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| 铋和石墨烯改性金属有机框架对碘离子的吸附性能 |
| Adsorption Properties of Metal Organic Frameworks Modified by Bismuth and Graphene for Iodide Ions |
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| DOI： |
| 中文关键词: 碘离子 石墨烯 铋 金属有机框架 吸附性能 水质 |
| 英文关键词: Iodide Graphene Bismuth Metal organic frameworks Adsorption Water quality |
| 基金项目:河南省科学技术厅科技计划基金资助项目(182102210420) |
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| 摘要点击次数: 656 |
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| 中文摘要: |
| 采用一步法制备石墨烯(GO)和铋［Bi(Ⅲ)］改性沸石咪唑酯骨架结构(ZIF-8)，得到GZIF和Bi@GZIF吸附剂，并用X射线衍射(XRD)、傅里叶变换红外光谱(FTIR)及扫描电镜(SEM)对制备的吸附剂进行表征。结果显示，改性后ZIF-8晶体结构没有被破坏，表面形态及表面基团发生了变化，对碘离子的吸附能力增强，吸附速度加快，尤其是Bi@GZIF在5 min内完成吸附883%，最大吸附容量达1972 mg/g。 |
| 英文摘要: |
| GZIF and Bi@GZIF adsorbents were prepared by one step method using metal organic frameworks ZIF 8 as substrate and modified by bismuth ［Bi(Ⅲ)］ and graphene(GO). The prepared adsorbents were characterized by XRD, FTIR and SEM. The results showed that the crystal structure of ZIF 8 modified by bismuth and grapheme was not been destroyed, but the surface morphology and surface groups changed. The adsorption capacities for iodide ions were enhanced and the adsorption speed was increased. Especially Bi@GZIF,the maximum adsorption capacity was up to 197.2 mg/g and 88.3% of iodide ions removal was achieved in 5 min. |
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