| 一种有效吸附Pb（Ⅱ）的Zr基金属有机凝胶的合成 |
| Synthesis of a Zr-based organometallic gel with effective adsorption of Pb（Ⅱ）ion |
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| 摘要: 以合成的4，4，4-三甲酸三苯胺(H3TCA)为主配体，通过溶剂热法合成了一种超分子无定型的锆基金属有机凝胶(Zr-MOG)。并通过一种简单的恒定时间控制晶化方法，使UIO-66(即Zr-MOF)凝胶化合成非晶态的Zr-MOG。结果表明，所制备的Zr-MOG拥有凝胶软材料的多层结构和非晶聚合物网络，对Pb（Ⅱ）具有良好的吸附能力。此外，以冰醋酸为晶化促进剂，成功地实现了晶态MOF和高分散非晶态MOG的转化。 |
| 关键词: 有机金属凝胶 吸附材料 Zr基金属有机骨架 Pb（Ⅱ） |
| 基金项目: |
| Abstract: In this work, the overall formation of gel groups was studied by using the synthesized 4,4,4-tricarboxytri- phenylamine (H3TCA) as the main ligand. A supramolecular amorphous zirconium- based organometallic gel (Zr- MOG) was synthesized by the solvothermal method. Amorphous Zr-MOG was synthesized by gelation of UIO-66 (i.e. Zr-MOF) by a simple method of constant time-controlled crystallization. The gelation of precursor ZrCl4 was promoted by changing the ratio of metal ligands. The precursor ZrCl4 forms oxide and hydroxide bridges at room temperature, which promotes the formation of [Zr6O4(OH)4]12+ clusters and induces rapid and excessive nucleation rates. The results showed that the prepared Zr-MOG had the multi-layer structure of gel soft materials and amorphous polymer network, and had good adsorption capacity for Pb（Ⅱ）. A series of studies on its adsorption properties were made to verify its recyclability and reusability. In addition, the transformation between crystalline MOF and highly dispersed amorphous MOG was successfully realized by using glacial acetic acid as a crystallization accelerator. |
| Keywords: organometallic gel adsorption material Zr-based metal-organic framework Pb（Ⅱ） |
| 投稿时间：2022-10-08 修订日期：2023-05-26 |
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| 杨云裳,秦凡凡,袁仪祯,张应鹏,梁玉宁.一种有效吸附Pb（Ⅱ）的Zr基金属有机凝胶的合成[J].无机化学学报,2023,39(7):1303-1314. |
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