碩士 / 國立成功大學 / 化學工程學系 / 102 / In order to develop an excellent and stable photocatalyst for water splitting under visible-light irradiation, we modified the NaTaO3 by using hydrogenation. However, NaTaO3 was difficult to introduce sufficient disorder lattices by hydrogenation because of its closed-packed perovskite structure.
In the present work, we improved the hydrogenation effect of NaTaO3 by using a simple method, which decreased the ratio of Na to Ta as synthesizing NaTaO3 photocatalyst. According to the XRD and Raman spectrum results, this process couldn't destroy NaTaO3 perovskite structure. NaTaO3 which contented lower sodium would form sodium vacancy and provide extra space for introducing disorder lattices during hydrogenation. On the basis of water splitting result, hydrogenated NaTaO3 shows a outstanding photocatalytic activity and stability. Followed by decreasing the ratio of Na to Ta, the hydrogen evolution ability could get much higher.
| Identifer | oai:union.ndltd.org:TW/102NCKU5063069 |
| Date | January 2014 |
| Creators | YiSiWu, 吳翊熙 |
| Contributors | Hsi-Sheng Teng, 鄧熙聖 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 91 |
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