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[Nature Materials] 自然-材料銳鈦礦,金紅石型TiO2最新價(jià)帶研究進(jìn)展 已有9人參與
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Title:Band alignment of rutile and anatase TiO2 Abstract: The most widely used oxide for photocatalytic applications owing to its low cost and high activity is TiO2. The discovery of the photolysis of water on the surface of TiO2 in 1972 launched four decades of intensive research into the underlying chemical and physical processes involved. Despite much collected evidence, a thoroughly convincing explanation of why mixed-phase samples of anatase and rutile outperform the individual polymorphs has remained elusive. One long-standing controversy is the energetic alignment of the band edges of the rutile and anatase polymorphs of TiO2 (ref. ). We demonstrate, through a combination of state-of-the-art materials simulation techniques and X-ray photoemission experiments, that a type-II, staggered, band alignment of ~ 0.4 eV exists between anatase and rutile with anatase possessing the higher electron affinity, or work function. Our results help to explain the robust separation of photoexcited charge carriers between the two phases and highlight a route to improved photocatalysts. 全文下載鏈接:[ 來自小組 木蟲催化 ] |
文獻(xiàn) | TiO2 |

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送紅花一朵 | zan |
木蟲 (正式寫手)

木蟲 (著名寫手)
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木蟲 (著名寫手)
金蟲 (正式寫手)
木蟲 (初入文壇)

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