Tags

Type your tag names separated by a space and hit enter

β-Cyclodextrin coated SiO₂@Au@Ag core-shell nanoparticles for SERS detection of PCBs.
Phys Chem Chem Phys. 2015 Sep 07; 17(33):21149-57.PC

Abstract

A new type of surface-enhanced Raman scattering (SERS) substrate consisting of β-cyclodextrin (β-CD) coated SiO2@Au@Ag nanoparticles (SiO2@Au@Ag@CD NPs) has been achieved. Our protocol was a simplified approach as the fabrication and modification of the silver shell were realized in a single-step reaction by taking advantage of β-CD as both the reducing and stabilizing agents. The as-synthesized SiO2@Au@Ag@CD NPs were uniform in size and demonstrated high SERS activity and reproducibility. The substrates consisting of the SiO2@Au@Ag@CD NPs were employed for SERS detection of polychlorinated biphenyls (PCBs) including PCB-3, PCB-29 and PCB-77. The SERS detection sensitivity was significantly improved due to enrichment of more PCB molecules captured by β-CD on the substrate surface, as confirmed by the appearance of the new Raman bands which are attributed to the complexes between β-CD and PCBs according to the theoretical simulation. Therefore, this work presents a novel approach to the fabrication of effective SERS substrates that can be employed for rapid determination of trace amounts of PCBs in the environment with high detection sensitivity and recognition selectivity.

Authors+Show Affiliations

Key Laboratory of Ion Beam Bioengineering, Institute of Technical Biology and Agriculture Engineering, Hefei Institutes of Physical Science, Chinese Academy of Sciences and Anhui Province, China. huangq@ipp.ac.cn.No affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

25478906

Citation

Lu, Yilin, et al. "Β-Cyclodextrin Coated SiO₂@Au@Ag Core-shell Nanoparticles for SERS Detection of PCBs." Physical Chemistry Chemical Physics : PCCP, vol. 17, no. 33, 2015, pp. 21149-57.
Lu Y, Yao G, Sun K, et al. Β-Cyclodextrin coated SiO₂@Au@Ag core-shell nanoparticles for SERS detection of PCBs. Phys Chem Chem Phys. 2015;17(33):21149-57.
Lu, Y., Yao, G., Sun, K., & Huang, Q. (2015). Β-Cyclodextrin coated SiO₂@Au@Ag core-shell nanoparticles for SERS detection of PCBs. Physical Chemistry Chemical Physics : PCCP, 17(33), 21149-57. https://doi.org/10.1039/c4cp04904g
Lu Y, et al. Β-Cyclodextrin Coated SiO₂@Au@Ag Core-shell Nanoparticles for SERS Detection of PCBs. Phys Chem Chem Phys. 2015 Sep 7;17(33):21149-57. PubMed PMID: 25478906.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - β-Cyclodextrin coated SiO₂@Au@Ag core-shell nanoparticles for SERS detection of PCBs. AU - Lu,Yilin, AU - Yao,Guohua, AU - Sun,Kexi, AU - Huang,Qing, Y1 - 2014/12/05/ PY - 2014/12/6/entrez PY - 2014/12/6/pubmed PY - 2016/5/10/medline SP - 21149 EP - 57 JF - Physical chemistry chemical physics : PCCP JO - Phys Chem Chem Phys VL - 17 IS - 33 N2 - A new type of surface-enhanced Raman scattering (SERS) substrate consisting of β-cyclodextrin (β-CD) coated SiO2@Au@Ag nanoparticles (SiO2@Au@Ag@CD NPs) has been achieved. Our protocol was a simplified approach as the fabrication and modification of the silver shell were realized in a single-step reaction by taking advantage of β-CD as both the reducing and stabilizing agents. The as-synthesized SiO2@Au@Ag@CD NPs were uniform in size and demonstrated high SERS activity and reproducibility. The substrates consisting of the SiO2@Au@Ag@CD NPs were employed for SERS detection of polychlorinated biphenyls (PCBs) including PCB-3, PCB-29 and PCB-77. The SERS detection sensitivity was significantly improved due to enrichment of more PCB molecules captured by β-CD on the substrate surface, as confirmed by the appearance of the new Raman bands which are attributed to the complexes between β-CD and PCBs according to the theoretical simulation. Therefore, this work presents a novel approach to the fabrication of effective SERS substrates that can be employed for rapid determination of trace amounts of PCBs in the environment with high detection sensitivity and recognition selectivity. SN - 1463-9084 UR - https://www.unboundmedicine.com/medline/citation/25478906/β_Cyclodextrin_coated_SiO₂@Au@Ag_core_shell_nanoparticles_for_SERS_detection_of_PCBs_ L2 - https://doi.org/10.1039/c4cp04904g DB - PRIME DP - Unbound Medicine ER -