Polyimide nanofiber aerogel with hierarchical porosity: a novel platform in high-temperature oil absorption

IF 3.2 4区材料科学 Q2 MATERIALS SCIENCE, CERAMICS Journal of Sol-Gel Science and Technology Pub Date : 2025-02-10 DOI:10.1007/s10971-025-06694-9

Lidong Tian, Yi Zhang, Yibin Liu, Shan Zhang

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Abstract

The development of advanced oil sorbents with superior thermal stability, high adsorption capacity, and excellent reusability is crucial for addressing hot oil leakage challenges, particularly in the petrochemical and machinery industries. This study presents a novel polyimide (PI) nanofiber aerogel (PIF-a) designed for high-temperature oil absorption. Utilizing electrospinning and post-treatment, PIF-a exhibits a hierarchical pore structure, ultralow density, and remarkable flexibility. At room temperature, PIF-a demonstrates an oil adsorption capacity of 83.1 g/g, surpassing conventional materials. Notably, PIF-a retains structural integrity up to 250 °C, with a hot oil adsorption capacity of 78.6 g/g at 200 °C. Despite repeated adsorption-desorption cycles, PIF-a’s capacity remains stable, retaining over 90% of its initial performance. This breakthrough material, with its exceptional thermal stability, rapid adsorption kinetics, and durable reusability, represents a significant advancement in high-temperature oil absorption technology, broadening the application potential of nanofiber-based materials in addressing environmental oil spill emergencies.

Graphical Abstract

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具有分层孔隙度的聚酰亚胺纳米纤维气凝胶：一种新型高温吸油平台

开发具有优异热稳定性、高吸附能力和优异可重复使用性的先进吸油剂对于解决热油泄漏问题至关重要，特别是在石油化工和机械行业。提出了一种用于高温吸油的新型聚酰亚胺纳米纤维气凝胶（PIF-a）。利用静电纺丝和后处理，PIF-a具有分层孔结构，超低密度和显著的柔韧性。在室温下，PIF-a表现出83.1 g/g的油吸附能力，超过了传统材料。值得注意的是，PIF-a在高达250°C时保持结构完整性，在200°C时具有78.6 g/g的热油吸附容量。尽管反复的吸附-解吸循环，PIF-a的容量仍然稳定，保留了其初始性能的90%以上。这种突破性材料具有优异的热稳定性、快速的吸附动力学和持久的可重复使用性，代表了高温吸油技术的重大进步，扩大了纳米纤维基材料在应对环境溢油紧急情况方面的应用潜力。图形抽象

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来源期刊

Journal of Sol-Gel Science and Technology 工程技术-材料科学：硅酸盐

CiteScore

4.70

自引率

4.00%

发文量

280

审稿时长

2.1 months

期刊介绍： The primary objective of the Journal of Sol-Gel Science and Technology (JSST), the official journal of the International Sol-Gel Society, is to provide an international forum for the dissemination of scientific, technological, and general knowledge about materials processed by chemical nanotechnologies known as the "sol-gel" process. The materials of interest include gels, gel-derived glasses, ceramics in form of nano- and micro-powders, bulk, fibres, thin films and coatings as well as more recent materials such as hybrid organic-inorganic materials and composites. Such materials exhibit a wide range of optical, electronic, magnetic, chemical, environmental, and biomedical properties and functionalities. Methods for producing sol-gel-derived materials and the industrial uses of these materials are also of great interest.