基于低温水浴法的涤纶表面氧化锌纳米棒生长

Low-temperature solution growth of ZnO nanorods on PET fabrics

通过简单的两步法在涤纶织物表面生成取向规整的一维ZnO纳米棒阵列。首先利用浸轧法将制备的纳米ZnO溶胶整理到涤纶织物上形成纳米ZnO微晶,然后以微晶为成核晶种,在由六水合硝酸锌及六亚甲基四胺组成的培养液中进行低温水热生长,直接在织物表面生成ZnO纳米棒阵列。场发射扫描电镜及透射电镜的观察结果显示,ZnO纳米棒直径为40～50 nm,长度为300～600 nm。XRD分析表明所得ZnO纳米棒属于纤锌矿型的六角形晶体,且沿c轴生长。涤纶织物表面生长ZnO纳米棒后,UPF值从88.92提升至480.52,与未经处理的织物相比具有极佳的抗紫外线性能。

Oriented one-dimensional ZnO nanorod arrays were prepared on PET fabrics via a simple twostep process.The ZnO nanocrystals were firstly synthesized by sol-gel method and coated onto PET substrates by dip-pad-cure process as nucleation seeds,followed by hydrothermal ZnO growth in aqueous solution of zinc nitrate hexahydrate and hexamethylenetetramine.FE-SEM and TEM images showed the typical ZnO nanorods were 40-50 nm in diameter and 300-600 nm in length.X-ray diffraction result indicated the as-prepared nanorods were of hexagonal wurtzite ZnO structure and its growth direction is along the c-axis.Compared with untreated PET fabrics,the UPF of the PET fabrics with ZnO nanorods increased from 88.92 to 480.52,indicating excellent protection against ultraviolet radiation.