The detection of toxic gas molecules using the surface-enhanced Raman spectroscopy (SERS) technique is very challenging due to the low affinity of gas molecules. Here, we report extremely sensitive SERS-based NO2 gas sensors based on 3D nanoporous Au nanostructures with a high affinity for NO2 gas molecules and high density of hotspots.
S. Kim, H. S. Jung, D. Kim, S. Kim and S. Park, Analyst, 2019, 144, 7162 DOI: 10.1039/C9AN01697J
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