【正文】 WO3 薄膜的光催化性能研究摘要薄膜材料是相對于半導(dǎo)體材料而言的，是人們采用特殊的方法，在半導(dǎo)體材料的表面沉積或制備的一層性質(zhì)與半導(dǎo)體材料完全不同的物質(zhì)層。薄膜材料因具有光學(xué)性質(zhì)、電學(xué)性質(zhì)、磁學(xué)性質(zhì)、化學(xué)性質(zhì)、力學(xué)性質(zhì)、熱學(xué) 性質(zhì)等多種特性在許多領(lǐng)域得到應(yīng)用，如電學(xué)薄膜、光學(xué)薄膜、硬質(zhì)膜、耐蝕膜、潤滑膜、裝飾膜、包裝膜等。光催化劑在光照的條件下能夠產(chǎn)生強氧化性的自由基，該自由基能徹底降解幾乎所有的有機物，并最終生成 H2O、CO 2 等無機小分子，加上光催化反應(yīng)還具有反應(yīng)條件溫和，反應(yīng)設(shè)備簡單，二次污染小，操作易于控制，催化材料易得，運行成本低，可望用太陽光為反應(yīng)光源等優(yōu)點。研究表明 WO3 光催化穩(wěn)定性良好，對光催化降解水中污染物也有較理想的催化效果,而且我國鎢蘊藏豐富,居世界第一，WO 3 有廣泛來源。本實驗采用鎢粉過氧化聚鎢酸法制備基礎(chǔ)溶膠，在溶膠中采取添加與無添加草酸對比研究其效果，找出影響 WO3 薄膜光催化性能的主要因素，研究其對 WO3 薄膜的成膜性、表面形貌、光催化性能的影響。研究發(fā)現(xiàn)在溶膠中添加草酸后 WO3 薄膜的光催化性能更佳，降解率也有所提高。采用光催化實驗分別研究優(yōu)化的浸漬提拉工藝，脈沖電泳沉積工藝及直流電沉積工藝參數(shù)對 WO3 薄膜光催化性能的影響，找出影響薄膜性能的主要因素，分別對比分析直流電沉積工藝，浸漬提拉工藝及脈沖電泳沉積工藝，研究這三種成膜方式對 WO3 薄膜光催化性能的影響。研究證明在三種工藝添加草酸后制備的 WO3 薄膜光催化性能更佳，降解率也比起無添加草酸有提高，最終得到三種工藝當(dāng)中不管是添加或無添加草酸，直流電沉積工藝制備的 WO3 薄膜的光催化性能最佳，羅丹明 B 的降解率也達到了最高。關(guān)鍵詞：WO 3薄膜，光催化，浸漬提拉工藝，脈沖電泳沉積工藝，直流電沉積工藝，過氧化聚鎢酸WO3 thin film photocatalytic propertiesAbstract People with a special method in semiconductor material surface preparation a layer of film materials，it is pletely different physicality to semiconductor material. Film materials because of its optical properties, electrical properties, magic properties, chemical and mechanical properties, thermal properties, such as various characteristics in many areas to be applications such as electrical film, optical thin film, hard film, corrosion resistant film, lubricant, decorative membrane, packaging film, etc.Light under the condition of catalysts in the illumination can produce strong oxidizing free radicals, this free radicals can thoroughly degraded almost all of the anic matter, and ultimately generate H2O, CO2 and other inanic of small molecules, plus photocatalytic reaction also has mild reaction condition, reaction, the equipment is simple, secondary pollution small, operation easy control, catalytic materials, low cost and easy operation with the sun light is for reaction etc. Research shows that WO3 photocatalytic good stability, light catalytic degradation water pollutants have ideal catalytic effect, and China39。s tungsten rich, ranking the first, have extensive WO3 source.This experiment used tungsten powder together peroxide based sol prepared tungsten acid legal system adopted in sol, add and nonincrease oxalic acid contrast research its effect, affecting the WO3 film light catalytic properties, study the main factors of the WO3 film into the membranous, surface morphology, photocatalytic performance influence. The study found that the added after oxalate solgel thin WO3 photocatalytic degradation rate performance is better, has also improved. Research by photocatalytic experiments were optimized macerate tiras craft, pulse electrophoresis deposition process and dc WO3 thin film deposition process parameters on the effect of light catalytic properties, find out the main factors of influence film properties respectively, sedimentary processes, parison and analysis of the dc tilak process and pulse electrophoresis impregnation sedimentary processes, research the three film of photocatalytic WO3 film way properties. Research proof in three process after the WO3 add oxalate preparation of film photocatalytic degradation rate, performance is better than nonincrease oxalic acid have also increased, eventually get three process add or nonincrease among both sedimentary fabrication processes of oxalic acid, dc WO3 film the best performance of the photocatalytic degradation rates, LuoDanMing B also reached the highest.Keywords: WO3Film, Photocatalytic, Dipcoating technique, pulsed electrophoretic deposition process, DC current process, peroxide Decatungstate目 錄摘要 ..................................................................................................................................................IAbstract ...........................................................................................................................................II第 1 章 緒論 ...................................................................................................................................1 引言 .......................................................................................................................................1 光催化劑及分類 ...................................................................................................................2 常見光催化劑 ................................................................................................................2 納米光催化劑 ................................................................................................................3 光催化機理 ...........................................................................................................................3 光催化技術(shù)的應(yīng)用 ...............................................................................................................4 廢水處理 ........................................................................................................................4 空氣凈化 ........................................................................................................................4 超親水性 ........................................................................................................................4 氧化鎢 ...................................................................................................................................5 WO3 的晶格特征 .............................................................................................................5 WO3 薄膜的物理化學(xué)性質(zhì) .............................................................................................6 WO3 薄膜的制備方法 ...........................................................................................................6 電化學(xué)沉積法 ................................................................................................................6 溶膠凝膠法 ...................................................................................................................7 濺射法 ......