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Vertically aligned Ag nanoplate-assembled film as a sensitive and reproducible SERS substrate for the detection of PCB-77.
J Hazard Mater. 2012 Apr 15; 211-212:389-95.JH

Abstract

Vertically aligned Ag nanoplate-assembled film has been achieved by spin-coating Ag seeds on an ITO substrate and subsequent electrodeposition in a mixed aqueous solution of AgNO(3) and citric acid. As sufficient hot spots are located in the deep gaps between the neighboring nanoplates across the whole substrate, the Ag nanoplate-assembled film shows strong Surface enhanced Raman scattering (SERS) effect, together with good signal reproducibility. Therefore, the Ag nanoplate-assembled films were tried as robust, highly sensitive and reproducible SERS substrates for the rapid detection of 3,3',4,4'-tetrachlorobiphenyl (PCB-77) and a detection limit of about 10(-6)M was reached. For further reducing the detection limit, a layer of decanethiol was modified on the Ag nanoplate surface to capture the PCB-77 molecules efficiently, and a lower detection limit of 10(-7)M was achieved. A linear dependence was found between the logarithmic concentrations of PCB-77 and the intensities of the fingerprint peaks. Furthermore, the Ag nanoplate-assembled film can also be used as a SERS substrate to distinguish characteristic peaks of different polychlorinated biphenyls (PCBs) in their mixed solutions. Therefore the vertically aligned Ag nanoplate-assembled film has potentials as effective SERS substrates in rapid and direct detection of trace PCBs.

Authors+Show Affiliations

Key Laboratory of Materials Physics, and Anhui Key Laboratory of Nanomaterials and Nanostructures, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei 230031, China.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

21871725

Citation

Zhu, Chuhong, et al. "Vertically Aligned Ag Nanoplate-assembled Film as a Sensitive and Reproducible SERS Substrate for the Detection of PCB-77." Journal of Hazardous Materials, vol. 211-212, 2012, pp. 389-95.
Zhu C, Meng G, Huang Q, et al. Vertically aligned Ag nanoplate-assembled film as a sensitive and reproducible SERS substrate for the detection of PCB-77. J Hazard Mater. 2012;211-212:389-95.
Zhu, C., Meng, G., Huang, Q., & Huang, Z. (2012). Vertically aligned Ag nanoplate-assembled film as a sensitive and reproducible SERS substrate for the detection of PCB-77. Journal of Hazardous Materials, 211-212, 389-95. https://doi.org/10.1016/j.jhazmat.2011.07.118
Zhu C, et al. Vertically Aligned Ag Nanoplate-assembled Film as a Sensitive and Reproducible SERS Substrate for the Detection of PCB-77. J Hazard Mater. 2012 Apr 15;211-212:389-95. PubMed PMID: 21871725.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Vertically aligned Ag nanoplate-assembled film as a sensitive and reproducible SERS substrate for the detection of PCB-77. AU - Zhu,Chuhong, AU - Meng,Guowen, AU - Huang,Qing, AU - Huang,Zhulin, Y1 - 2011/08/10/ PY - 2011/03/25/received PY - 2011/06/21/revised PY - 2011/07/27/accepted PY - 2011/8/30/entrez PY - 2011/8/30/pubmed PY - 2012/7/4/medline SP - 389 EP - 95 JF - Journal of hazardous materials JO - J Hazard Mater VL - 211-212 N2 - Vertically aligned Ag nanoplate-assembled film has been achieved by spin-coating Ag seeds on an ITO substrate and subsequent electrodeposition in a mixed aqueous solution of AgNO(3) and citric acid. As sufficient hot spots are located in the deep gaps between the neighboring nanoplates across the whole substrate, the Ag nanoplate-assembled film shows strong Surface enhanced Raman scattering (SERS) effect, together with good signal reproducibility. Therefore, the Ag nanoplate-assembled films were tried as robust, highly sensitive and reproducible SERS substrates for the rapid detection of 3,3',4,4'-tetrachlorobiphenyl (PCB-77) and a detection limit of about 10(-6)M was reached. For further reducing the detection limit, a layer of decanethiol was modified on the Ag nanoplate surface to capture the PCB-77 molecules efficiently, and a lower detection limit of 10(-7)M was achieved. A linear dependence was found between the logarithmic concentrations of PCB-77 and the intensities of the fingerprint peaks. Furthermore, the Ag nanoplate-assembled film can also be used as a SERS substrate to distinguish characteristic peaks of different polychlorinated biphenyls (PCBs) in their mixed solutions. Therefore the vertically aligned Ag nanoplate-assembled film has potentials as effective SERS substrates in rapid and direct detection of trace PCBs. SN - 1873-3336 UR - https://www.unboundmedicine.com/medline/citation/21871725/Vertically_aligned_Ag_nanoplate_assembled_film_as_a_sensitive_and_reproducible_SERS_substrate_for_the_detection_of_PCB_77_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0304-3894(11)00999-X DB - PRIME DP - Unbound Medicine ER -