Wang Ran, Liu Qingqing, Jiao Tifeng, Li Jinghong, Rao Yandi, Su Jingjing, Bai Zhenhua, Peng Qiuming
State Key Laboratory of Metastable Materials Science and Technology and Hebei Key Laboratory of Applied Chemistry, School of Environmental and Chemical Engineering, Yanshan University, Qinhuangdao 066004, China.
National Engineering Research Center for Equipment and Technology of Cold Strip Rolling, Yanshan University, Qinhuangdao 066004, P. R. China.
ACS Omega. 2019 May 14;4(5):8480-8486. doi: 10.1021/acsomega.9b01085. eCollection 2019 May 31.
In recent years, people pay more attention to environmental pollution and the treatment of sewage has become the focus of recent research. Palladium nanoparticles have good catalytic properties but are easy to agglomerate. Therefore, we used the electrospinning technology to prepare a uniform composite nanofiber film based on polyacrylic acid (PAA) and polyvinyl alcohol (PVA), which demonstrated that they are good carriers of palladium nanoparticles to make the nanoparticles well dispersed. Furthermore, carbon nanotubes (CNTs) were added to increase the specific surface area of the composite nanofiber film and improve its mechanical properties. The successfully synthesized PAA/PVA/CNT-COOH@palladium nanoparticle (PdNP) composite fiber films were characterized by scanning electron microscopy, transmission electron microscopy, and thermogravimetry analysis. -Nitrophenol and 2-nitroaniline were utilized as typical pollutants to further evaluate the catalytic performance of PAA/PVA/CNT-COOH@PdNP composite fiber films. The PAA/PVA/CNT-COOH@PdNP composite fiber films exhibited enhanced catalytic performance and could be reused for eight consecutive cycles. This work provided new clues for the preparation and application of composite electrospun film materials.
近年来，人们越来越关注环境污染问题，污水处理已成为近期研究的焦点。钯纳米颗粒具有良好的催化性能，但容易团聚。因此，我们采用静电纺丝技术制备了基于聚丙烯酸（PAA）和聚乙烯醇（PVA）的均匀复合纳米纤维膜，结果表明它们是钯纳米颗粒的良好载体，能使纳米颗粒很好地分散。此外，添加了碳纳米管（CNTs）以增加复合纳米纤维膜的比表面积并改善其机械性能。通过扫描电子显微镜、透射电子显微镜和热重分析对成功合成的PAA/PVA/CNT-COOH@钯纳米颗粒（PdNP）复合纤维膜进行了表征。利用对硝基苯酚和2-硝基苯胺作为典型污染物，进一步评估PAA/PVA/CNT-COOH@PdNP复合纤维膜的催化性能。PAA/PVA/CNT-COOH@PdNP复合纤维膜表现出增强的催化性能，并且可以连续重复使用八次。这项工作为复合静电纺丝膜材料的制备和应用提供了新的线索。
