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Fabrication of PANI@TiO₂ nanocomposite and its sunlight-driven photocatalytic effect on cotton fabrics
journal contributionposted on 2020-01-01, 00:00 authored by Hai Zhao, Zhenyu Li, Xi Lu, Wu Chen, Yongming Cui, Bin TangBin Tang, Jinfeng Wang, Xungai Wang
Polyaniline (PANI) layer was successfully coated onto titanium dioxide nanoparticles (TiO2 NPs) through polymerization of aniline under UV light irradiation. Thickness of the PANI layer was controlled by adjusting the aniline amount added in the reaction system. Morphologies of the PANI coated TiO2 nanocomposite (PANI@TiO2) were obtained using transmission electron microscope (TEM). The optical properties of the composite nanoparticles were characterized by UV-vis adsorption spectroscopy. Fourier-transform infrared spectroscopy (FTIR), X-ray powder diffraction (XRD) and X-ray photoelectron spectroscopy (XPS) were also used to analyze the prepared nanocomposites. The PANI@TiO2 with a thin layer of PANI showed enhanced photocatalytic activity under simulated sunlight. The nanocomposites were coated onto mercerized cotton fabrics to endow the fabrics strong self-cleaning ability under sunlight. Furthermore, the PANI layer renders positive charges to TiO2 NPs and the mercerization treatment of cotton increases the amount of the hydroxyl groups on the surface, Both of these two factors promote the successful coating of TiO2 NPs on cotton. These results provide new insight for design of interface interaction between particles and fiber surface. Significantly, the convenient UV induced preparation method of PANI@TiO2 could achieve an easy scale-up manufacture of photocatalytic materials for functionalization of textiles.
JournalJournal of the Textile Institute
Publication classificationC Journal article; C1 Refereed article in a scholarly journal
Copyright notice2020, Textile Institute
enhanced photocatalysistitanium dioxidepolyanilineself-cleaningfunctional fabricScience & TechnologyTechnologyMaterials Science, TextilesMaterials ScienceSURFACE MODIFICATIONHETEROGENEOUS PHOTOCATALYSISTIO2 PHOTOCATALYSTSORGANIC POLLUTANTSDEGRADATIONNANOPARTICLESABSORPTIONOXIDATIONDYESMechanical Engineering