NiO_x Nanoflower Modified Cotton Fabric for UV Filter and Gas Sensing Applications

Abstract

Integration of multifunctional nanomaterials with textiles could be a significant value addition to the bright future of the growing technology "Technical Textiles". Development of textiles with antielectromagnetic radiation and in particular antiultraviolet features could be one of the best solutions to the ozone depletion induced ultraviolet pollution of the environment, which is a major concern in the context of surging skin cancer cases. In this background, multifunctional nanoflower structured partial hydroxide nickel oxide (NiO x ) was grown on cotton fabric using a chemical bath deposition technique for the development of UV filter and flexible gas/chemical sensor. X-ray diffraction patterns of bare and NiO x modified cotton fabrics confirmed the micro and poly crystalline nature, respectively. Field emission scanning electron microscopic images revealed the growth of 3D green button chrysanthemum flower-like morphology on the surface of cotton fabric. In addition, X-ray photoelectron spectra revealed the presence of nickel, carbon, and oxygen elements in the NiO x modified cotton cellulose. The increase in hydrophobic nature of surface-treated fabric was observed using a goniometer. A differential scanning calorimeter trace for bare and surface modified cotton fabrics exhibited endothermic behavior at the characteristic onset temperature. The results of thermogravimetric analysis revealed the enhanced thermal stability of up to 800 °C for the surface-treated fabric compared to bare cotton. Further, the ultraviolet protection factor (UPF) of the NiO x nanoflower modified cotton fabric was measured using an in vitro method following the AATCC 183:2004 standard using a UV transmittance analyzer. The enhanced absorbance of ultraviolet rays at 388 nm resulted in the UPF of 2000. The chemical/gas sensing features of the surface modified textile samples were investigated using the homemade gas testing chamber. NiO x modified fabric showed a selective response of 12431 toward trimethylamine at room temperature.

Hybrid Antibacterial and Electro-Conductive Coating for Textiles Based on Cationic Conjugated Polymer

“…The FTIR spectra of PET, viscose and 50:50 PET:viscose emeraldine salt-coated fabrics indicated the presence of polyaniline on the fabric surfaces ( Figure 3). The peak at 1308-1340 cm⁻ 1 Hence, it was observed that the concentration of PANI and the type of fabric influence the amount of polyaniline that is incorporated into the fabric. While the PANI concentration has a greater effect at lower concentrations levels, the fabric chemical nature is dominant at higher ones.…”

“…During the past decade, functional textiles have received industrial consideration as well as research attention. In particular, fabrics coated with tailored functional materials have been introduced in the cosmetic, pharma, electronic and medicinal fields for therapeutic, controlled release, protecting, sensing, and monitoring applications [ 1 , 2 , 3 , 4 , 5 , 6 , 7 , 8 , 9 , 10 ]. Among the different types of functional textiles, antibacterial ones are receiving increasing research and development interest due to health risks associated with infectious bacteria and epidemic outbreaks of viruses throughout the world.…”

A Flexible Self‐Powered UV Photodetector and Optical UV Filter Based on β‐Bi2O3/SnO2 Quantum Dots Schottky Heterojunction

“…It is observed that UV light gets absorbed by the UV filter when it is exposed to UV radiation resulting in null transmittance. [ 25 ] The null transmittance property was attained because both the β‐Bi 2 O 3 and SnO 2 molecules have very high UV absorption, which allows them to absorb UV radiation and backscatter non‐transmitted UV radiation, making the polypropylene cloth coated β‐Bi 2 O 3 /SnO 2 a promising UV protection material. [ 26 ] UV filter application could also be extended for wide bandgap semiconductors based on the absorption coefficient, biocompatibility, and availability of the similar structured metal oxides (Ga 2 O 3 ,ZnO).…”

Plant‐Based Structures as an Opportunity to Engineer Optical Functions in Next‐Generation Light Management

“…Note that CeO 2 [109] and flower-like NiO x structures have been also considered. [110] The nanoparticles can be synthesized in situ within the material matrix or ex situ and then added to the matrix. The ex situ approach offers tighter control over NP synthesis, polydispersity, stabilization, and loading into the matrix, all of which enable efficient UV blocking optimization.…”