Silver Chloride Films for Photocatalytic Degradation of Orange II Dye

• Main Authors: Chang-Ching You, 游長慶
• Other Authors: Ching-Bin Lin
• Format: Others
• Language: zh-TW
• Published: 2010
• Online Access: http://ndltd.ncl.edu.tw/handle/45637572338756370484

碩士 === 淡江大學 === 機械與機電工程學系碩士班 === 98 === This study has proposed a novel method to fabricate silver chloride film. The silver chloride film was obtained by precipitating reaction that infusing sodium chloride aqueous solution on the silver nitrate aqueous solution which was phase changed into solid-state. The morphology of under-surface of the silver chloride film has many stick structures with high absorption area which heaps by a lot of small particles. The under-surface of the film was used to do photocatalytic degradation of orange II azo dye under ultraviolet light and visible light separately, and the degradation effect of the silver chloride film was compared with the film which was obtained with 8.4M, 6.3M, 4.2M, and 2.1M silver nitrate aqueous solution and the nano titanium dioxide powder which have same specific surface area. In ultraviolet light photocatalysis, the Orange II azo dye could be degraded by the silver chloride film effectively. Its color could be removed 98% during 2 hours. And in visible light photocatalysis, the silver chloride film with silver clusters degrades orange II azo dye effectively but not significantly when compared to ultraviolet photocatalytic. And the color could be removed 31% during 2 hours. Among them, the silver chloride obtained from 4.2M silver chloride aqueous solution due to the higher absorption area, so the photocatalytic degradation is better than other concentration. Under the same absorption area, the photocatalytic degradation effect of the silver chloride film was larger than that of nano titanium dioxide powder.