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.
Original language | English |
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Pages (from-to) | 663-668 |
Number of pages | 6 |
Journal | Applied Surface Science |
Volume | 479 |
DOIs | |
Publication status | Published - 15 Jun 2019 |
MoE publication type | A1 Journal article-refereed |
Keywords
- Bacteria
- Cotton
- Escherichia coli
- Silver nanowire
- Surface-enhanced Raman scattering