| Interposition fixing structure of TiO2 film deposited on activated carbon fibers |
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| 引用本文： | 傅平丰 栾勇 戴学刚. Interposition fixing structure of TiO2 film deposited on activated carbon fibers[J]. 中国有色金属学会会刊, 2006, 16(4): 965-969. DOI: 10.1016/S1003-6326(06)60361-0 |
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| 作者姓名： | 傅平丰 栾勇 戴学刚 |
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| 作者单位： | Research Institute of Indoor Environment Beijing Union University Beijing 100083 China，Institute of Process Engineering Chinese A cademy of Sciences Beijing 100080 China，Institute of Process Engineering Chinese A cademy of Sciences Beijing 100080 China |
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| 摘 要： | 1 Introduction Immobilization of TiO2 film on a substrate is necessary for its applications as TiO2 suspensions have fatal limitations in difficult separation and filtration for its reuse[1]. Thus, the fixing stability of TiO2 film with its substrate is …
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| 关 键 词： | TiO2薄膜 活性碳纤维 插入固定结构 稳定性 |
| 收稿时间： | 2006-02-16 |
| 修稿时间： | 2006-05-29 |
Interposition fixing structure of TiO2 film deposited on activated carbon fibers |
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| FU Ping-feng,LUAN Yong,DAI Xue-gang. Interposition fixing structure of TiO2 film deposited on activated carbon fibers[J]. Transactions of Nonferrous Metals Society of China, 2006, 16(4): 965-969. DOI: 10.1016/S1003-6326(06)60361-0 |
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| Authors: | FU Ping-feng LUAN Yong DAI Xue-gang |
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| Affiliation: | 1. State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Chaoyang District, Beijing 100029, China;2. Department of Chemistry, South Dakota School of Mines and Technology, Rapid City, SD 57701, USA |
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| Abstract: | The immobilized photocatalyst, TiO2 film supported on activated carbon fibers (TiO2/ACFs) prepared with molecular adsorption-deposition (MAD), exhibits high stability in cyclic photodegradation runs. The interposition fixing structure between TiO2 film and carbon fiber was investigated by means of SEM-EDX, XRD, XPS and FTIR, and a model was proposed to explain this structure. With SEM examination of carbon fiber surface after removing the deposited TiO2 film, a residual TiO2 super-thin film was found to exist still. By determining surface groups on ACFs, titanium sulfate (Ti2(SO4)3) in burnt remainders of the TiO2/ACFs was thought to be formed with an interfacial reaction between TiO2 film and carbon fibers. These provide some evidence of firm attachment of TiO2 film to carbon fiber surface. In the consideration of characteristics of the MAD, the deposition mechanism of TiO2 film on ACFs was proposed, and the interposition fixing structure was inferred to intercrossedly form between TiO2 film and ACFs' surface. This structure leaded to firm attachment and high stability of the TiO2 film. |
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| Keywords: | TiO2 film activated carbon fibers interposition fixing structure stability |
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