Upcycling of Dyed Polyester Fabrics into Copper-1,4-Benzenedicarboxylate (CuBDC) Metal–Organic Frameworks
Upcycling of Dyed Polyester Fabrics into Copper-1,4-Benzenedicarboxylate (CuBDC) Metal–Organic Frameworks
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DOI：
10.1021/acs.iecr.3c00226
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发表时间：
2023-03
期刊：
影响因子：
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通讯作者：
Yelin Ko;Tyler J. Azbell;P. Milner;J. Hinestroza
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文献类型：
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作者：
Yelin Ko;Tyler J. Azbell;P. Milner;J. Hinestroza
我们报道了一种以废弃纺织品为原料合成金属有机框架（MOFs）的途径。由聚对苯二甲酸乙酯（PET）制成的废弃物品可能是一种廉价且全球可用的1,4-苯二甲酸（H2BDC）来源，也称为对苯二甲酸，是羧酸基mof的基本组成部分。以往利用废弃PET合成mof的研究主要集中在PET瓶上。相反，我们展示了染色聚酯织物作为原材料的使用。具体来说，我们报道了一种利用对苯二甲酸二钠（Na2BDC）作为连接剂的铜-1,4-苯二甲酸铜（CuBDC）的合成途径，以及我们如何从解聚聚酯织物中获得连接剂。为了促进铜离子和Na2BDC之间的配合，并创造一个有利于合成cudbcmof而不是金属氧化物副产物的局部酸性环境，我们在铜前驱体溶液中加入乙酸。液滴大小的ph控制域使得在室温下形成CuBDC MOF晶体，比传统的溶剂热方法要短得多。我们用粉末x射线衍射（PXRD）、扫描电镜（SEM）、热重分析（TGA）和傅里叶变换红外（FTIR）光谱证实了所得的MOF结构，我们的结果与之前的报道在定量上一致。此外，我们使用不同的铜盐作为金属源，不同的彩色染色聚酯织物作为连接源，证明了所提出的合成路径的多功能性。这些结果可能为利用废弃纺织品作为原材料开辟一条道路，并为管理纺织废物提供一种更循环的方法。
We report on a pathway to synthesize metal–organic frameworks (MOFs) using discarded textiles as a raw material. Discarded objects made of poly(ethylene terephthalate) (PET) could be an inexpensive and globally available source for 1,4-benzenedicarboxylic acid (H2BDC), also known as terephthalic acid, a building block of carboxylate-based MOFs. Previous studies on using discarded PET to synthesize MOFs have mainly focused on PET bottles. In contrast, we demonstrate the use of dyed polyester fabrics as a raw material. Specifically, we report on a synthesis path for copper-1,4-benzenedicarboxylate (CuBDC) utilizing disodium terephthalate (Na2BDC) as a linker and on how we obtained the linker from depolymerized polyester fabrics. To facilitate coordination between the copper ions and Na2BDC and create a localized acidic environment that favors the synthesis of CuBDC MOFs rather than metal oxide byproducts, we added acetic acid to the copper precursor solution. The drop-sized pH-controlled domain enabled the formation of CuBDC MOF crystals at room temperature and at a fraction of time shorter than traditional solvothermal methods. We confirmed the resulting MOF structures using powder X-ray diffraction (PXRD), scanning electron microscopy (SEM), thermogravimetric analysis (TGA), and Fourier transform infrared (FTIR) spectroscopy, and our results were in quantitative agreement with previous reports. Furthermore, we used different copper salts as metal sources and different color-dyed polyester fabrics as linker sources, demonstrating the versatility of the proposed synthesis path. These results may open an avenue for using discarded textiles as a raw material and offer a more circular approach for managing textile waste.