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| SORPTION OF PHENOL AND P-NITROPHENOL ONTO A WEAKLY ANION EXCHANGER： XPS ANALYSIS AND MECHANISM | |
| 基金项目： | 中国科学院资助项目;江苏省自然科学基金 |
| 摘 要： | |
| 关 键 词： | 苯酚 XPS分析 阴离子交换 吸附机理 |
SORPTION OF PHENOL AND P-NITROPHENOL ONTO A WEAKLY ANION EXCHANGER: XPS ANALYSIS AND MECHANISM |
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| Authors: | LI Xiaotao Pan Bingcai Pan Bingjun Zhang Weimin Meng Fanwei Chen Jinlong Zhang Quanxing |
| Institution: | 1. State Key Laboratory of Pollution Control and Resources Reuse,School of the Environment, Nanjing University, Nanjing 210093, China;Department of Science and Technology, State Environmental Protection Agency, Beijing 100035, China 2. State Key Laboratory of Pollution Control and Resources Reuse,School of the Environment, Nanjing University, Nanjing 210093, China |
| Abstract: | X-ray photoelectron spectroscopy (XPS ) was adopted to elucidate sorption mechanism of phenol and p-nitrophenol onto a weakly anion exchanger D301. The distribution of specific forms of tertiary amino group on D301 was obtained and effect of free tertiary amino group on phenol sorption onto D301 was discussed. The result indicated that the percent of the protonated tertiary amine group on polymeric matrix was much lower than the reference compound N,N-dimethylbenzylamine at an identical pH value in solution due to the much lower activity degree of hydrogen ion in inner resin phase than in the external solution. Less free amino group on D301 results in less sorption capacity of phenol and p-nitrophenol in an acidic solution. Under the experimental conditions both phenol sorption onto D301 can be explained as solid extraction and the distribution coefficient varies linearly with the content of free amino group on D301. |
| Keywords: | XPS Anion exchanger Phenolic compounds Sorption mechanism |
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