Highly bioactive silver and silver/titania composite films grown by chemical vapour deposition
Highly bioactive silver and silver/titania composite films grown by chemical vapour deposition
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DOI：
10.1016/j.jphotochem.2006.09.014
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发表时间：
2007-03-05
影响因子：
4.3
通讯作者：
Yates, H. M.
中科院分区：
文献类型：
--
作者：
Brook, L. A.;Evans, P.;Yates, H. M.
本文描述了如何通过新型火焰辅助 CVD 工艺沉积纳米结构银，对通过热 CVD 生长的光催化活性 TiO2 薄膜进行功能和结构改性。由此产生的复合薄膜显示出高度耐用、高光催化活性，并且还具有很强的抗菌行为。所描述的方法产生的沉积控制提供了控制薄膜纳米结构的潜力，这对于确定组合薄膜结构的光活性和生物活性以及复合薄膜的透明度至关重要。此外，我们表明所得薄膜还表现出“自我再生”能力，因为它们既能杀死薄膜表面上存在的细菌，又能光降解薄膜。残留物。这种双重作用显着减少了由于污染物堆积而导致的表面失活问题。当与 CVD 沉积薄膜众所周知的耐用性相结合时，这些特性尤其重要，为在寻求生物活性表面功能的领域中增强应用提供了新的机会。 (c) 2006 Elsevier B.V. 保留所有权利。
This paper describes how photocatalytically active films of TiO2, grown by thermal CVD, may be functionally and structurally modified by deposition of nano-structured silver via a novel flame assisted CVD process. The resulting composite films are shown to be highly durable, highly photocatalytically active and are also shown to possess strong antibacterial behaviour.The deposition control, arising from the described approach, offers the potential to control the film nanostructure, which is proposed to be crucial in determining the photo and bio-activity of the combined film structure, and the transparency of the composite films.Furthermore, we show that the resultant films also exhibit "self-regeneration" capability, in that they both kill bacteria present on the film surface and then photo-degrade the residues. Such a dual action significantly reducing the problems of surface deactivation due to build up of contamination.These properties are especially significant when combined with the well-known durability of CVD deposited thin films, offering new opportunities for enhanced application in areas where bioactive surface functionality is sought. (c) 2006 Elsevier B.V. All rights reserved.