One-step hydrothermal synthesis of a flexible nanopaper-based Fe3+ sensor using carbon quantum dot grafted cellulose nanofibrils

Photoluminescent flexible nanopaper-based Fe 3+ sensors were fabricated by carbon quantum dot (CQD) grafted oxidized cellulose nanofibrils (OCNF). Transparent and tunable luminescent CQD–OCNF nanopapers were facilely synthesized from citric acid, ethanediamine and an OCNF suspension using a one-pot...

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Bibliographic Details
Published in:Cellulose (London) 2020, Vol.27 (2), p.729-742
Main Authors: Xue, Bailiang, Yang, Yang, Tang, Rui, Sun, Yongchang, Sun, Shaoni, Cao, Xuefei, Li, Peiyi, Zhang, Zhao, Li, Xinping
Format: Article
Language:English
Subjects:
Bioorganic Chemistry
Carbon
Cellulose
Ceramics
Chemistry
Chemistry and Materials Science
Citric acid
Composites
Ferric ions
Fluorescence
Glass
Infrared spectroscopy
Morphology
Natural Materials
NMR spectroscopy
Organic Chemistry
Original Research
Photoluminescence
Physical Chemistry
Polymer Sciences
Quantum dots
Selectivity
Spectrum analysis
Sustainable Development
X ray photoelectron spectroscopy
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Summary:Photoluminescent flexible nanopaper-based Fe 3+ sensors were fabricated by carbon quantum dot (CQD) grafted oxidized cellulose nanofibrils (OCNF). Transparent and tunable luminescent CQD–OCNF nanopapers were facilely synthesized from citric acid, ethanediamine and an OCNF suspension using a one-pot hydrothermal method without catalysts. The morphology and chemical structures of the CQD–OCNF nanopapers were investigated by TEM, SEM, XRD, FT-IR spectroscopy, XPS and CP/MAS 13 C NMR spectroscopy. The carboxyl groups of OCNF were covalently bonded to the amino groups of the newly-formed CQDs. The resultant CQD–OCNF nanopapers presented high transparency in bright field imaging and strong blue emission under ultraviolet excitation. The CQD–OCNF nanopaper was used as a highly sensitive and selective fluorescent sensor for Fe 3+ ions. This study provides a facile and effective method for fabricating luminescent CQD–OCNF nanopapers with high selectivity for the detection of Fe 3+ . Graphic abstract
ISSN:0969-0239
1572-882X
DOI:10.1007/s10570-019-02846-7