Hydraulically pressed silver nanowire-cotton fibers as an active platform for filtering and surface-enhanced Raman scattering detection of bacteria from fluid

Research output: Contribution to journalArticleScientificpeer-review

Researchers

  • Bright Ankudze
  • Bismark Asare
  • Steffi Goffart
  • Arto Koistinen
  • Tarmo Nuutinen
  • Antti Matikainen

  • Sampson Saj Andoh
  • Matthieu Roussey
  • Tuula T. Pakkanen

Research units

  • University of Eastern Finland

Abstract

Silver and gold nanoparticles-decorated cotton fiber substrates constitute an important group of the simple, inexpensive and versatile platforms for a SERS-based detection of biomolecules. However, the fibrous cotton embedded with metal nanoparticles is yet to be explored as a filter-like substrate for isolation and detection of pathogens from fluid. In this study, we present a straightforward approach based on hydraulic pressing to make a silver nanowire-decorated cotton fibers substrate a realistic platform for effective filtering and detection of bacteria from urine. Silver nanowires were anchored on cotton fibers using an aminopropyltrimethoxysilane as a linker. The obtained silver nanowire-cotton fiber material was compressed with a hydraulic press to substantially reduce the free spaces between the individual fibers. As a proof-of-concept, the prepared substrate was employed to effectively filter Escherichia coli bacteria from phosphate-buffered saline solution and urine. The silver nanowire-cotton SERS substrate thus serves as a low-cost and active platform for an effective detection of bacteria from fluids.

Details

Original languageEnglish
Pages (from-to)663-668
Number of pages6
JournalApplied Surface Science
Volume479
Publication statusPublished - 15 Jun 2019
MoE publication typeA1 Journal article-refereed

    Research areas

  • Bacteria, Cotton, Escherichia coli, Silver nanowire, Surface-enhanced Raman scattering

ID: 32483351