2018
DOI: 10.1021/acsomega.8b00023
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Self-Assembly of Au@Ag Nanoparticles on Mussel Shell To Form Large-Scale 3D Supercrystals as Natural SERS Substrates for the Detection of Pathogenic Bacteria

Abstract: Herein, we developed a natural surface-enhanced Raman scattering (SERS) substrate based on size-tunable Au@Ag nanoparticle-coated mussel shell to form large-scale three-dimensional (3D) supercrystals (up to 10 cm2) that exhibit surface-laminated structures and crossed nanoplates and nanochannels. The high content of CaCO3 in the mussel shell results in superior hydrophobicity for analyte enrichment, and the crossed nanoplates and nanochannels provided rich SERS hot spots, which together lead to high sensitivit… Show more

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Cited by 48 publications
(30 citation statements)
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“…Depressive disorder is one of serious diseases plaguing mankind1,2. It is a chronic and recurring disease with considerable morbidity and mortality in general population3.…”
Section: Introductionmentioning
confidence: 99%
“…Depressive disorder is one of serious diseases plaguing mankind1,2. It is a chronic and recurring disease with considerable morbidity and mortality in general population3.…”
Section: Introductionmentioning
confidence: 99%
“…S3A†). In our previous work, we also studied the SERS enhancement of Au@AgNPs with different shell thicknesses, and the results showed that Au@AgNPs with a 5 nm thick shell show the highest SERS enhancement 34. Hence, Au@AgNPs with a 5 nm thick shell were used in the fabrication of the SERS tags.…”
Section: Resultsmentioning
confidence: 99%
“…GO was synthesized using a modified Hummer method from natural graphite,49 while AuNPs, AgNPs, and Au@AgNPs were synthesized in the same way as in our previous report 34…”
Section: Methodsmentioning
confidence: 99%
“…Use of SERS analysis in biological application has increased recently because of its high molecular specificity attributed by the optical properties of SERS active substrates [40,41]. Gold and silver nanoparticles have been largely used as SERS active substrates for studying detection of micro-organisms as well as interaction of concerned biomolecules [42,43].…”
Section: Resultsmentioning
confidence: 99%