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Author Spotlight: Development and Application of SERS Flexible Substrates Using Synthesized AgNPs
Published on: November 17, 2023
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Nanoporous silver nanorods as surface-enhanced Raman scattering substrates
Qiuyan Chen1, Liyan Zhao1, Hong Liu1
1Institute for Composites Science Innovation, School of Materials Science and Engineering, Zhejiang University, Hangzhou, 310000, China.
Biosensors & Bioelectronics
|January 25, 2022
Summary
Researchers developed nanoporous silver nanorods for surface-enhanced Raman scattering (SERS) sensing. These structures efficiently trap analytes and act as SERS hot spots for sensitive detection.
Area of Science:
- Materials Science
- Nanotechnology
- Analytical Chemistry
Background:
- Nanoporous structures are ideal for surface-enhanced Raman scattering (SERS) sensing substrates, offering analyte trapping and SERS-active hot spots.
- Dealloying processes inspire methods for creating nanoporous materials from alloys.
Purpose of the Study:
- To develop a facile method for preparing nanoporous silver (Ag) nanorods for SERS applications.
- To investigate the potential of these nanostructures as sensitive SERS substrates.
Main Methods:
- Fabrication of Ag nanorods via electrodeposition of Ag7O8NO3.
- Chemical reduction of Ag7O8NO3 nanorods using sodium borohydride (NaBH4) to create nanopores.
- Characterization of nanopore formation and SERS activity.
Main Results:
- Successfully synthesized nanoporous Ag nanorods with controlled dimensions.
- Nanopores (average 20 nm) effectively trapped and enriched analytes.
- Demonstrated sensitive detection of adenine, spike glycoprotein, polychlorinated biphenyls, and bacterial identification using the SERS substrates.
Conclusions:
- The developed nanoporous Ag nanorods offer a simple fabrication route and excellent SERS performance.
- These nanostructures show significant promise for trace detection of various analytes, including pollutants and biomolecules.
