Iron Oxide–Gold Composite Nanoparticles and Nano-Gap Junctions for Sensing Applications Using Surface-Enhanced Raman Scattering
Minerals, Metals and Materials Series, ISSN: 2367-1696, Page: 255-275
2021
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Book Chapter Description
Multifunctional iron oxide–gold composite nanostructures with tailored “hot-spot” nano-gap junctions have been produced via a multi-seed-mediated approach and investigated for analyte detection. Tunable nano-gap “hotspot” junctions based on gold nanospheres were rationally created on iron oxide surface and evaluated for surface-enhanced Raman scattering (SERS) enhancement studies for a model reporter analyte, 4-mercaptophenol. Surface-enhanced Raman scattering studies show a three-time enhancement effect for composite gold–iron oxide nanoparticles when compared with gold nanostructures. These enhancements are attributed to the presence of the “hot-spot” junctions and nano-gaps obtained from both: (a) multi-seed-mediated approach that generates larger decoration of iron oxide with plasmonic nanoparticles and (b) aggregated assemblies formed due to the key magnetic iron oxide nanostructures.
Bibliographic Details
http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=85102046415&origin=inward; http://dx.doi.org/10.1007/978-3-030-65249-4_17; http://link.springer.com/10.1007/978-3-030-65249-4_17; http://link.springer.com/content/pdf/10.1007/978-3-030-65249-4_17; https://dx.doi.org/10.1007/978-3-030-65249-4_17; https://link.springer.com/chapter/10.1007/978-3-030-65249-4_17
Springer Science and Business Media LLC
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