Wang Zhonghui, Gao Qiang, Luo Haihang, Zhao Jianming, Fan Haojun, Chen Yi, Xiang Jun
Key Laboratory of Leather Chemistry and Engineering of Ministry of Education, Sichuan University, Chengdu 610065, China.
National Engineering Research Center of Clean Technology in Leather Industry, Sichuan University, Chengdu 610065, China.
Polymers (Basel). 2024 Jan 29;16(3):369. doi: 10.3390/polym16030369.
In recent years, polyurethane has drawn great attention because of its many advantages in physical and chemical performance. In this work, firstly, polyurethane was impregnated in a non-woven fabric (NWF). Then, polyurethane-impregnated NWF was coagulated utilizing a wet phase inversion. Finally, after alkali treatment, microfiber non-woven fabrics with a porous polyurethane matrix (PNWF) were fabricated and used as substrates. SnInS (SIS) prepared by a microwave-assisted method was used as a photocatalyst and a novel SIS/PNWF substrate with multiple uses and highly efficient catalytic degradation ability under visible light was successfully fabricated. The surface morphology, chemical and crystal structures, optical performance, and wettability of SIS/PNWF substrates were observed. Subsequently, the photocatalytic performance of SIS/PNWF substrates was investigated by the decomposition of rhodamine B (RhB) under visible light irradiation. Compared with SIS/PNWF-2% (2%, the weight ratio of SIS and PNWF, same below), SIS/PNWF-5% as well as SIS/PNWF-15%, SIS/PNWF-10% substrates exhibited superior photocatalytic efficiency of 97% in 2 h. This may be due to the superior photocatalytic performance of SIS and the inherent hierarchical porous structure of PNWF substrates. Additionally, the hydrophobicity of SIS/PNWF substrates can enable them to float on the solution and further be applied on an open-water surface. Furthermore, tensile strength and recycle experiments demonstrated that SIS/PNWF substrates possessed superior mechanical strength and excellent recycle stability. This work provides a facile and efficient pathway to prepare SIS/PNWF substrates for the degradation of organic pollutants with enhanced catalytic efficiency.
近年来，聚氨酯因其在物理和化学性能方面的诸多优势而备受关注。在本工作中，首先将聚氨酯浸渍在无纺布（NWF）中。然后，利用湿相转化法使浸渍有聚氨酯的NWF凝固。最后，经过碱处理，制备出具有多孔聚氨酯基质的微纤维无纺布（PNWF）并用作基底。采用微波辅助法制备的SnInS（SIS）用作光催化剂，成功制备出一种在可见光下具有多种用途和高效催化降解能力的新型SIS/PNWF基底。观察了SIS/PNWF基底的表面形貌、化学和晶体结构、光学性能及润湿性。随后，通过在可见光照射下罗丹明B（RhB）的分解来研究SIS/PNWF基底的光催化性能。与SIS/PNWF-2%（2%，SIS与PNWF的重量比，下同）、SIS/PNWF-5%以及SIS/PNWF-15%相比，SIS/PNWF-10%基底在2小时内表现出97%的优异光催化效率。这可能是由于SIS优异的光催化性能以及PNWF基底固有的分级多孔结构。此外，SIS/PNWF基底的疏水性使其能够漂浮在溶液上，并进一步应用于开放水面。此外，拉伸强度和循环实验表明SIS/PNWF基底具有优异的机械强度和出色的循环稳定性。这项工作为制备用于降解有机污染物且催化效率增强的SIS/PNWF基底提供了一条简便有效的途径。
