Textile Materials Treatment With Mixture of TiO₂:N and SiO₂ Nanoparticles for Improvement of Their Self-Cleaning Properties

ABSTRACT

This study addresses the deposition with improved adhesion of TiO₂:N/SiO₂ mixture, with different concentrations of the nano-powders (NPs) (1:0,5; 1:1 and 1:1,5) on 100% cotton fabrics. The characteristics of the deposited thin films were investigated by scanning electron microscopy (SEM), Rutherford backscattering spectrometry (RBS), Raman scattering, FTIR, and UV-VIS absorption spectroscopy. To improve the treatment durability to the external factors, the different crosslinking methods were used. Photocatalytic activity of functionalized textile fabrics was evaluated by determining the photodegradation efficiency of the methylene blue (MB) dye and forest juice, measuring the color difference of the irradiated samples compared with non-irradiated samples. Washing durability of the samples was achieved qualitatively by determining the photocatalytic activity remaining on the textile fabrics after 1 and 5 washing cycles. The samples treated with the mixture of TiO₂:N/SiO₂ have demonstrated improved self-cleaning properties, the highest photocatalytic activity being obtained for the highest value of TiO₂:N/SiO₂ NPs molar concentrations equal to 1:1.

摘要

本研究探讨了在100%纯棉织物上使用不同浓度的纳米粉末（NPs）（1:0,5;1:1和1:1,5）改善TiO2:N/SiO2混合物粘附性的沉积. 利用扫描电子显微镜（SEM）、卢瑟福背散射光谱（RBS）、拉曼散射、FTIR和UV-VIS吸收光谱对沉积薄膜的特性进行了研究. 为了提高处理对外界因素的耐用性，采用了不同的交联方法. 通过测定亚甲基蓝（MB）染料和森林汁的光降解效率，测量辐照样品与未辐照样品的色差，评价了功能化纺织品的光催化活性. 通过测定织物在1个和5个洗涤周期后的光催化活性，定性地获得了样品的洗涤耐久性. 用TiO2:N/SiO2混合物处理的样品显示出改善的自清洁性能，当TiO2:N/SiO2 NPs摩尔浓度的最高值等于1:1时，可获得最高的光催化活性.

KEYWORDS:

• TiO₂:N
• SiO₂
• nanoparticles
• cotton
• optical properties
• photocatalytic activity

关键词:

• TiO₂:N
• SiO₂
• 纳米颗粒
• 棉花
• 光学特性
• 光催化活性

Additional information

Funding

This work was supported by a grant of the Romanian Ministry of Research and Innovation, PCCDI-UEFISCDI, project number PN-III-P1.2-PCCDI-2017-0743/44, within PNCDI III and Core Program PN19-03 (no. 21N/08.02.2019).