Fe₂O₃-Au hybrid nanoparticles for sensing applications via SERS analysis

Technical Report · Thu Jul 27 00:00:00 EDT 2017

DOI:https://doi.org/10.2172/1373538· OSTI ID:1373538

Searles, Emily ^[1]; Murph, Simona Hunyadi ^[2]

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1. Savannah River Site (SRS), Aiken, SC (United States). Savannah River National Lab. (SRNL)
2. Savannah River Site (SRS), Aiken, SC (United States). Savannah River National Lab. (SRNL); Univ. of Georgia, Athens, GA (United States)

Multifunctional iron oxide-gold hybrid nanostructures have been produced via solution chemistries and investigated for analyte detection. Gold nanoparticles of various shapes have been used for probing surface-enhanced Raman scattering (SERS) effects as they display unique optical properties in the visible-near IR region of the spectrum. When coupled with other nanoparticles, namely iron oxide nanoparticles, hybrid structures with increased functionality were produced. By exploiting their magnetic properties, nanogaps or “hot spots” were rationally created and evaluated for SERS enhancement studies. The “hot spots” were created by using a seeded reaction to increase the gold loading on the iron oxide support by 43% by weight. SERS Nanomaterials were evaluated for their ability to promote surface-enhanced Raman scattering of a model analyte, 4-mercaptophenol. The data shows an enhancement effect of the model analyte on gold decorated iron oxide nanoparticles.

• Research Organization: Savannah River Site (SRS), Aiken, SC (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC09-08SR22470
• OSTI ID: 1373538
• Report Number(s): SRNL-STI-2017-00489; TRN: US1801108
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
IRON OXIDES
GOLD
NANOPARTICLES
RAMAN EFFECT