| 학회 |
한국공업화학회 |
| 학술대회 |
2018년 봄 (05/02 ~ 05/04, 대구 엑스코(EXCO)) |
| 권호 |
22권 1호 |
| 발표분야 |
정밀화학_포스터 |
| 제목 |
Ag nanoparticles onto thin silica coating of graphene oxide for SERS substrate |
| 초록 |
Ag nanoparticles onto thin silica coating of graphene oxide for SERS substrate was prepared and used an as a surface-enhanced Raman scattering (SERS) substrate. Graphene oxide was coated with silica layer on their surface by using physical absorption of sodium silicate as a binder combine with sol-gel process of of 3-mercaptopropyl trimethoxysilane. The thickness of silica is ~6 nm. Ag NPs were embedded on the silica-coated graphene oxide by the reduction of Ag+ by octylamine in the presence of ethylene glycol to prepare GO@SiO2@Ag. The Raman signal of GO@SiO2@Ag was 1.8-fold as strong as than that of GO without a silica coating. For application, the GO@SiO2@Ag was applied to detect 4-mercaptobenzoic acid (4-MBA). The limit of detection of 4-MBA was 0.74 μM, indicating that the GO@SiO2@Ag can be utilized as a highly sensitive SERS substrate for detection of trace amounts of chemicals in various fields. |
| 저자 |
하유나, 함은일, 강은지, 김태용, 김형모, 전봉현
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| 소속 |
건국대 |
| 키워드 |
Ag nanoparticle; Surface-enhanced Raman scattering; Graphene oxide; 4-mercaptobenzoic acid
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| E-Mail |
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