Characterization of Surface Acid Sites of Anti-Fouling Surface Preparations using Temperature Programmed Desorption

使用程序升温解吸表征防污表面制剂的表面酸位

• 批准号: 458972-2013
• 负责人: Rowntree, Paul
• 金额: $ 1.82万
• 依托单位: University of Guelph
• 依托单位国家: 加拿大
• 项目类别: Engage Grants Program
• 财政年份: 2013
• 资助国家: 加拿大
• 起止时间: 2013-01-01 至 2014-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=542106
• 关键词: Characterization; Surface; Acid; Sites; Anti

Ultraviolet irradiation is a proven approach to water disinfection that is cost efficient and does not involve the addition of toxic materials to render water potable. Unfortunately the high energy densities near the quartz ultraviolet sources inevitably leads to fouling of the surfaces by inorganic minerals and biomaterials; these reduce the optical and energetic efficiency of the disinfection process, and necessitate mechanical wipers and/or manual cleaning procedures. Trojan UV Technologies has developed and patented surface modifications for these quartz sleeves, and these modifications have demonstrated their effectiveness at inhibiting this fouling. The presence and nature of surface acidic sites is believed to be important to their operation, but the fundamental mechanisms are not clear. It is also not known how to customize the surface treatments to minimize the fouling properties based on the local water properties and compositions.

紫外线照射是一种经过验证的水消毒方法，具有成本效益，并且不涉及添加有毒材料以使水可饮用。 不幸的是，石英紫外源附近的高能量密度不可避免地导致无机矿物和生物材料对表面的污染;这些降低了消毒过程的光学和能量效率，并且需要机械擦拭器和/或手动清洁程序。 Trojan UV Technologies已经为这些石英套管开发了表面改性并获得专利，这些改性已经证明了它们在抑制这种污垢方面的有效性。 表面酸性位点的存在和性质被认为对它们的操作很重要，但基本机制尚不清楚。 也不知道如何定制表面处理以基于局部水性质和组成使污垢性质最小化。