Preparation of fluorescent and antibacterial nanocomposite films based on cellulose nanocrystals/ZnS quantum dots/polyvinyl alcohol

In this paper, a fluorescent and antibacterial nanocomposite film based on Zinc sulphide (ZnS) quantum dots, cellulose nanocrystals (CNCs) and polyvinyl alcohol (PVA) was successfully synthesized. CNCs were first decorated in situ with ZnS quantum dots, which were then introduced into a PVA matrix t...

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Bibliographic Details
Published in:Cellulose (London) 2019-03, Vol.26 (4), p.2363-2373
Main Authors: Xie, Wei-Qi, Yu, Kong-Xian, Gong, Yi-Xian
Format: Article
Language:English
Subjects:
Antibacterial materials
Bioorganic Chemistry
Cellulose
Ceramics
Chemistry
Chemistry and Materials Science
Composites
Electron microscopes
Fluorescence
Glass
Nanocomposites
Nanocrystals
Nanoparticles
Natural Materials
Organic Chemistry
Original Research
Physical Chemistry
Polymer Sciences
Polyvinyl alcohol
Quantum dots
Sustainable Development
Ultraviolet radiation
X-ray diffraction
Zinc sulfide
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Summary:In this paper, a fluorescent and antibacterial nanocomposite film based on Zinc sulphide (ZnS) quantum dots, cellulose nanocrystals (CNCs) and polyvinyl alcohol (PVA) was successfully synthesized. CNCs were first decorated in situ with ZnS quantum dots, which were then introduced into a PVA matrix to prepare nanocomposite films with good fluorescent and antibacterial properties. The X-ray diffraction and scanning electron microscope analysis indicated that ZnS nanoparticles were well-dispersed and randomly coated on the CNCs with uniform particle size. The visible emission peak in the ZnS/CNCs nanocomposites was 473 nm with an excitation wavelength of 350 nm. The CNCs loaded with ZnS quantum dots exhibited bright blue fluorescence under the ultraviolet light. Additionally, CNCs/ZnS nanocomposite films also had good antibacterial properties (bacterial inhibition rate = 78.25%). Graphical abstract
ISSN:0969-0239
1572-882X
DOI:10.1007/s10570-019-02245-y