Multi-functional regenerated cellulose fibers decorated with plasmonic Au nanoparticles for colorimetry and SERS assays

Research output: Contribution to journalArticleScientificpeer-review

Researchers

Research units

  • Liaoning University of Petroleum and Chemical Technology
  • Shandong University of Science and Technology
  • Cornell University
  • Oregon State University

Abstract

Abstract: Multi-functional cellulose fiber-Au composites were fabricated through a simple and cost-effective procedure by decorating regenerated cellulose fibers with Au nanoparticles. The cellulose fibers were regenerated from waste paper through the Ioncell-F process, an environmental friendly approach. After grafting positive charge, the surface of the cellulose fibers were decorated with citrate-stabilized plasmonic Au nanoparticles (NPs). X-ray photoelectron spectroscopy, scanning electron microscopy, X-ray diffraction, and optical images were used to characterize the regenerated cellulose fibers and fiber-Au NP composites. The fiber-Au composites exhibited different colors as the localized surface plasmon resonance property of Au NPs, which enables visual sensing of the water content in the fiber-Au composites through a colorimetric method. Furthermore, the regenerated cellulose fiber-Au composite was used as an enhanced substrate for the sensing of malachite green via surface-enhanced Raman scattering, in which the limit of detection was lower than 10 ppb. The multi-functional cellulose fibers are potentially suitable for the detection of toxins and the monitoring of water quality. Graphical abstract: [Figure not available: see fulltext.].

Details

Original languageEnglish
Number of pages13
JournalCellulose
Early online date1 Jan 2018
Publication statusPublished - 25 Aug 2018
MoE publication typeA1 Journal article-refereed

    Research areas

  • Colorimetric, Plasmonic nanoparticles, Regenerated cellulose fibers, SERS sensor, Waste paper

ID: 27796687