华中科技大学化学与化工学院 能量转换与存储材料化学教育部重点实验室 材料化学与服役失效湖北省 重点实验室 武汉 430074
E-mail: gongjiang@hust.edu.cn
收稿:2026-04-22,
录用:2026-05-13,
网络首发:2026-07-22,
移动端阅览
张鑫瑶, 朱小艳, 温雪莹, 胡桂新, 王慧悦, 戴郅焜, 牛冉, 龚江. 废弃尼龙升级化学回收制备铝基金属-有机框架材料及其水伏发电性能. 高分子学报, doi: 10.11777/j.issn1000-3304.2026.26133.
Zhang, X. Y.; Zhu, X. Y.; Wen, X. Y.; Hu, G. X.; Wang, H. Y.; Dai, Z. K.; Niu, R.; Gong, J. Construction of aluminum metal-organic frameworks via upcycling chemical recycling of waste nylon for hydrovoltaic power generation. Acta Polymerica Sinica (in Chinese), doi: 10.11777/j.issn1000-3304.2026.26133.
张鑫瑶, 朱小艳, 温雪莹, 胡桂新, 王慧悦, 戴郅焜, 牛冉, 龚江. 废弃尼龙升级化学回收制备铝基金属-有机框架材料及其水伏发电性能. 高分子学报, doi: 10.11777/j.issn1000-3304.2026.26133. DOI: CSTR: 32057.14.GFZXB.2026.7627.
Zhang, X. Y.; Zhu, X. Y.; Wen, X. Y.; Hu, G. X.; Wang, H. Y.; Dai, Z. K.; Niu, R.; Gong, J. Construction of aluminum metal-organic frameworks via upcycling chemical recycling of waste nylon for hydrovoltaic power generation. Acta Polymerica Sinica (in Chinese), doi: 10.11777/j.issn1000-3304.2026.26133. DOI: CSTR: 32057.14.GFZXB.2026.7627.
废弃尼龙难降解且高值化利用途径有限,将其转化为功能材料具有重要意义. 本研究以废弃尼龙66为原料,经碱性水解获得的降解液无需分离纯化,直接在水相中引入铝盐,其中的降解产物己二酸(adipic acid,简称ADP)作为有机配体构筑铝基金属-有机框架(MOF)材料(命名为Al-ADP),实现了由废弃尼龙到功能MOF材料的绿色升级转化. Al-ADP具有MIL-53(Al)型结构,呈由纳米棒组装形成的纳米花形貌,并具有微介孔协同的分级孔结构. 进一步将Al-ADP与聚乙烯醇交联后负载于粘胶无纺布表面,构筑柔性水伏发电膜器件,在20 ℃、相对湿度59%条件下可稳定输出0.41 V电压和4.76 µA电流. 户外集成测试20个器件实现了6.59 V的串联输出电压与38 µA的并联输出电流. 分子动力学模拟结果表明,Na
+
扩散系数高于Cl
-
,证明Al-ADP膜蒸发器可通过界面双电层与连续传输通道协同促进离子选择性迁移,从而实现稳定电荷分离. 本研究实现了废弃尼龙向功能MOF材料的高值化转化,为蒸发驱动发电材料设计及废弃塑料资源化利用提供了新思路.
The staggering accumulation of plastic waste necessitates advanced strategies for the upcycling of engineering plastics like nylon 66 (PA66)
which was characterized by high chemical stability and limited high-value recycling pathways. Herein
we reported a sustainable and green upcycling strategy that transformed waste PA66 fishing nets into high-performance aluminum-based metal-organic framework (MOF) nanomaterials (named as Al-ADP) for evaporation-driven hydrovoltaic energy harvesting. Through an efficient alkaline hydrothermal process
PA66 was depolymerized into a monomer-rich solution containing adipic acid (ADP)
which served as the organic ligand for the direct aqueous synthesis of Al-ADP. This direct synthesis strategy bypassed the laborious separation and purification of ligands
significantly enhancing the environmental and economic efficiency of the recycling process. The synthesized Al-ADP possessed a MIL-53(Al)-type topology and a hierarchical porous nanoflower morphology assembled from one-dimensional nanorods. By cross-linking Al-ADP with poly(vinyl alcohol) (PVA) and loading it onto a flexible viscose non-woven fabric
a robust hydrovoltaic generator was fabricated. Under typical ambient conditions (20 ℃
59% relative humidity)
a single device yielded a stable output voltage of 0.41 V a
nd a current of 4.76 µA. Comprehensive environmental testing demonstrated that the device performance is highly responsive to temperature
humidity
and wind speed
with relative humidity identified as the dominant regulatory factor. To evaluate practical scalability
an array of 20 integrated devices was tested in an outdoor environment
successfully delivering a series output of 6.59 V and a parallel output of 38 µA. Furthermore
molecular dynamics (MD) simulations provided molecular-level insights into the hydrovoltaic mechanism. It was discovered that the diffusion coefficient of Na
+
is substantially higher than that of Cl
-
within the Al-ADP channels. This ionic selectivity is driven by the synergistic effect of the charged Al-ADP interfaces (abundant in carboxyl and Al―O coordination sites) and the continuous nanostructured pathways
which together facilitate effective charge separation during evaporation-induced fluid transport. This work not only establishes a closed-loop system for waste plastic upcycling but also offers a scalable and low-cost material platform for sustainable off-grid power generation.
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