Self-cleaning titania films: an overview of direct, lateral and remote photo-oxidation processes

Self-cleaning titania films: an overview of direct, lateral and remote photo-oxidation processes
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DOI:
10.1163/1568567053956644
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发表时间:
2005-01-01
影响因子:
3.3
通讯作者:
Lee, SK
Lee, SK
中科院分区:
化学3区
文献类型:
--
作者:
Mills, A;Hodgen, S;Lee, SK

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综述了含碳材料的直接、侧向和远程氧化的最新研究进展。概述开始于Fujishima和他的同事的开创性工作,涉及通过气相中的二氧化钛的UV照射来远程漂白亚甲基蓝。然后简要讨论了这些工作者对各种聚合物和染料的远程光催化破坏的进一步研究。Paz和他的同事们在横向上的显着工作,但不是远程,氧化十八烷基三氯硅烷(OTS)的photoeteched二氧化钛薄膜,然后检查。本文报道了Choi等人报道的紫外光照射下二氧化钛薄膜对煤烟的横向氧化反应。最后,我们最近的工作的结果煤烟覆盖的二氧化钛薄膜中的直接,横向和远程氧化的煤烟紫外线照射厚的二氧化钛薄膜可以观察到视觉。负责这些光催化氧化过程的最有可能的代理被认为是一个合适的候选人,羟基自由基,建议。
An overview of the recent investigations into the direct, lateral and remote oxidation of carbon-containing materials is given. The overview begins with the pioneering work of Fujishima and his co-workers involving the remote bleaching of methylene blue by UV-irradiation of titania in the gas phase. The further research of these workers conducted on the remote photocatalytic destruction of various polymers and dyes is then discussed briefly. The notable work of Paz and his co-workers on the lateral, but not remote, oxidation of octadecyltrichlorosilane (OTS) by photoeteched titania films is then examined. The striking observations associated with the lateral oxidation of soot by UV-irradiated thin titania films, reported by Choi and his colleagues, are reported. Finally, the results of our most recent work on soot covered titania films in which the direct, lateral and remote oxidation of soot by UV-irradiated thick titania films could be observed visually is discussed. The most likely agent responsible for these photocatalytic oxidation processes is considered and a suitable candidate, hydroxyl radicals, suggested.