| Mineralization of 4-Chlorophenol under Visible Light Irradiation in the Presence of Aluminum and Zinc Phthalocyaninesulfonates |
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| 作者姓名： | 许宜铭 胡美琴 陈祖栩 曾冬云 |
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| 作者单位： | [1]DetmrtmentofChemistry,ZhejiangUniversity,Hangzhou,Zhejiang310027,China [2]DepartmentofBiologicalTechnology,ZhejiangUniversity,Hangzhou,Zhejiang310027,China |
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| 基金项目： | theNationalNaturalScienceFoundationofChina (No .2 997790 19)，theNaturalScienceFoundationofZhejiangProvince (No .2 990 3 3 ) |
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| 摘 要： | Photosensitized oxidation of 4-chlorophenol (4CP) by the title complexes (AIPcS and ZnPcS) in aerated aqueous solution uponvisible light irradiation(λ=450nm) has been investigated using methanol as a disassociating reagent.It is confirmed that the monomeric species of the sesitizer is more active than the corresponding dimer in singlet oxygen generation for 4CP oxidation.However,the monomer is also the main component found in the sensitlzer‘s photobleaching, In this reload, AIPcS is much more stable than ZnPcS, and the Dhotoble~hlno is observed to proceed via singlet and triplet oxygen, respectlvely.The final products of 4CP oxidation in alkaline solution are carbon dioxide and chloride ions.while at pH=7 and pH=3 the p-benzoquinone is the product.The temperature is found to have influence on both the photosensitized degradation of methyl orange and ZnPcS photobleaching,with an activation energy of 15.8 and 24.2kJ/mol,respectively.
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| 关 键 词： | 矿化作用 4-氯酚 可见光分光光度法 酞菁磺酸铝 酞菁磺酸锌 氧化作用 光敏作用 光致漂白 光敏剂 AIPcS ZnPcS |
Mineralization of 4-Chlorophenol under Visible Light Irradiation in the Presence of Aluminum and Zinc Phthalocyaninesulfonates |
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| Xü Yi‐Ming,Hu Mei‐Qin,Chen Zu‐Xu,Zeng Dong‐Yun.Mineralization of 4-Chlorophenol under Visible Light Irradiation in the Presence of Aluminum and Zinc Phthalocyaninesulfonates[J].Chinese Journal of Chemistry,2003,21(8):1092-1097. |
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| Authors: | Xü Yi‐Ming Hu Mei‐Qin Chen Zu‐Xu Zeng Dong‐Yun |
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| Abstract: | Photosensitized oxidation of 4‐chlorophenol (4CP) by the title complexes (AlPcS and ZnPcS) in aerated aqueous solution upon visible light irradiation (δ ≥ 450 nm) has been investigated using methanol as a disassociating reagent. It is confirmed that the monomeric species of the sensitizer is more active than the corresponding dimer in singlet oxygen generation for 4CP oxidation. However, the monomer is also the main component found in the sensitizer's photobleaching. In this regard, AlPcS is much more stable than ZnPcS, and the photobleaching is observed to proceed via singlet and triplet oxygen, respectively. The final products of 4CP oxidation in alkaline solution are carbon dioxide and chloride ions, while at pH = 7 and pH = 3 the p‐benzoquinone is the product. The temperature is found to have influence on both the photosensitized degradation of methyl orange and ZnPcS photobleaching, with an activation energy of 15.8 and 24.2 kJ/mol, respectively. |
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| Keywords: | chlorophenol aluminum phthalocyaninesulfonate zinc phthalocyaninesulfonate oxidation aggregation photosensitization photobleaching |
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