Journal
CARBOHYDRATE POLYMERS
Volume 217, Issue -, Pages 15-25Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.carbpol.2019.04.042
Keywords
Radiation-induced graft polymerization; Multifunctional interface; Photocatalysis; Nano-hybrid layer; ZnO nanostructure
Categories
Funding
- National Key R&D Program of China [2016YFB0303004]
- National Natural Science Foundation of China [11305243, 11675247]
- Science Challenge Project [TZ2018004]
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A bifunctional interfacial layer was introduced onto the surface of cotton fabric which not only enhanced the interfacial bonding between Ag@ZnO and organic substrates but also improved the photocatalytic performance simultaneously. In detail, a modified cotton fabric (denoted as Cot-g-Si/Ag@ZnO) was fabricated through radiation-induced graft polymerization of.-methacryloxypropyl trimethoxysilane and followed the in-situ formation of ZnO and loading of Ag nanoparticles simultaneously. Owing to ZneOeSi between the graft chains and Ag@ZnO photocatalyst, the charge carrier concentration increased and Ag was prevented from oxidizing through the partial separation from ZnO, leading to enhanced near-field amplitudes of the localized surface plasmon resonance. Cot-g-Si/Ag@ZnO also exhibited excellent photocorrosion resistance, photostability and laundering durability. Its photocatalytic activity was fully maintained after several photodegradation cycles; moreover, after laundering durability test, the photocatalytic activity was improved compared with the newly prepared one. Credible mechanism for the photocatalytic activity of Cot-g-Si/Ag@ZnO under sunlight irradiation is proposed.
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