| 段文杰,赵亮,黄做华,田振邦,黄伟庆,王俊.化学通报,2017,80(2):202-207. |
| 巯基乙胺改性腈纶纤维的制备及其对银离子的吸附性能研究 |
| Preparation of Cysteamine Modified Polyacrylonitrile fiber and Its Performance for Adsorption of Ag |
| 投稿时间：2016-06-28 修订日期：2016-10-08 |
| DOI： |
| 中文关键词: 巯基乙胺，腈纶，Ag ，吸附 |
| 英文关键词:Cysteamine, PAN, Ag , Adsorption |
| 基金项目:河南省重点科技攻关项目（142102310071）和河南省科技开放合作项目（162106000023） |
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| 中文摘要: |
| 对腈纶纤维（PAN）进行接枝改性，制备了一种新型巯基纤维材料（cPAN）。用红外光谱对cPAN纤维进行了结构表征，并测定了其巯基含量为5.08 mmol/g。考察了25℃温度下cPAN纤维对Ag 的吸附和再生性能，结果表明，cPAN纤维吸附Ag 的最佳初始pH范围为5~7，其最大吸附容量为500.0 mg/g；当Ag 的初始浓度为100 mg/L时，30 min即可达到吸附平衡；5％硫脲-1.0 mol/L HCl溶液对Ag 的脱附率可达90%以上，经再生后的纤维可循环使用。 |
| 英文摘要: |
| A novel fiber material (cPAN) was prepared by the modification of polyacrylonitrile (PAN) fiber. Its structure was characterized by FT-IR spectra, and its thiol content was determined to be 5.08 mmol/g. The Ag adsorption and regeneration performance of cPAN was examined at 25℃. The results showed that the optimum initial pH range for adsorption is 5~7, the maximum adsorption capacity is 500 mg/g, It can reach adsorption equilibrium within 30 min when the initial Ag concentration is 100 mg/L. More than 90% of the Ag could be eluted from cPAN fiber by the mixed solution of 5% thiourea and 1.0 mol/L hydrochloric acid, and the recycled fiber could be used repeatedly. |
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