| ZIF衍生多孔碳纳米纤维用于高效电容去离子的研究 |
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| 引用本文： | 高利军,白思林,梁苏岑,穆野,董强,胡超.ZIF衍生多孔碳纳米纤维用于高效电容去离子的研究[J].化工学报,2020,71(6):2760-2767. |
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| 作者姓名： | 高利军 白思林 梁苏岑 穆野 董强 胡超 |
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| 作者单位： | 西安交通大学化学工程与技术学院，陕西 西安 710049 |
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| 基金项目： | 陕西省自然科学基金项目;国家自然科学基金项目;中央高校基本科研业务专项资金 |
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| 摘 要： | 作为一种环保节能的新兴脱盐技术，电容去离子技术正在成为替代反渗透脱盐和电渗析脱盐的一项重要的脱盐技术。各种碳基材料被广泛地应用于电容去离子电极材料的研究，然而大多数碳基材料为粉末状材料，需要添加黏结剂，这必将导致电极材料电吸附能力的下降。利用静电纺丝技术，将ZIF纳米颗粒和聚丙烯腈混纺，并通过分段高温热处理过程，成功合成了具有柔性结构的整体性多孔碳纳米纤维。由于其具有孔道结构的分级分布和较强的亲水性等优良特性，所制得的多孔碳纳米纤维在1.2 V电压下于500 mg/L NaCl溶液中表现出良好的电吸附性能，脱盐量达到了19.92 mg/g，比普通碳纳米纤维提高了一倍以上。
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| 关 键 词： | 电容去离子 碳纳米纤维 静电纺丝 脱盐 电化学 吸附 |
| 收稿时间： | 2020-01-19 |
| 修稿时间： | 2020-04-01 |
ZIF-derived porous carbon nanofibers for high-efficiency capacitive deionization |
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| GAO Lijun,BAI Silin,LIANG Sucen,MU Ye,DONG Qiang,HU Chao.ZIF-derived porous carbon nanofibers for high-efficiency capacitive deionization[J].Journal of Chemical Industry and Engineering(China),2020,71(6):2760-2767. |
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| Authors: | GAO Lijun BAI Silin LIANG Sucen MU Ye DONG Qiang HU Chao |
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| Affiliation: | College of Chemical Engineering and Technology, Xi’an Jiaotong University, Xi’an 710049, Shaanxi, China |
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| Abstract: | As an environmentally-friendly and energy-saving desalination technology, capacitive deionization (CDI) is becoming an important desalination technology to replace reverse osmosis desalination and electrodialysis desalination. Carbon-based materials have been applied as promising CDI electrodes. However, most of them are powdered and binders are inevitably employed in the process of electrode fabrication, which causes a decline in electrosorption ability. Herein, monolithic porous carbon nanofibers with a flexible structure were synthesized by electrospinning and carbonizing the mixture of zeolitic imidazolate frameworks (ZIFs) and polyacrylonitrile (PAN). Due to the hierarchical porous structure and hydrophilicity, the as-synthesized porous carbon nanofibers exhibited a great salt adsorption capacity of 19.92 mg/g in 500 mg/L NaCl solution under the voltage of 1.2 V, which was two times higher than that of pristine carbon nanofibers. |
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| Keywords: | capacitive deionization carbon nanofibers electrospinning desalination electrochemistry adsorption |
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