【正文】 實驗采用微弧氧化技術(shù)制備了 鈦網(wǎng)電極， 以亞甲基藍(lán) 為待解降液 ，考察了微弧氧化制備條件如電解質(zhì)種類、電解質(zhì)濃度、微弧時間對亞甲基藍(lán)的光催化和光電催化的脫色情況。結(jié)果表明， 6 g/l 的 Na3PO4和 5 min 的微弧時間是制備 鈦網(wǎng) 的最佳條件。當(dāng) Cu2+的濃度為 mol/l，微弧氧化時間 7 min 時，光催化和光電催化對亞甲基藍(lán)的脫色率分別達(dá)到 %和 %。 根據(jù)單因素優(yōu)化的步驟，最終確定了在 5 mg/l 的亞甲基藍(lán)， mol/l 的硫酸鈉溶液， cm 的電解間距， V 的外加電壓以及 pH 為 5 的情況下，光電催化對亞甲基藍(lán)的脫色率達(dá)到 %。 關(guān)鍵詞 ：微弧氧化；銅摻雜 ； 鈦網(wǎng)電極； 甲醛 沈陽理工大學(xué)學(xué)士學(xué)位論文 II Abstract Titanium mesh electrode supported on titanium substrates were prepared by microarc oxidation. Experiment adopted methylene blue as the test material. Photocatalytic and photoelectrocatalytic decoloring rate of methylene blue were carried out with an aim to inspect the influence of preparation conditions of TiO2 such as electrolyte, electrolyte concentration, and microarc time. The results showed that 6 g/L of Na3PO4 and 5min microarc time is the best condition for the preparation of TiO2 thin films . The method of microarc oxidation load Cu2+ was determined to modify titanium mesh electrode When the concentration of Cu2 + was mol / L and microarc oxidation time was 7 min , the photocatalytic and photoelectric catalytic decoloration rate of methylene blue can reach % and % ,respectively. Some relevant factors influencing photoelectric catalytic decoloration rate of methylene blue were investigated. After single factor optimization, we drew a conclusion that the degradation of methylene blue rate reached % under the circumstances of 5 mg/l methylene blue and mol/l sodium sulfate solution, cm electrolytic spacing, V applied voltage ,pH of 5. Finally formaldehyde was studied, the photocatalytic degradation attained % and photoeletrocatalytic degradation reached % in 2 h. Kewords: microarc oxidation。 titanium mesh electrode 。 沈陽理工大學(xué)學(xué)士學(xué)位論文 III 目 錄 摘 要 .......................................................................................................................................... I Abstract...................................................................................................................................... II 目 錄 ......................................................................................................................................III 1 緒論 ..................................................................................................................................... 1 引言 ........................................................................................................................... 1 光催化技術(shù) ............................................................................................................... 2 TiO2光催化 劑的性質(zhì) ..................................................................................... 2 TiO2降解甲醛的機理 ..................................................................................... 3 影響光催化活性的因素 ................................................................................. 4 微弧氧化技術(shù) ........................................................................................................... 5 微弧氧化技術(shù)的發(fā)展史 ................................................................................. 5 微弧氧化的特點和機 理 ................................................................................. 6 微弧氧化的影響因素 ..................................................................................... 8 TiO2光催化薄膜的改進(jìn)技術(shù) ................................................................................... 9 研究意義與內(nèi)容 ..................................................................................................... 10 研究目的與意義 ........................................................................................... 10 研究內(nèi)容 ....................................................................................................... 10 2 實驗部分 ........................................................................................................................... 11 實驗原料、試劑和儀器 ......................................................................................... 11 實驗原料：鈦網(wǎng)、石墨、蛭石 ................................................................... 11 實驗儀器 ....................................................................................................... 11 實驗儀器 ....................................................................................................... 11 實驗材料預(yù)處理 ..................................................................................................... 12 實驗方法與步驟 ..................................................................................................... 13 3 實驗結(jié)果與討論 ............................................................................................................... 15 亞甲基藍(lán)最大波長的確定與標(biāo)準(zhǔn)曲線的繪制 ..................................................... 15 亞甲基藍(lán)最大波長的確定 ........................................................................... 15 亞甲基藍(lán)標(biāo)準(zhǔn)曲線的繪制 ........................................................................... 16 Cu2+摻雜鈦網(wǎng)電極光催化性能的研究 .................................................................. 16 微弧氧化電解質(zhì)種類對光催化的影響 ....................................................... 17 微弧氧化法電解質(zhì)濃度對光催化的影響 ................................................... 18 微弧氧化時間對光催化的影響 ................................................................... 19 不同種類 Cu2+修飾法對光催化的影響 ....................................................... 20 微弧負(fù)載不同 Cu2+濃度對光催化的影響 ................................................... 21 不同微弧時間負(fù)載 Cu2+對光催化的影響 ................................................... 22 Cu2+摻雜鈦網(wǎng)電極光電催化性能的研究 .............................................................. 23 微弧氧化電解液種類對光電催化的影響 ................................................... 23 微弧氧化法電解質(zhì)濃度對光電催化的影響 ............................................... 24 沈陽理工大學(xué)學(xué)士學(xué)位論文