Photocatalytic degradation of 4-nitrophenol in aqueous suspension by using polycrystalline TiO2 impregnated with functionalized Cu(II)-porphyrin or Cu(II)-phthalocyanine
Photocatalytic degradation of 4-nitrophenol in aqueous suspension by using polycrystalline TiO2 impregnated with functionalized Cu(II)-porphyrin or Cu(II)-phthalocyanine
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DOI：
10.1016/s0021-9517(03)00040-x
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发表时间：
2003-07-25
影响因子：
7.3
通讯作者：
Schiavello, M
中科院分区：
文献类型：
--
作者：
Mele, G;Del Sole, R;Schiavello, M
多晶二氧化钛样品浸渍功能化铜（II）-或无金属卟啉的光催化活性进行了研究。探针反应，即，4-硝基苯酚（4-NP）在水悬浮液中的光降解，已被使用。结果表明，敏化剂的存在下是有益的光活性，并建议Cu（II）的重要作用。浸渍与改性Cu（II）-和无金属酞菁类似的样品的比较表明，卟啉的存在下是更有益的4-硝基苯酚的分解率和不可清除的有机碳（NPOC）的消失。实验进行了通过使用截止和干涉滤光片和合作机制，涉及两个TiO 2和敏化剂的光活化提出。(C)2003 Elsevier Science（美国）。All rights reserved.
The photocatalytic activity of polycrystalline TiO2 samples impregnated with functionalized Cu(II)- or metal-free porphyrins has been investigated. A probe reaction, i.e., 4-nitrophenol (4-NP) photodegradation in aqueous suspension, has been used. The results indicated that the presence of the sensitizers is beneficial for the photoactivity and suggest an important role of Cu(II). A comparison with similar samples impregnated with modified Cu(II)- and metal-free phthalocyanines showed that the presence of porphyrin is more beneficial both for the decomposition rate of 4-nitrophenol and for the disappearance of nonpurgeable organic carbon (NPOC). Experiments were carried out by using cutoff and interference filters and a cooperative mechanism involving the photoactivation of both TiO2 and sensitizer is proposed. (C) 2003 Elsevier Science (USA). All rights reserved.