【摘要】：光電材料在空間環(huán)境的作用下會受到空間碎片、等離子體、輻射以及空間污染等環(huán)境效應的影響,本文主要針對空間光電材料污染效應的監(jiān)測進行研究。石英晶體微量天平(QCM)是空間污染監(jiān)測的重要方式,然而,當它探測有機氣體分子時,水分子會對天平的精度造成影響,在QCM表面制備一層納米結(jié)構(gòu)的超疏水薄膜可以降低水分子的影響。但是,當超疏水薄膜長期暴露于有機氣體環(huán)境中,它的超疏水性能就會下降甚至消失,因此,QCM表面吸附的有機污染物的清除是必須要解決的問題。具有光催化性能的材料可有效降解QCM表面的有機污染物,是實現(xiàn)自清潔,保證QCM長期使用的一種有效途徑。基于此,本文采用水熱法及溶膠-凝膠法在QCM表面先后制備了ZnO納米棒陣列超疏水薄膜及TiO_2/ZnO納米復合薄膜,并對其結(jié)構(gòu)、形貌、性能進行了研究。采用水熱法在QCM表面制備了ZnO納米棒陣列膜,該薄膜具有優(yōu)異的超疏水性能及一定的光催化性能。在ZnO納米棒陣列超疏水薄膜的基礎上通過溶膠-凝膠法將納米TiO_2與ZnO復合,不會破壞其超疏水性,還可進一步提高光催化性能。在QCM表面制備的TiO_2/ZnO納米復合薄膜呈現(xiàn)鉛筆狀,且TiO_2的晶型為銳鈦礦型。該復合薄膜具有優(yōu)異的超疏水性能(接觸角可達到155°),表面對水滴有一定的抗粘附性,在探測過程中可以有效地降低水分子的影響,進而提高探測精度。TiO_2/ZnO納米復合薄膜在UV下具有優(yōu)異的光催化性能,可以有效地降解QCM表面吸附的丙酮氣體分子,實現(xiàn)了QCM表面自清潔。此外,該復合薄膜在超疏水性(正常使用時)和超親水性(光催化降解有機污染物時)之間的轉(zhuǎn)換非常穩(wěn)定,滿足長期使用過程中的耐久性。
[Abstract]:Optoelectronic materials will be affected by space debris, plasma, radiation and space pollution under the action of space environment. This paper mainly focuses on the monitoring of the pollution effects of space photovoltaic materials. Quartz crystal microbalance (QCM) is an important way to monitor space pollution. However, when it detects organic gas molecules, water molecules can affect the accuracy of the balance. The effect of water molecules can be reduced by the preparation of a nanostructure superhydrophobic film on the surface of QCM. However, when the superhydrophobic film is exposed to organic gas for a long time, its superhydrophobicity will decrease or even disappear. Therefore, the removal of organic pollutants adsorbed on the surface of QCM is a problem that must be solved. The photocatalytic materials can effectively degrade the organic pollutants on the surface of QCM, which is an effective way to realize self-cleaning and ensure the long-term use of QCM. Based on this, ZnO nanorod array superhydrophobic films and TiO_2/ZnO nanocomposite films were prepared on QCM surface by hydrothermal method and sol-gel method, and their structure, morphology and properties were studied. ZnO nanorod array films were prepared on the surface of QCM by hydrothermal method. The films have excellent superhydrophobic properties and certain photocatalytic properties. On the basis of ZnO nanorod array superhydrophobic thin films, nano-TiO_2 and ZnO were synthesized by sol-gel method, which could not destroy their super hydrophobicity and could further improve their photocatalytic properties. The TiO_2/ZnO nanocomposite films deposited on the surface of QCM show pencil shape, and the crystalline form of TiO_2 is anatase. The composite film has excellent hydrophobicity (contact angle can reach 155 擄), and the surface has some anti-adhesion to water droplets, which can effectively reduce the influence of water molecules in the detection process. The TiO_2/ZnO nanocomposite film has excellent photocatalytic performance under UV, which can effectively degrade the acetone gas molecules adsorbed on the QCM surface and realize self-cleaning on the QCM surface. In addition, the conversion between superhydrophobic (normal) and super hydrophilic (photocatalytic degradation of organic pollutants) is very stable, which satisfies the durability of long-term application.
【學位授予單位】：天津大學
【學位級別】：碩士
【學位授予年份】：2014
【分類號】：TB383.2

【參考文獻】

相關期刊論文 前10條

1 陳俊;王振輝;王瑋;毅男;張旺;尚文;張荻;鄧濤;;超疏水表面材料的制備與應用[J];中國材料進展;2013年07期

2 孫亞賓;付軍;許軍;王玉東;周衛(wèi);張偉;崔杰;李高慶;劉志弘;余永濤;馬英起;封國強;韓建偉;;A single-event transient induced by a pulsed laser in a silicon-germanium heterojunction bipolar transistor[J];Chinese Physics B;2013年05期

3 王曙光;王先榮;王澚;郭興;莊建宏;;航天器表面多層分子污染光學效應分析方法[J];真空與低溫;2013年01期

4 院小雪;易忠;李娜;臧衛(wèi)國;楊東升;;分子吸附器在航天器污染控制中的應用研究[J];航天器環(huán)境工程;2012年06期

5 馬晶;車馳;韓琦琦;周彥平;譚立英;;位移輻射效應對量子阱激光器性能的影響[J];物理學報;2012年21期

6 鄭直;蔣曉東;祖小濤;黃進;王鳳蕊;劉紅婕;周信達;李春宏;魏曉峰;鄭萬國;;重頻脈沖激光輻照光學材料特性的研究進展[J];材料導報;2010年23期

7 李宏偉;黃建國;韓建偉;蔡明輝;李小銀;高著秀;;空間微小碎片撞擊對太陽能電池性能影響[J];航天器環(huán)境工程;2010年03期

8 杜濱陽;范瀟;曹崢;郭小磊;;石英晶體微天平在聚合物薄膜研究中的應用與展望[J];分析化學;2010年05期

9 白羽;龐賀偉;龔自正;童靖宇;;空間微小碎片累積作用下材料光學性能退化預示模型適用性研究[J];航天器環(huán)境工程;2008年04期

10 薛玉雄;曹洲;楊世宇;田愷;;重離子和脈沖激光模擬單粒子翻轉(zhuǎn)閾值等效性研究[J];原子能科學技術(shù);2007年06期

，

本文編號：2384637