研 究 方 法 作 業 報 告 ( 期 中 書 面 報 告 ) 光 電 工 程 研 究 所 題 目 : 探討 TiO2 薄膜在光觸媒的應用 組 別 : 學 第 五 組 生 : M94L0102 謝 侑 融 M94L0207 楊 欽 堯 中文資訊 : 一、博碩士論文: 網址: http://etds.ncl.edu.tw/theabs/index.jsp 進入之後直接使用『進階搜尋』, 搜尋字鍵入『photocatalyst and TiO2』 總共找到 171 筆資料,如下: 其中找到 2 筆比較符合想要的資料 : 第 81 筆 和 第 115 筆 其中第 81 筆,資料如下: 相關內容資料如下 : 此篇中文摘要 : 本研究分成三部分: 第一個部份是利用溶膠-凝膠法與研磨法製備奈米級光觸媒二氧化鈦。實驗結果發現:在溶膠凝 膠法方面以過氧化氫在解膠氫氧化鈦可以得到粒徑小,以及光催化活性好之光觸媒。其最重要的 水浴條件為在 85℃、8.5 小時可以得到平均粒徑 9.8nm 之二氧化鈦。在研磨法方面:磨球的最 佳量為研磨室體積的 70% =>2,520g。漿料之固含量在 30%;並且以二次研磨可以達到完全的 分散。 第二部份是探討奈米二氧化鈦的分散技術與黏著技術。實驗結果發現:在分散方面以聚丙烯酸胺 最佳用量為 1.06wt%之濕式研磨,可以達到最佳的分散。在黏著技術方面以水玻璃在 1﹪時,能 夠與玻片有很好鍵結能力,並且隨著熱處理溫度的增加,硬度會提高。 第三部份著重在光觸媒級二氧化鈦的應用:將奈米級二氧化鈦添加到塑膠、陶瓷釉料以及纺織布 料等不同的領域。探討二氧化鈦的光觸媒效應。實驗結果發現: (a)添加奈米二氧化鈦可以增加塑膠容器除臭的能力,而且可以增 加食物保鮮的期限以避免其發霉。 (b)在陶瓷中以玻璃釉來當成釉料,並添加奈米二氧化鈦可以促進光觸媒效果,其主要是玻璃 釉之燒結溫度是 570℃,因此不會使掺雜之二氧化鈦產生相變化,並且具有較高的光活性以及較 佳之抗菌效果。 (c)在紡織布料中,以溶膠-凝膠法所合成出之奈米二氧化鈦,經過浸漬的方式,再經過 100℃ 熱處理,所分解甲基藍的時間比研磨之二氧化鈦短。且經過溶膠-凝膠法所合成出二氧化鈦具有 很好的黏結性。 關鍵詞 : 奈米、二氧化鈦、塑膠、紡織、陶瓷 第 115 筆資料如下 : 資料內容如下 : 此篇中文摘要 : 本研究是利用反應式磁控濺鍍系統成長二氧化鈦( TiO2 )以及氮摻雜二氧化鈦薄膜 ( TiO2-xNx )。製程的參數有基板偏壓的改變、不同製程溫度、工作壓力、氮氣流量與氧氣流量 的變化,並分析薄膜結構、吸收光譜、組成與表面型態,光觸媒效應則是在可見光源下進行亞甲 基藍分解與銀還原。 分析結果顯示,濺鍍之 TiO2-xNx 薄膜在可見光照射下具有光觸媒的效應。從不施加偏壓到施加 基材偏壓時,因電漿中的離子受基材偏壓吸引而轟擊至薄膜,使得 TiO2 薄膜結構會由銳鈦礦 ( Anatase )變成金紅石( Rutile )再變成非均質結構,較低的工作壓力有較好的銳鈦礦結構生成; TiO2-xNx 薄膜的結構亦會隨著偏壓的增加,由銳鈦礦結構變成金紅石結構, TiO2-xNx 薄膜因 氮氣的通入而容易出現金紅石相。XPS 能譜圖顯示隨著氮氣流量的增加,氮原子逐漸植入 TiO2 薄膜結構中。 UV-visible 分光光譜儀則顯示 TiO2-xNx 薄膜會隨著氮氣流量的增加,其氮含量亦隨著改變,吸 收波長從 400 nm 位移至 510 nm。由掃描式電子顯微鏡( SEM )與原子力探針( AFM )進行表面 型態的分析,隨著氮氣流量的增加 TiO2-xNx 薄膜表面突出小結狀晶粒會變得越來越小;基材偏 壓的增加,離子轟擊的效應增大,薄膜表面會變的比較平滑,而表面粗糙度下降。 有較佳 Anatase 結構的 TiO2-xNx 薄膜有較快的亞甲基藍分解速率以及較多量的銀還原顆粒, XPS 能譜圖中 396 eV 的波峰越強,代表氮含量越多,亞甲基藍分解的速率越大與銀還原的量越 多。薄膜表面的粗糙度與表面結構對銀還原的能力與水接觸角也會有影響,薄膜表面的粗糙度越 大,銀還原的量也就越多,而水接觸角會越小,有親水性的表現。 關鍵詞 : 二氧化鈦、氮參雜、磁控濺鍍、可見光光觸媒 二、學術會議論文 : 網址 : http://www.stic.gov.tw/data_all.htm 進去之後再點選『國內資料庫』 、接下來在點選『學術會議論文摘要』 進去之後、在”不限欄位”那欄輸入關鍵詞『photocatalyst』 、還有在 最下面那欄”會議日期”輸入『2000 年~2005 年』 總共會搜尋到 56 筆資料、其中找到 3 筆較符合相關資料、如下: 第 27 筆資料 : 進去之後資料如下 : 此篇的中文摘要 : 由於受到 SARS 疫情之影響,使得奈米光觸媒在短短幾個月之間,從專業名詞蛻變成流行於消費 大眾之間的時髦名詞。為了釐清奈米二氧化鈦光觸媒之特性、污染物去除與抗菌功能,本文乃從 光觸媒原理與反應機制著手,探討光觸媒在污染物去除與滅菌之效能。實驗結果顯示,二氧化鈦 奈米粒子之粒徑越小,對污染物( NO)去除效率越好。以太陽光為紫外線來源時,光觸媒塗布 產品可將環境大氣中的污染物(NO)從 0.2 ppmv 降低至接近於 0,去除效率接近 100%。滅菌 測試結果則顯示,二氧化鈦光觸媒試片表面對金黃色葡萄球菌與大腸桿菌之 24 小時滅除率,可 達到 99.99%以上,其污染物去除與滅菌效果十分明顯。 關鍵字 : 光觸媒、奈米粒子、二氧化鈦、氮氧化物、抗菌活性、紫外線 第 36 筆資料 : 進去之後資料如下 : 此篇中文摘要 : 本實驗為使用二氧化鈦光觸媒對室內揮發性有機物(VOCs)分解效率之研究,以異丙醇氧化鈦為 起始物,鹽酸及硝酸作為解膠劑,使用溶膠-凝膠法製作光觸媒再經高溫鍛燒而得。所製成的二 氧化鈦晶體以 X-光繞射分析判斷晶形。當鍛燒溫度至 500℃時,除 Anatase phase 出現外,尚有 Rutile phase 的波峰出現,可見此時已有相變化產生。光觸媒對 VOCs 之去除方面,初步結果以 乙醇的分解效果最好,甲苯次之,異丙醇再次之。其中經 500℃鍛燒的二氧化鈦晶體對乙醇濃度 減少的速度最快,其分解速率快慢依序為 500℃、300℃、150℃。以鹽酸作為解離劑較硝酸所製 成的二氧化鈦,在 500℃鍛燒溫度下,對乙醇的分解有高於三倍以上的分解能力。 關鍵字 : 光觸媒、二氧化鈦、揮發性有機物、異丙醇氧化鈦 第 45 筆資料 : 進去之後資料如下 : 此篇中文摘要 : 本研究使用溶膠凝膠法與微結晶粒子懸浮液法二種方法來製備二氧化鈦薄膜。探討不同的水量、 反應溫度等變數對二氧化鈦薄膜的影響。使用溶膠凝膠的方法來製作二氧化鈦薄膜,其溶液的組 成為 Ti(OC/sub 4/H/sub 9/)/sub4/: IPA:HNO/sub 3/:H/sub 2/O:acac=1:70:0.05:5:0.01(molar ratio)在 T=50℃的恆溫振盪反應器中進行製成溶膠的反應,使用 X-Ray(X 光繞射分析)分析溶膠產物, 結果發現鍛燒溫度須高於 300℃,方能形成具有活性的銳鈦礦二氧化鈦,因此基材必須是耐熱的 材料。微結晶粒子懸浮液法是採用低溫製備二氧化鈦微結晶粒子懸浮液,溶液的組成為 Ti(OC/sub 4/H/sub 9/)/sub 4/:IPA:HNO/sub3/:acac:H/sub 2/O=1:10:0.5:0.1:100(molar ratio)反應的溫度為 50 ℃,加熱迴流的溫度設定為 80℃,時間 6 小時,所製得二氧化鈦微粒子約在 3~5nm。本研究將 製備的二氧化鈦懸浮液與商業的 Degussa P-25 二氧化鈦為鍍膜液,於聚乙烯塑膠鍍上二氧化鈦光 觸媒,試驗光催化反應對大腸桿菌殺菌的效果,實驗結果顯示,在照光及二氧化鈦存在的情況之 下,製備的二氧化鈦殺菌的效果在照光 1.5 小時之後,100%的殺菌率,而商業的 Degussa P-25 二氧化鈦在照光 50 分鐘之後,即有 100%的殺菌率。 關鍵字 : 奈米及二氧化鈦、光觸媒、殺菌效果、sol-gel、為結晶粒子懸浮液法 三、期刊雜誌 : 網址 : http://163.26.236.4/ncl-cgi/to_ncl3.exe 點選『工學院』欄、進入之後在檢索值那欄輸入『photocatalyst』 共找到 31 筆資料、找到一筆相關的篇幅 第 22 筆資料如下: 由標題題目進入之後是這篇的一些簡介、如下: 此篇的中文摘要 : 本實驗主要是將純棉織物以奈米級二氧化鈦(TiO2)為催化劑,並以不同多元羧酸溶液為交鏈 劑經二浸二壓及預乾後,用紫外光進行光傷化以製作無甲醛防縐加工物。所使用的多元羧酸交鏈 劑包括:琥珀酸,檸檬酸,馬來酸酐,1,2,3,4-丁烷四羧酸。本研究探討不同交鏈劑及改變交鏈 劑濃度、催化劑濃度和紫外光照射時間對棉織物防縐性和物性的影響。由結果顯示棉織物之乾縐 摺回復角、濕縐摺回復角及接枝率隨交鏈劑濃度、催化劑濃度以及光照時間之增加而增加,而傷 化劑濃度超過 0.8%或光照時間大於 30 分鐘後有下降的趨勢;但是強力、白度、柔軟度則相反。 其中 1,2,3,4-丁烷四羧酸交鏈劑加工織物有較佳之防縐緎和柔軟度,同時具有良好的接枝率、接 枝效率的白度等性質。與傳統樹脂加工物相比,雖防縐性不如傳統樹脂加工物,但強力、白度、 柔軟度皆較傳統樹脂加工物佳,尤其在強力方面更甚。 關鍵字 : 奈米及 TIO、光觸媒、光催化、photocatalyst 英文資訊 : 一、Ei(Engineering Village 2) 網址 : http://www.engineeringvillage2.org/controller/servlet/Controller?EISESSION=1_ffd1351074a9a305dM3ba5 ses1&CID=quickSearch&database=1 進入之後、在搜尋欄那欄鍵入關鍵詞『photocatalyst and TiO2』、還有 日期欄填入『2000 年~2005 年』如下 : 搜尋之後、共找到 49 篇文章、其中 2 筆較符合相關的資料 第 15 筆資料 : 點選『Detailed Record』、就可以看到完整資訊如下 : 此篇的英文摘要 : Mixed phase nanocrystalline TiO2 powders (anatase-rutile) (Degussa P25) were prepared by hydrothermal modification. The preparation procedure took place at 200 °C for 1-10 days in an autoclave system with water as the solvent. Thus, different degrees of modification were achieved. TiO 2 water modified nanocrystalline thin films were immobilized on glass substrates by applying a doctor-blade's deposition technique. A variety of spectroscopic [UV-vis reflectance, infra-red (IR), Raman, structural X-ray diffraction (XRD), N2 absorption (BET)] and microscopic [atomic force microscopy (AFM), scanning electron microscopy (SEM)] techniques were applied to characterize the modified films. A model textile industry pollutant (methyl orange) was used in order to evaluate the photocatalytic efficiency of the modified material. Our results show that the photocatalytic activity of the modified films is improved by a factor of 2 when we extend the hydrothermal treatment up from 1 to about 4 days in the autoclave system. Scratch tests revealed favorable interconnection of the titania nanoparticles as well as significantly higher adhesion to the glass substrate for the modified films, in comparison to the original P25 material. © 2005 Elsevier B.V. All rights reserved. Keyword : photocatalyst、Titanium oxide 第 27 筆資料如下 : 點選『Detailed Record』就可以看到簡介如下 : 此篇的英文摘要 : Improvement on the photocatalyst has been prepared by plasma surface treatment to the TiO2 thin film of anatase crystal structure. The TiO2 thin film surface formed by RF reactive ion plating was bombarded by the plasma which consists of Ar, H2 and CH4. The following parameters changed by conducting the plasma surface treatment to TiO2 thin film: chemical bonding state and optical characteristic, especially, the absorption edge of a TiO2 thin film after the plasma surface treatment shifted to visible light region. It was possible to maintain the anatase crystal structure suitable for the photocatalyst by adjusting the gas pressure of plasma surface treatment. Therefore, it was proven that it would be able to absorb the visible ray and maintain the crystal structure of anatase. Keyword : Tiatnium Dioxide、surface treatment、Plasma applications、Photocatalyst 二、SCI(Science Citation Index) : 首先先進入成大圖書館、點選『資料庫檢索』如下 : 進入之後再點選『西文資料庫』如下 : 進入之後就是”各學科的資料庫”、然後點選『理工學科資料庫』如 下 : 進入之後畫面顯示如下 : 選擇”SCI(SCIENCE CITATION INDEX web abstract)”、此欄裡的『簡 介』就可以看到以下畫面、點選下方的『如何查詢 SCI 收錄期刊排名』 進入之後面如下 : 之後再點選第一大點『SCI 資料庫利用建議方式』的第一小點那一 欄、進入畫面如下 : (網址 : http://wos.isiknowledge.com/CIW.cgi?SID=B6GbfgJ92GeFHBKILiJ) 亦或者另外一個搜尋的網址 如下 : http://portal.isiknowledge.com/portal.cgi 在上方可以輸入關鍵詞『photocatalyst』 、然而在下方有年份可以選 擇、點選『From 2000~2005 年』此欄、可以找到 1570 筆的資料 找到其中約有 6 筆較符合相關的資料 : 2000 年一篇、2001 年一篇、 2002 年一篇、2003 年一篇、2004 年一篇、2005 年二篇 此篇是 2000 年(第 1532 筆資料) : Title: Transparent anatase nanocomposite films by the sol-gel process at low temperatures Author(s): Matsuda A, Kotani Y, Kogure T, Tatsumisago M, Minami T Source: JOURNAL OF THE AMERICAN CERAMIC SOCIETY 83 (1): 229-231 JAN 2000 Document Type: Article Language: English Cited References: 22 Times Cited: 39 Abstract: We have successfully prepared transparent anatase nanocomposite films on various types of substrates, including organic polymers, using the sol-gel method at temperatures <100 degrees C under ambient pressure. This novel process is based on the findings that (i) anatase nanocrystals are uniquely formed in sol-gel-derived SiO2-TiO2 films that have been subjected to a hot-water treatment, and (ii) the addition of an organic polymer such as poly(ethylene glycol) in the films accelerates the formation of anatase nanocrystals. The film coating on the substrates is a promising candidate for use as a photocatalyst to decompose environmental pollutants and harmful microorganisms. KeyWords :PHOTOCATALYTIC;DECOMPOSITION;STRUCTURAL-CHANG ES; HIGH HUMIDITY; PARTICLES; COATINGS; ENVIRONMENT; ACID Addresses: Matsuda A (reprint author), Univ Osaka Prefecture, Grad Sch Engn, Dept Appl Mat Sci, Osaka, 5998531 Japan Univ Osaka Prefecture, Grad Sch Engn, Dept Appl Mat Sci, Osaka, 5998531 Japan Subject Category: MATERIALS SCIENCE, CERAMICS 此篇 2001 年如下(第 1294 筆資料) : Title: Morphology of a TiO2 photocatalyst (Degussa, P-25) consisting of anatase and rutile crystalline phases Author(s): Ohno T, Sarukawa K, Tokieda K, Matsumura M Source: JOURNAL OF CATALYSIS 203 (1): 82-86 OCT 1 2001 Document Type: Article Language: English Cited References: 26 Times Cited: 32 Abstract: The TiO2 powder (Degussa, P-25), which is a standard material in the field of photocatalytic reactions, contains anatase and rutile phases in a ratio of about 3 : 1. Transmission electron microscopy showed that the anatase and rutile particles separately form their agglomerates. The average sizes of the anatase and rutile elementary particles are 85 and 25 mn, respectively. Diffuse reflectance spectra of the TiO2 powder were successfully traced by physically mixing pure anatase and rutile particles in a ratio of 3: 1. By the BF treatment of the TiO2 powder, pure rutile particles were isolated. All these results indicate that the rutile phase does not exist as an overlayer on the surface of anatase particles, but it exists separately from anatase particles. We also found that photocatalytic oxidation of naphthalene is inefficient on pure anatase and rutile powders. However, the reaction is very efficient on the P-25 powder, as well as on a mixture of pure anatase and rutile particles. Under the conditions of the photocatalytic reactions, the anatase and rutile agglomerates are considered to be decomposed, and the anatase and rutile particles are in contact, leading to a synergy effect. (C) 2001 Academic Press. Author Keywords: photocatalyst; titanium dioxide; anatase; rutile; morphology; TEM KeyWords Plus: TITANIUM-DIOXIDE; WATER; DECOMPOSITION; NAPHTHALENE; OXYGEN; DIHYDROXYLATION; OXIDATION; HYDROGEN; GLASS Addresses: Matsumura M (reprint author), Osaka Univ, Res Ctr Solar Energy Chem, 1-3 Machikaneyama, Toyonaka, Osaka 5608531 Japan Osaka Univ, Res Ctr Solar Energy Chem, Toyonaka, Osaka 5608531 Japan Subject Category: CHEMISTRY, PHYSICAL; ENGINEERING, CHEMICAL IDS Number: 481DJ 此篇是 2002 年(第 1151 筆資料) : Title: Mg-doped WO3 as a novel photocatalyst for visible light-induced water splitting Author(s): Hwang DW, Kim J, Park TJ, Lee JS Source: CATALYSIS LETTERS 80 (1-2): 53-57 2002 Document Type: Article Language: English Cited References: 11 Times Cited: 9 Abstract: Mg-doped WO3 with band gap energy of about 2.6 eV is a viable photocatalyst for visible light-induced water splitting in the presence of hole scavengers. The conduction band edge position of p-type Mg-doped WO3 was -2.7 V versus SCE at pH 12. By doping Mg on WO3 the conduction and valence band positions were shifted by 2.25 V negatively, leading to a conduction band edge position which was negative enough for H+ ions to be reduced thermodynamically, with little change in band gap energy. The negative shift in band position might be ascribed to lowering of the effective electron affinity of WO3 by doping Mg with a very low electron affinity. Author Keywords: Mg-doped WO3; photocatalyst; visible light; water splitting; band position shift Addresses: Lee JS (reprint author), Pohang Univ Sci & Technol, Dept Chem Engn, San 31 Hyoja Dong, Pohang, 790784 South Korea Pohang Univ Sci & Technol, Dept Chem Engn, Pohang, 790784 South Korea Pohang Univ Sci & Technol, Sch Engn Sci & Engn, Pohang, 790784 South Korea Korea Inst Sci & Technol, Clean Technol Res Ctr, Seoul, 136791 South Korea Subject Category: CHEMISTRY, PHYSICAL 此篇是 2003 年(第 791 筆資料) : Title: Thin film TiO2 photocatalyst deposited by reactive magnetron sputtering Author(s): Yamagishi M, Kuriki S, Song PK, Shigesato Y Source: THIN SOLID FILMS 442 (1-2): 227-231 OCT 1 2003 Document Type: Article Language: English Cited References: 15 Times Cited: 5 Abstract: TiO2 films were deposited by r.f. reactive magnetron sputtering on non-alkali glass at 200 degreesC under total gas pressure of 0.3, 1.0 and 3.0 Pa with oxygen flow ratio [O-2/(O-2 + Ar)] of 30%. All films showed polycrystalline anatase structure, in which a small portion of rutile phase was observed only for the films deposited at 0.3 Pa. The films deposited at total gas pressure (P-tot) of 3.0 Pa performed photoinduced hydrophilicity and high photocatalytic activities, i.e. photoinduced decomposition of acetaldehyde (CH3CHO) gas and adsorbed Methylene Blue on the film surface. The photocatalytic activity of the films showed the clear tendency to decrease with the decrease in p(tot) during the deposition. Such degradation of the photocatalytic activity was considered to be correlated with the transport processes of the high-energy particles in the sputter deposition processes. In the case of the lower p(tot) of 0.3 or 1.0 Pa, the films showed poor photocatalytic activities because of the defect level generations caused by the bombardment of the high-energy particles on the growing film surface. Such defect levels should be the recombination centers of the electron-hole pairs induced by the UV illumination and decrease their lifetime. (C) 2003 Published by Elsevier B.V. Author Keywords: photocatalyst; reactive sputtering; TiO2; smart windows KeyWords Plus: GLASS Addresses: Shigesato Y (reprint author), Aoyama Gakuin Univ, Coll Sci & Engn, Setagaya Ku, Tokyo, Japan Aoyama Gakuin Univ, Coll Sci & Engn, Setagaya Ku, Tokyo, Japan Sony Corp, Core Technol Dev Ctr, Yokohama, Kanagawa Japan Subject Category: MATERIALS SCIENCE, MULTIDISCIPLINARY; PHYSICS, APPLIED; PHYSICS, CONDENSED MATTER 此篇是 2004 年(第 443 筆資料) Title: Microstructure and bactericidal ability of photocatalytic TiO2 thin films prepared by rf helicon magnetron sputtering Author(s): Lei M, Tanemura S, Kondo Y, Iwata M, Toh S, Kaneko K Source: APPLIED SURFACE SCIENCE 238 (1-4): 125-131 NOV 15 2004 Document Type: Article Language: English Cited References: 11 Times Cited: 0 Abstract: The present study investigates the microstructure and bactericidal ability of polycrystalline and epitaxial TiO2 thin films with anatase and rutile structure. Phase formation and the distortion of the lattice of the film compared with bulk are proved by TEM observation. HRTEM images assure the good crystal quality and compact structure of the films prepared by rf helicon magnetron sputtering. This obtained larger band gap due to the lattice deformation could contribute to the better photocatalytic effect of the anatase film. Bactericidal abilities evaluated by the photokilling E. Coli using film stick method under UV irradiation show the following result: Both single and polycrystal anatase films exhibit obvious bactericidal abilities while no distinguishing difference for them. On the other hand, no bactericidal ability is observed for rutile films in this work. The band gap value of rutile film is lower than the energy potential required to O-2/O-2(-) reductions according to the principle proposed by Fujishima et al. This resulted in the observed poor photocatalyst effect of rutile film. (C) 2004 Elsevier B.V. All rights reserved. Author Keywords: TiO2 thin film; bactericidal abilities; TEM analysis; helicon sputtering; optical band gap Addresses: Lei M (reprint author), Nagoya Inst Technol, Grad Sch Engn, Dept Environm Technol & Urban Planning, Showa Ku, Gokisho Cho, Nagoya, Aichi 4668555 Japan Nagoya Inst Technol, Grad Sch Engn, Dept Environm Technol & Urban Planning, Showa Ku, Nagoya, Aichi 4668555 Japan Noritake Ltd Co, Nishi Ku, Nagoya, Aichi 4518501 Japan Kyushu Univ, HVEM Lab, Dept Mat Sci & Engn, Higashi Ku, Fukuoka, 8128581 Japan E-mail Addresses: lmiao@system.nitech.ac.jp Subject Category: CHEMISTRY, PHYSICAL; MATERIALS SCIENCE, COATINGS & FILMS; PHYSICS, APPLIED; PHYSICS, CONDENSED MATTER 此篇是 2005 年(第 1 筆) Title: Synthesis of TiO2 photocatalyst and study on their improvement technology of photocatalytic activity Author(s): Jung CK, Bae IS, Song YH, Kim TK, Vlcek J, Musil J, Boo JH Source: SURFACE & COATINGS TECHNOLOGY 200 (1-4): 534-538 OCT 1 2005 Document Type: Article Language: English Cited References: 12 Times Cited: 0 Abstract: Thin films of titanium dioxie (TiO2) were deposited on glass using a single molecular precursor such as titanium (IV) iso-propoxide (Ti[OCH(CH3)(2)](4), 97%) by sol-gel processing. In order to elevate photocatalytic activity of the as-grown TiO2 films, oxygen plasma ignited by radio-frequency (RF) under vacuum condition was also used in the range of 50 similar to 200 W within 0.5 It at room temperature. During toluene and phenol removal test, photocatalytic activity was evaluated by the measurements of the UV/vis. irradiation, infrared spectroscopy, XPS, and contact angle analysis. In this work, the effect of the plasma on the improvement of hydrophilic property of photocatalyst has mainly been investigated. A superhydrophilic property and smooth surface morphology appeared in the UV light irradiation with O-2 plasma treatment. Based on this work, we confirmed that the oxygen RF plasma treatment method was very reliable method for the synthesis of TiO2 photocatalyst with high catalytic performance and long durability. (c) 2005 Published by Elsevier B.V. Author Keywords: tiO(2) films; dip-coating; RF plasma surface treatment; photocatalytic activity; oxygen gas KeyWords Plus: OXIDATION Addresses: Jung CK (reprint author), Sungkyunkwan Univ, Dept Chem, Suwon, 440746 South Korea Sungkyunkwan Univ, Dept Chem, Suwon, 440746 South Korea Sungkyunkwan Univ, Ctr Adv Plasma Surface Technol, Suwon, 440746 South Korea Univ W Bohemia, Dept Phys, Plzen, 30614 Czech Republic E-mail Addresses: ckjung7818@skku.edu Subject Category: MATERIALS SCIENCE, COATINGS & FILMS 此篇是 2005 年(第 12 筆資料) Title: Photocatalytic degradation of acetone by Ni-doped titania thin films prepared by dc reactive sputtering Author(s): Visinescu CM, Sanjines R, Levy F, Parvulescu VI Source: APPLIED CATALYSIS B-ENVIRONMENTAL 60 (3-4): 155-162 OCT 3 2005 Document Type: Article Language: English Cited References: 53 Times Cited: 0 Abstract: Two series of titania-based photocatalysts were prepared by the sputtering method, in Ar/H2O atmosphere, utilizing a Ti target modified with 1-6 Ni inserts. The first catalysts series (samples 1-5) was deposited under the total pressure of 6 x 10(-3) mbar (16% water vapor), while for the second series (catalysts 6-9) the total pressure was 3 x 10(-3) mbar (33% H2O). XRD data showed that Ni could accommodate to the titania matrix only within certain concentration limits. Ni presence in the catalysts composition does not influence significantly the morphology or the electric properties of the films, but exhibits a strong influence over the photocatalytic properties. The highest conversion in the photocatalytic decomposition of acetone was obtained in the first catalysts series for sample 2 (0.41 Ni at.%, conversion rate 47%), while in the second series, the most active catalyst was sample 7 (0.13 Ni at.%, conversion rate 25%). Reusing sample 3 for several runs leaded to an improvement in its catalytic behavior. The photocatalytic activity was found to be strongly influenced by the amount of Ni and the deposition conditions. (c) 2005 Elsevier B.V. All rights reserved. Author Keywords: titania photocatalyst; acetone photodecomposition; nickel ions doping; XRD; AFM; DR-UV-vis KeyWords Plus: TIO2; OXIDATION; WATER; DIOXIDE; ETHANOL; PHENOL; ACETALDEHYDE; CATALYSTS; OXIDE; SOL Addresses: Parvulescu VI (reprint author), Univ Bucharest, Fac Chem, Dept Chem Technol & Catalysis, Bdul Regina Elisabeta 4-12, Bucharest, 030016 Romania Univ Bucharest, Fac Chem, Dept Chem Technol & Catalysis, Bucharest, 030016 Romania IPMC, LPCM, Ecole Polytech Lausanne, Lausanne, CH-1015 Switzerland E-mail Addresses: v_parvulescu@yahoo.com Subject Category: CHEMISTRY, PHYSICAL; ENGINEERING, ENVIRONMENTAL 三、期刊雜誌 : 網址 : http://163.26.236.4/ncl-cgi/hypage.exe 總共有 20 筆資料、找到其中一筆相關的資料 : 第 17 筆資料如下 : 英文摘要 : This research mainly treats cotton fabric with solution, which is composed of nanoparticles of TiO2 photocatalyst and different polycarboxylic acids, and prepared by two dips-two-nips, pre-drying and photocatlyzed by UV irradiation to produce non-formaldehyde crease resistant fabric. We have compared several kinds polycarboxylic acids, including succinic acid (SUA), citric acid (CA), maleic anhydride (MA) and 1,2,3,4-butene tetracarboxylic acid (BTCA) for crosslinking agents. The influence of the acid concentration, catalyst additive leve and UV irradiation time on crease-resist and physical properties were investigated. The experimental results indicate that for both dry and wet wrinkle recovery angle, graft ratio increases with crosslinking agent concentration, catalyst additive level and UV irradiation time. However, it showd a decreasing trend when the catalyst addition was over 0.8% or irradiated under UV light over 30 minutes. But the strength, softness and the whiteness of the treated cotton fabric showed reversed results. Among these ploycarboxylic acids, 1,2,3,4-butene tetracarboxylic acid performed best for both dry and wet wrinkle recovery angles, in terms of softness, graft ratio and whiteness compared with a traditional dimethylol-dihydroxyethylene urea (DMDHEU) finish, it has better strength, whiteness, and softness, although it doesn't have as a good crease resistance as the traditional ones. 四、SDOS : 網址 : http://sdos.ejournal.ascc.net/ 首先使用”進階搜尋” 進入之後、輸入關鍵詞『photocatalyst and TiO2』總共搜尋到 2 筆資 料文獻 : 這 2 筆文獻如下 : (但因為並不符合相關資料、所以改用簡易搜尋) 用簡易搜尋重新搜尋、輸入關鍵詞『photocayalyst』: 總共找到 1099 筆的資料文獻、先選擇第一頁編號第 100 筆的資料、 點選『Bibligraphic』 : 內容介紹以及英文摘要如下 : Title: The design and development of highly reactive titanium oxide photocatalysts operating under visible light irradiation Authors: Anpo, Masakazua; Takeuchi, Masatoa Affiliations: a. Department of Applied Chemistry, Graduate School of Engineering, Osaka Prefecture University, 1-1, Gakuen-cho, Sakai, Osaka 599-8531, Japan Abstract This review deals with the preparation of highly reactive titanium oxide (English): photocatalysts and the clarification of the active sites as well as the detection of the reaction intermediates at the molecular level. Furthermore, we discuss the advancement of photofunctional systems and processes that can utilize visible and/or solar light. The photocatalytic reactivity of semiconducting TiO2 powder was found to be dramatically enhanced by the loading of small amounts of Pt, which work to enhance the charge separation of the electrons and holes generated by light irradiation. Highly dispersed titanium oxide species prepared within zeolite frameworks or silica matrices showed unique photocatalytic performance much higher than that of conventional semiconducting TiO 2 photocatalysts. The potential for the effective utilization and conversion of solar energy makes research into the modification of the electronic properties of TiO2 photocatalysts by such methods as advanced metal ion implantation to produce photocatalysts which are able to absorb and operate efficiently even under visible light irradiation one of the most important fields in photocatalysis research. This modification process can be applied not only to semiconducting TiO2 photocatalysts but also to TiO2 thin film photocatalysts, as well as titanium oxide photocatalysts highly dispersed within zeolite frameworks. Significantly, a new alternative method for directly preparing such visible-light-responsive TiO2 thin film photocatalysts has been successfully developed by applying a RF magnetron sputtering deposition method. Publisher: Elsevier Science 選擇第二筆資料(第一頁編號第 76 筆資料) : 內容介紹以及英文摘要如下 : Title: Photocatalytic water splitting into H2 and/or O2 under UV and visible light irradiation with a semiconductor photocatalyst Authors: Zou, Zhiganga; Ye, Jinhuab; Arakawa, Hironoria Affiliations: a. Photoreaction Control Research Center (PCRC), National Institute of Advanced Industrial Science and Technology (AIST), 1-1 Higashi, Tsukuba, Ibaraki 305-8563, Japan b. Materials Engineering Laboratory (MEL), National Institute for Materials Science (NIMS), 1-2-1 Sengen, Tsukuba, Ibaraki 305-0047, Japan Abstract We report three new series of solid photocatalysts with different crystal (English): structure: Bi2MNbO7 (M=Al3+,Ga3+ and In3+); A2B2O7 pyrochlore-type with cubic system and space group Fd3m; InMO4(M=Nb5+,Ta5+): ABO4 wolframite-type with monoclinic system and space group P2/a and BiMO4(M=Nb5+,Ta5+): ABO4 stibotantalite-type with triclinic system and space group P1(M=Ta) and orthorhombic systems with space group Pnna (M=Nb), respectively. Although the photocatalysts crystallize in the different crystal structure, they contain the same octahedral TaO6 and/or NbO6 in the different photocatalysts. The band structure of the photocatalysts is defined by Ta/Nbd-level and O 2p-level. The band gaps of the photocatalysts were estimated to be between 2.7 and 2.4eV. Under visible light (λ>420nm) or ultra-violet irradiation, these photocatalysts were found to split water into H2 and/or O2. The photocatalytic activity increases significantly by loading co-catalysts on the surface of the photocatalyst, such as NiO and Pt. Publisher: Elsevier Science 五、EI 與 SCI 之比較 : 在 Ei 資料庫裡介面是比較好懂的、可以直接用搜尋的方式就可以很 快的找到我們想要的資料、但是有個缺點是:找到的資料內容是沒有 SCI 那麼樣的詳細、而且內容多以摘要的為主、有全文的電子檔很 少、所以往往就算找到自己想要的資料、卻不能看完整的是有點可惜 說、而在 SCI 資料庫裡的資料文獻是比較豐富點、但是在南台的 SCI 卻是舊的、年份是滿舊且也只有幾年而已(2001-2002 年)、所以想要 比較近幾年的資料、就必須跑去成大找、然而在 SCI 的資料庫介面 是比較繁瑣一點的、剛開始要找滿久的、不過找到的資料是比較多且 詳細、內容也有比較多全文的、所以對我們是比較有利的、相較於 2 者之間、SCI 的內容如:作者、出處、以及信箱位址等等的一些基本 資料是比 EI 還要來的仔細點、所以要查詢其他相關的文獻是會來的 比較容易、所以個人是覺得 SCI 是會比較好的在資料方面上。 六、搜尋心得 : 對於研究生來講、基本的搜尋資料方法是ㄧ定要會的、要不然就找不 到論文資料可以看、那麼對於實驗可能就沒有多大幫助了、然而對於 不同的資料庫所能搜尋到的資料也當然都會不一樣、有些資料庫其所 收錄的論文集會比較多、有些可能就沒那麼多了、還有有些資料庫找 到的資料也是都比較沒有全文的、都也只有摘要而已、例如:EI 等等、 然而對於有些學校所沒有提供的論文資料、我們也必須要跑到成大去 找、所以這些都是要比較花點時間的、還有像是一些搜尋的技巧或者 是其他的方法、也是都要自己慢慢摸索才所以知道的、所以經過這幾 次的作業還有一些學長所教的方法、使我對於搜尋資料有ㄧ定的了 解、也獲得不少有用的資訊、那麼對我以後實驗上或者相關知識上都 會有ㄧ定的幫助。