| 학회 | 한국공업화학회 |
| 학술대회 | 2022년 봄 (05/11 ~ 05/13, 제주국제컨벤션센터(ICC JEJU)) |
| 권호 | 26권 1호 |
| 발표분야 | 포스터-정밀화학 |
| 제목 | Highly Sensitive SERS Probes with silica template structure based on Nanogap Control of Au-Ag Alloys |
| 초록 | Inthis study, we report how to fabricate a robust, reproducible and reliablesurface-enhanced Raman scattering (SERS) probe for high-sensitivity chemicaldetection. As a high-sensitivity SERS probe, SiO2@Au@Agnanoparticles (NPs) were synthesized by introducing Au NP seeds into a silicatemplate and growing Ag as an alloy type on its surface. The SERS activity ofSiO2@Au@Ag NPs is regulated by the AgNO3 concentration,and as the AgNO3 concentration increases, an Ag shell grows on theAu seed surface and a nanogap is formed between the two Ag nanoparticles on theprobe surface. The SERS signal intensity of SiO2@Au@Ag NPs wasdetermined using the Raman chemical 4-aminothiophenol (ATP). Since SiO2@Au@AgNPs have strong SERS signals, they can be applied as high-sensitivity SERSprobes and can be used for quantitative detection of trace chemicals. Inaddition, the excellent Raman signal reproducibility of SiO2@Au@AgNPs to 4-ATP has potential for use in in situ detection. |
| 저자 | 함경민, 김재희, 김윤희, 김우연, 전봉현 |
| 소속 | 건국대 |
| 키워드 | Au-Ag alloy; Silica nanoparticle; Surface-enhanced Raman scattering (SERS); SERS probe; nanogap |
