Journal
NANOSCALE
Volume 5, Issue 20, Pages 10029-10033Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c3nr03460g
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Funding
- Natural Science Foundation of China [21071106]
- National Basic Research Program of China (973 Program) [2010CB934502]
- SUN-WIN joint project
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A simple hydrothermal method was employed to synthesize AgFeO2 nanoparticles, which were utilized as substrates in SERS detection of Rhodamine 6G and 4-mercaptobenzoic acid. The magnetic properties of the products provided the capability of concentrating analyte molecules under an external magnetic field. The detection in aqueous solution has ensured the uniformity of the SERS signals and the reproducibility of the substrates. It was interesting that the substrates exhibited high SERS activity at Rhodamine 6G concentration of 1 x 10(-7) M with an enhancement factor of 5.1 x 10(5), showing the highest SERS effect for semiconductor substrates, which might be ascribed to the orderly orientation of AgFeO2 nanoparticles under external magnetic field.
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