摘要
通过静电纺丝技术制得了聚乙烯醇(PVA)/聚乙烯亚胺(PEI)超细纤维膜,使用戊二醛蒸汽交联使其具有水稳定性,进而将交联后的PEI/PVA超细纤维膜浸入PdCl2溶液中至吸附平衡,以硼氢化钠(NaBH4)为还原剂,于超细纤维膜表面原位合成Pd纳米粒子。用场发射扫描电子显微镜(FE-SEM)、傅里叶变换红外(FTIR)、紫外可见分光光度计(UV)等技术表征了PVA/PEI超细纤维,交联后的PEI/PVA超细纤维膜及负载有Pd纳米粒子的PEI/PVA超细纤维膜。研究表明:交联后的PVA/PEI超细纤维膜具有良好的水相稳定性,Pd纳米粒子在PVA/PEI超细纤维膜表面均匀分布,负载有Pd纳米粒子的PEI/PVA超细纤维膜对Cr(Ⅵ)的还原反应具有良好的催化性能。
Polyvinyl alcohol （PVA）/polyethyleneimine （PEI） superfine fiber membrane were prepared by eleetrospinning technology. Glutaraldehyde vapor （GA） crosslinking was applied to make it have water stability. The cross linked PEI/PVA superfine fiber membrane was then soaked in PdClz solution until adsorption equilibrium. Then, sodium borohydride （NaBH4） served as the reducing agent in situ synthesis of Pd nanoparticles on the surface of superfine fiber membrane. Field emission scanning electron microscope （FE-SEM）, Fourier transformation infrared spectrum （FTIR） and UV-Vis spectroscopy （UV-Vis） were utilized to characterize PVA/PEI superfine fiber membrane, the cross-linked PEI/PVA superfine fiber membrane and PEI/PVA superfine fiber membrane loaded with Pd nanoparticles. The research results showed that the cross-linked PEI/PVA superfine fiber membrane had good water stability; PEI/PVA superfine fiber membrane loaded with Pd nanoparticles presented excellent catalytic performance for reduction reaction of Cr（VI）.
出处
《现代纺织技术》
2013年第5期8-12,共5页
Advanced Textile Technology
