| 氧化锆-活性炭纤维复合材料的制备及其对F-吸附性能 |
| Adsorption of Fluoride Ion by Zirconia Functionalized Activated Carbon Fiber |
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| 摘要: 采用水热合成法成功制备了氧化锆-活性炭纤维复合材料,并研究了其对F-的吸附行为。表征结果表明,复合材料中氧化锆粒子成功负载于活性炭纤维上。吸附实验结果表明,负载了氧化锆的活性炭纤维对F-有高效的去除效率,其吸附机理包括离子交换和静电作用力,吸附等温线符合Langmuir等温吸附模式,吸附动力学可用拟二级动力学模型拟合。吸附量随着溶液pH的升高而降低,共存离子Cl-、NO3-和SO42-对F-在氧化锆-活性炭纤维复合材料上的吸附几乎没有影响。 |
| 关键词: 活性炭纤维 氟 吸附 氧化锆 |
| 基金项目: 国家自然科学基金(No.31471699,21407074,51208257),江苏省生态学“十二五”省重点建设学科项目和南京晓庄学院项目(No.2012NJX103)资助。 |
| Abstract: Zirconia functionalized activated carbon fiber (ACF-Zr) adsorbent was successfully prepared using the post-grafting method and its adsorptions for fluoride ion (F-) uptake were investigated in details. Characterized results demonstrated that zirconia was highly dispersed on the surface of active carbon fiber. Adsorption experiment indicated ACF-Zr has high removal efficiency of F-, because of ion exchange andelectrostatic interaction. The adsorption isotherm could be well described by the Langmuir adsorption model and adsorption kinetics on ACF-Zr followed by pseudo-second-order kinetics. The adsorption capacity decreased with the increase of solution pHvalue. Nearly no influence was observed by solution coexisting ions Cl-, NO3- and SO42-. |
| Keywords: active carbon fiber F- adsorption zirconia |
| 投稿时间：2015-01-19 修订日期：2015-04-03 |
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| 刘景亮,宗恩敏,陈欢,许昭怡.氧化锆-活性炭纤维复合材料的制备及其对F-吸附性能[J].无机化学学报,2015,31(6):1105-1111. |
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