Biogenic silver-doped mesoporous silica nanoparticles for multifunctional eco-designed textile printing

Abstract

The current study concerns the valorization of waste rice hulls into value-added materials. To achieve this goal, first, the extraction route of mesoporous silica nanoparticles (SiO2NPs) from rice hulls using citric acid as a carbon template was compared with that prepared by conventional methods of incineration only. Both routes were performed at different temperatures of 600 and 700°C, and the fabricated SiO2NPs were studied by N2 physisorption isotherm, X-ray diffraction (XRD), Fourier transform infrared (FTIR), dynamic light scattering (DLS), and thermogravimetric (TG) analyses. The results show the influence of both routes and temperature on the porous structure, surface area, and charge of as-fabricated SiO2NPs. Furthermore, the physico-chemical features of as-prepared mesoporous SiO2NPs were utilized, in a facile and green way, to prepare silver NPs with high anti-microbial activity. The results were validated by the tools of UV-visible, FTIR, XRD, and XPS spectroscopy. Finally, the fabricated silver-doped mesoporous SiO2NPs were used as auxiliary additives through one-pot printing of different types of fabric (i.e., polyester (synthetic fabric), cotton (natural fabric), and cotton/polyester (blended fabric)). The EDX mapping of the pigment-printed fabrics with Ag-doped SiO2NPs exhibited the homogeneous distribution of Ag and Si atoms together with C and O throughout the fabric matrix. Interestingly, the pigment-printed fabrics with Ag-doped SiO2NPs demonstrated superior antibacterial activity, ultraviolet protection factor (UPF), and color characteristics in comparison to the conventional dyeing component. Graphical Abstract

Exploration on ability of printable modified papers for the application in heat sublimation transfer printing of polyester fabric

“…Fastness measurements of washing, perspiration, and light were assessed according to standard methods AATCC technical manual, method 8 (1989) 68, 23 (1993); 15 (1989) 68, (1993) 30 and 16(2004) respectively 19 . The rubbing fastness was assessed according to AATCC 1993b 10 .…”

“…Rice husk (RH) contains cellulose (50%), lignin (30%), and organic compounds (20%) with reduced nutritional value and high silica content 9 , 10 . Rice husk ash (RHSA) is a light, bulky, and highly porous material that is used in a variety of industries including ceramics, brick, and concrete.…”

Exploration on Ability of Printable modified papers for the application in heat sublimation transfer printing of polyester fabric

“…Eight million tons of rice are approximately produced annually, causing the generation of huge amounts of byproducts, mainly rice straw (RS) and rice husk (RH). Rice husk (RH) contains cellulose (50%), lignin (30%), and organic compounds (20%) with reduced nutritional value and high silica content 9,10 . Rice Husk Ash (RHSA) is a light, bulky, and highly porous material that is used in a variety of industries including ceramics, brick, and concrete.…”