University of Sfax, Faculty of Science, LMSE, BP1171, 3018 Sfax, Tunisia.
University of Sfax, Faculty of Science, LCI, BP1171, 3018 Sfax, Tunisia.
Int J Biol Macromol. 2019 May 1;128:902-910. doi: 10.1016/j.ijbiomac.2019.01.218. Epub 2019 Feb 1.
The functionalization of cotton fabric with photoactive TiO-Ag-AgBr nanostructured layer has been successfully developed using a low temperature non-aqueous sol-gel route and aqueous suspension of AgBr. Evidence for the growth of TiO layer and the immobilization of AgBr nanoparticles have been confirmed by Raman, XRD and XPS. GSDR analysis revealed a strong absorption in the visible region brought by surface Plasmon resonance (SPR) of Ag nanocrystals generated at the surface of AgBr. The XPS evidenced the presence of Ag, Ag and bromine, suggesting that Ag formed a shell around the deposited AgBr. The immobilized TiO-Ag-AgBr heterostructured layer imparts a strong photocatalytic activity under visible light for the degradation of dyes in aqueous solution as well as of dimethyl methylphosphonate (DMMP), a chemical warfare agent simulant. These new catalytically active functionalized fabrics, with self-detoxification properties, have great potential for application in chemical protective clothes and might offer new opportunities for the design of functional materials for toxic chemical protection.
采用低温非水溶胶-凝胶路线和 AgBr 水悬浮液，成功地将光活性 TiO-Ag-AgBr 纳米结构层功能化到棉织物上。拉曼、XRD 和 XPS 证实了 TiO 层的生长和 AgBr 纳米粒子的固定。GSDR 分析显示，AgBr 表面生成的 Ag 纳米晶体的表面等离子体共振（SPR）在可见光区产生了强烈的吸收。XPS 证明了 Ag、Ag 和溴的存在，表明 Ag 在沉积的 AgBr 周围形成了壳层。固定的 TiO-Ag-AgBr 异质结构层在可见光下赋予了强的光催化活性，可用于水溶液中染料的降解以及化学战剂模拟物二甲基甲基膦酸酯（DMMP）的降解。这些具有自解毒性能的新型催化活性功能化织物在化学防护服中的应用具有很大的潜力，并且可能为有毒化学防护的功能材料设计提供新的机会。
