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| 化学表面处理竹炭对水中Au(III)的吸附性能研究 |
| Studies on the Adsorption Performance of Bamboo-charcoal after Chemical Surface Treatment for Au(III) in Aqueous Solution |
| 投稿时间：2012-08-05 |
| DOI： |
| 中文关键词: 物理化学 竹炭 化学表面处理 Au(III) 吸附条件 吸附性能 |
| 英文关键词: physical chemistry bamboo-charcoal chemical surface treatment Au(III) adsorption conditions adsorption performance |
| 基金项目:浙江省科技厅项目(2010C31G2260008)、丽水学院重点科研项目(KZ201108)资助。 |
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| 中文摘要: |
| 对普通竹炭进行了表面化学处理，并研究了此竹炭对Au(III)的吸附性能。实验结果表明:改性后竹炭对Au(III)的吸附性能有明显的提高，且吸附过程从以物理吸附为主转化为以化学吸附为主。如果条件控制得当，吸附率可达97%以上，说明处理后的竹炭可以有效回收水相中的Au(III)。红外图谱和元素分析对改性前后的竹炭表征的结果表明:含氧基团和含氮基团的含量有明显的增加，且含氧基与含氮基与Au(III)配位成键。 |
| 英文摘要: |
| Surface of ordinary bamboo-charcoal was pretreated with chemical methods, and the adsorption performance of the bamboo-charcoal for Au(III) was investigated. Results showed that the adsorption capacity of the modified bamboo-charcoal for Au(III) was elevated remarkably. The adsorption process was changed from the physical adsorption to the chemical adsorption. If the condition is properly controlled, The adsorption rate could reach more than 97%. Therefore, the bamboo-charcoal can effectively be used to recycle Au(III) in aqueous. Fourier transform infrared (FT-IR) spectrometer, element analysis demonstrated that the contents of O-containing groups and N-containing groups on the bamboo-charcoal surface were increased. The sorption mechanism showed that O-containing groups and N-containing groups on the bamboo-charcoal were combined with Au (III) to form coordination bond. |
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