Errokh A, Ferraria A M, Conceição D S, Vieira Ferreira L F, Botelho do Rego A M, Rei Vilar M, Boufi S
University of Sfax, Faculty of Science, LMES, BP1171-3018 Sfax, Tunisia.
Centro de Química-Física Molecular and Institute of Nanoscience and Nanotechnology, IST, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisbon, Portugal.
Carbohydr Polym. 2016 May 5;141:229-37. doi: 10.1016/j.carbpol.2016.01.019. Epub 2016 Jan 12.
A green, safe and fast procedure is presented for in situ generation of nanoparticles (NPs) of cuprous oxide (Cu2O) onto cotton fibres at room temperature using water as a solvent. The method is based on a mild surface oxidation of cellulose fibres to generate in a controlled way carboxylic groups acting as a binding site for the adsorption of Cu(2+) via electrostatic coordination. Then, the adsorbed Cu(2+) ions were readly converted into Cu2O by dipping the treated cotton fibres into a aqueous solution of a reducing agent. Field-emission scanning electron microscopy (FE-SEM), X-ray photoelectron spectroscopy (XPS) and X-ray diffraction (XRD), as well as UV-vis absorption and emission spectroscopic methods were used to analyse the size, morphology, chemical composition and the crystalline structure of the generated nanoparticles on the fabrics. The morphology of the ensuing Cu2O nanoparticles was shown to be dependent on the reduycing agent used. Antibacterial properties of the modified fibres were also investigated.
本文介绍了一种绿色、安全且快速的方法，可在室温下以水为溶剂，在棉纤维上原位生成氧化亚铜（Cu2O）纳米颗粒（NPs）。该方法基于纤维素纤维的温和表面氧化，以可控方式生成羧基，作为通过静电配位吸附Cu(2+)的结合位点。然后，将处理过的棉纤维浸入还原剂水溶液中，使吸附的Cu(2+)离子迅速转化为Cu2O。采用场发射扫描电子显微镜（FE-SEM）、X射线光电子能谱（XPS）、X射线衍射（XRD）以及紫外可见吸收和发射光谱方法，分析织物上生成的纳米颗粒的尺寸、形态、化学成分和晶体结构。结果表明，所得Cu2O纳米颗粒的形态取决于所使用的还原剂。还研究了改性纤维的抗菌性能。
