- 學位論文
銅/二氧化鈦奈米複材與薄膜之製備及功能性質研究
A Study on the Preparation and Functions of the Cu-Loaded Titanium Dioxide Nano-composites and Films
摘要
摘 要 論文名稱：銅/二氧化鈦奈米複材與薄膜之製備及功能性質研究 頁數：118 校所別：國立臺北科技大學 有機高分子研究所 學位：碩士 研究生：林雨蓉 指導教授：鄭國彬 共同指導教授：鄭大偉、鄧道興 關鍵詞：銅/二氧化鈦、光催化、亞甲基藍、聚氨酯薄膜、負離子 本研究先是以初濕含浸法將銅負載於奈米二氧化鈦表面，以製備銅/二氧化鈦奈米複合式光觸媒粉體。利用銅金屬本身捕獲二氧化鈦光生電子的能力及其變價特性，有效減少電子電洞再結合的機率，因此經過金屬改質的二氧化鈦光觸媒具有更佳的光催化效果，藉由SEM/EDX、TEM與XRD等儀器鑑定此光觸媒之基本特性，並將其應用於分解亞甲基藍溶液以探討其光催化分解性能。經由SEM/EDX量測證明銅確實有負載於TiO2上，TEM顯示以初濕含浸法所製備的顆粒粒徑約40 ± 20 nm，XRD量測發現在750℃高溫鍛燒後可得到完整的Rutile晶相，光催化結果顯示修飾過的銅/二氧化鈦光觸媒之光降解效果以添加量為2.12%者為適量點（Optimum）。 第二階段研究則以水性聚氨酯為基材，經由高分子混摻法，以銅/二氧化鈦作為激發材料，添加到不同含量之作為功能材的負離子功能性粉體中，運用濕式PU塗佈法將激發材/功能材粉體塗佈製無機粉體/有機高分子之水性聚氨酯複合薄膜，並探討改變銅/二氧化鈦激發材及功能材粉體含量對複合薄膜之靜態負離子釋放個數與遠紅外線溫差之影響。靜態負離子隨著激發材與功能材粉體含量的添加，其負離子釋放個數有明顯的增長趨勢。且遠紅外線溫差效果隨著激發材添加量之增加而有漸增之趨勢。本實驗所製備之二氧化鈦光觸媒可期應用於淨化空氣方面，以分解低分子量之有機氣體，製成之二氧化鈦薄膜更可應用於淨水處理並且易於回收再使用。
並列摘要
ABSTRACT Title：The Study on the Preparation and Functions of the Cu-Loaded Titanium Dioxide Nano-composites Films School: National Taipei University of Technology Page:118 Department: Institute of Organic and Polymeric Material Degree: Master Researcher: Yu-Jung Lin Advisor: K. B. Cheng Co-Advisor: T. W. Cheng, T. H. Tang Keywords: Cu/TiO2, Photocatalysis, Methylene Blue, Polyurethane Films, Negative Ion In this study, we first load on titanium dioxide surface with copper by used- Incipient Wetness Impregnation process, in order to prepare the Cu/TiO2 photocatalyst nano-composites. The copper metal powders were used to self-ability to catch the light-generated charge carriers of titanium dioxide and valence variation, to reduce the combine probability of the electron and electric hole (recombination) effectively, so that the modified Titanium dioxide photocatalyst have the better photocatalysis effect. Use SEM/EDX, TEM and XRD instrument to determine the basic characteristic of the photocatalyst, and apply the photocatalyst to decompose methyl blue solution to discuss with its performance and functions. SEM/EDX indicated Cu was load on TiO2, TEM showed catalyst particles size via incipient wetness impregnation process were about 20~60nm, In XRD analysis, it was found that had whole Rutile phase TiO2 after 750℃ calcinations. The photoreduction exhibit that 2.12% Cu/TiO2 content modified photocatalyst has the better performance. The polymer blend method was used in this second study gradation, the water-borne polyurethane is used as the matrix, the Cu/TiO2 powders were used as an exciting material with the different quantity then added into different quantity of negative ion powder which is the functional materials respectively. Exciting/function powders were added into polyurethane viscose solution and stirring evenly with the Kurabo-Mazerustar planetary mixer, so as to the excited/functional powders could distribute in polyurethane viscose solution evenly. Such solutions were coated into form the PU/Cu/TiO2/NI film with a coating rod and cured it, to fabricate the PU/excited/functional composite films. Furthermore, the effects of the excited and functional powders content on the temperature difference functions and negative ion release amount of PU composite films were also investigated. We expected that the TiO2 photocatalyst could be used in air purification to decompose low-molecular weight organic gases. Besides, the TiO2 photocatalyst composite films could be applied to water treatment and easy to recycle.