| 对位取代苯磺酸钠在溶液及界面的光反应研究 |
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| 引用本文： | 王素华,陈德文. 对位取代苯磺酸钠在溶液及界面的光反应研究[J]. 物理化学学报, 1996, 12(4): 315-319. DOI: 10.3866/PKU.WHXB19960406 |
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| 作者姓名： | 王素华 陈德文 |
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| 作者单位： | Institute of Chemistry,Academia Sinica,Beijing 100080 |
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| 摘 要： | 用自旋捕捉－ＥＳＲ方法研究了对位取代苯磺酸在水溶液中光化学行为，结果表明ｐＨ的改变及半导体胶体的存在都能影响其光解过程，使产生的中间体发生变化，发生光解过程中产生的中间体之一是硫中心自由基ＳＯ＾－３，在一定的ｐＨ范围还有Ｃ中心自由基和氢自由基生成，在较低ｐＨ范围，初始反应速率与ｐＨ值呈指数关系。
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| 关 键 词： | 自旋捕捉-ESR 磺酸盐 光解 CdS胶体 自由基 |
| 收稿时间： | 1995-07-06 |
| 修稿时间： | 1995-10-06 |
The Study on the Photochemical Degradation of p-Substituted Sodium Phenylsulphonate |
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| Chen Dewen, Wang Suhua. The Study on the Photochemical Degradation of p-Substituted Sodium Phenylsulphonate[J]. Acta Physico-Chimica Sinica, 1996, 12(4): 315-319. DOI: 10.3866/PKU.WHXB19960406 |
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| Authors: | Chen Dewen Wang Suhua |
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| Affiliation: | Institute of Chemistry,Academia Sinica,Beijing 100080 |
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| Abstract: | The photoreaction behaviour of p-substituted sodium phenylsulphonate in aqueous solution and colloidal system has been studied by means of spin trapping-ESR method. The results indicated that the reaction processes and the intermediate free radicals formed were dependent of the pH values as well as the existence of colloid. The sulfur-centered radicals SO , which were the main product were observed, and the carboncentered radicals and hydrogen radicals were also detected in a certain range of pH values.It was discovered that the primary rate of free radical generation changed with the pH values in an exponential form while pH<4. |
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| Keywords: | ESR-spin traping Sodium sulfanilate Photolysis CdS colloid Radical intermediate |
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