Photoelectrocatalytic properties of titanium dioxide/silver nanowire hybrid films
| Autor: | HSU, YUNG-HSIANG, 徐詠祥 |
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| Rok vydání: | 2019 |
| Druh dokumentu: | 學位論文 ; thesis |
| Popis: | 107 With respect to photocatalysis, titanium dioxide plays an important role in the degradation of pollution. Some studies also used electrocatalytic techniques to remove pollutants. Since both photocatalysis and elelctrocatalysis can remove efficiently pollutants, the study aims to combine them on removal of pollutants. In this work, we prepared silver nanowires by the polyol synthesis method and used such silver nanowires to prepare transparent conductive films. A titanium oxide layer was deposited on the transparent conductive films of silver nanowires to form bi-layer TiO2/AgNW films. For photoelectrocatalytic experiments, we used methylene blue as a pollutant and applied a bias voltage between the TiO2/AgNW film and a counter electrode. The effect of thickness of the TiO2 layer, silver nanowires, and forward/reverse bias on photoelectrocatalysis was investigated. The hydroxyl free radicals were analyzed through reaction of terephthalic acid and measurement of fluorescence. Experimental results revealed that the TiO2/AgNW film working as an anode showed significant catalytic activity on the degradation of methylene blue under a 0.5 V bias. |
| Databáze: | Networked Digital Library of Theses & Dissertations |
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