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| ZIF-67/PVDF杂化膜的制备及其提取钯的性能研究 |
| Study on Preparation of ZIF-67/PVDF Hybrid Membrane and Its Pd Extraction Performance |
| 投稿时间：2020-04-21 |
| DOI： |
| 中文关键词: 杂化膜 金属有机框架材料 自组装 钯 |
| 英文关键词: hybrid membrane metal organic framework material self-assembly palladium |
| 基金项目:江苏省高校自然科学研究重大项目(16KJA43007)；江苏省凹土资源利用重点实验室开放课题(HPK201804) |
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| 中文摘要: |
| 以硝酸钴和2-甲基咪唑合成了金属有机框架材料ZIF-67，用层层自组装法将聚乙烯亚胺(PEI)、ZIF-67和聚乙烯醇(PAA)浸渍负载于聚偏氟乙烯(PVDF)超滤管上，得到ZIF-67/PVDF杂化膜。XRD、SEM和FT-IR表征结果显示ZIF-67成功负载在PVDF管表面及内壁面，负载效果良好。用杂化膜对钯溶液-聚电解质进行超滤，结果表明杂化膜对钯具有较强的吸附能力，且反复使用3次其截留性能无明显降低。 |
| 英文摘要: |
| The metal organic framework material ZIF-67 was synthesized with cobalt nitrate and 2-methylimidazole. Polyethyleneimine (PEI), ZIF-67 and polyvinyl alcohol (PAA) were impregnated and loaded on a polyvinylidene fluoride (PVDF) ultrafiltration tube by a layer-by-layer self-assembly method to obtain a ZIF-67/PVDF hybrid membrane. XRD, SEM and FT-IR characterization results showed that ZIF-67 was successfully loaded on the surface and inner wall of the PVDF tube, and the loading effect was good. The hybrid membrane was used to ultrafilter the palladium solution-polyelectrolyte. The results showed that the hybrid membrane had a strong adsorption capacity for palladium, and its retention performance had not significantly decrease after repeated use for 3 times. |
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