素 16
3.3.4 吸附平衡 17
3.3.4.1 Langmuir等溫吸附 17
3.3.4.2 BET等溫吸附 18
3.3.4.3 Isotherm等溫吸附 19
3.3.4.4 吸附機構 22
3.4奈米材料技術發展 23
3.4.1奈米材料 23
3.4.2 奈米顆粒製備方法 24
3.4.3 奈米材料的特性 26
3.4.3.1表面效應(Surface effect) 26
3.4.3.2 小尺寸效應(Small size effect) 27
3.4.3.3 量子尺寸效應(quantum size effect) 27
3.4.4 奈米粒子的團聚與分散 28
3.4.4.1 奈米粒子的團聚與分散 28
3.4.4.2 保護基分散 29
3.5 活性碳纖維載銀技術 30
3.5.1 活性碳載貴金屬歷史 30
3.5.2 活性碳仔貴金屬應用 30
3.6活性碳鍍銀技術文獻回顧 34
3.6.1活性碳纖維布載銀製程技術回顧 34
3.6.2 活性碳纖維布載銀機制 36
3.6.2.1 活性碳對Ag+的吸附機理 37
3.6.2.2 離子交換吸附 38
3.6.2.3氧化還原吸附 38
3.6.2.4界面化學 41
3.6.3 凝集現象 42
3.6.4高溫熱處理 43
3.7活性碳纖維載銀之應用探討 44
3.7.1載銀活性碳纖維之殺菌作用與機制 44
3.8相關使用儀器原理 46
3.8.1 ESCA原理 46
第四章 實驗方法 48
4.1 實驗流程 48
4.2 樣品編號 49
4.3活性碳纖維載奈米銀實驗 50
4.3.1實驗材料 50
4.3.2活性碳纖維布硝酸改質 50
4.3.3真空含浸 50
4.3.4 高溫熱處理 50
4.4分析儀器 50
4.4.1孔洞分析實驗 50
4.4.2 真密度測試 51
4.4.3冷場發射掃描式電子顯微鏡及能量散佈光譜儀(FE-SEM) 51
4.4.4多功能表面化學電子能譜儀 (μ-ESCA/XPS) 51
第五章 結果與討論 52
5.1 FESEM 52
5.1.1 硝酸改質 52
5.1.2 真空含浸製程 54
5.1.3 熱處理 55
5.2.1 比表面積分析(BET) 65
5.2.1.1 硝酸改質活性碳纖維布與比表面積的關係 65
5.2.1.2 熱處理完之載銀活性碳纖維布與比表面積的關係 65
5.3多功能表面化學能譜儀(ESCA) 69
5.4. XRD微結構分析 77
第六章 結果與討論 78
第七章 參考文獻 79
第八章 作者簡介與致謝 83

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