Journal
ACS APPLIED BIO MATERIALS
Volume 1, Issue 5, Pages 1398-1407Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsabm.8b00348
Keywords
fluorescent hydrogel; biomass carbon dots; alginate; cellulose nanofibers; fluorescent sensing
Funding
- National Science Foundation of China [51673072]
- Independent Study Projects of the State Key Laboratory of Pulp and Paper Engineering [2017C04]
- Fundamental Research Funds for the Central Universities, SCUT [2017ZD077]
- National Program for Support of Top-notch Young Professionals of China
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This work describes an all-biomass fluorescent hydrogel fabricated by functionalizing alginate (ALg) and cellulose nanofibers (CNF) hydrogels with fluorescent biomass carbon dots (CQDs) derived from glucose, xylose, and glucosamine. The biomass CQDs played dual functions in the composite hydrogels: first, endowing hydrogels with good fluorescent characters; second, enhancing the mechanical properties of hydrogels because of the cross-linking effect of the abundant oxygen-containing groups or amino groups on surface with ALg or CNF. The elastic modulus of ALg hydrogel and CNF hydrogel was increased by 4.7 times and 1.5 times, respectively, by the adding CQDs. As a proof of concept, ALg/CQDs-3 hydrogel and CNF/CQDs-3 hydrogel were used to detect Fe3+ ions and gold nanoparticle (AuNPs) in aqueous solution, showing high sensitivity. The prepared all-biomass fluorescent hydrogels hold great potential in biological imaging, biosensing, and biological monitoring fields.
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