High-performance surface-enhanced Raman scattering sensors based on Ag nanoparticles-coated Si nanowire arrays for quantitative detection of pesticides

Wang, X. T.; Shi, W. S.; She, G. W.; Mu, L. X.; Lee, S. T.
February 2010
Applied Physics Letters;2/1/2010, Vol. 96 Issue 5, p053104
Academic Journal
A surface-enhanced Raman scattering (SERS) sensor made of Ag nanoparticles-coated Si nanowire (SiNW) arrays was fabricated for the quantitative detection of Carbaryl (an important nitrogen pesticide). H-terminated SiNWs were capable of reducing silver ions, leading to uniform deposition of silver nanoparticles on SiNW arrays. Such wire arrays exhibited a superior detection sensitivity of 10-17 M Rodamine 6G with high reproducibility. The sensor also enabled high sensitivity, reproducibility, and stability detection of Carbaryl. Significantly, the linear relation between the logarithmic concentrations and Raman peak intensities provided quantitative detection of Carbaryl.


Related Articles

  • Tyrosinase inhibition organic phase biosensor for triazinic and benzotriazinic pesticide analysis (part two). Campanella, L.; Dragone, R.; Lelo, D.; Martini, E.; Tomassetti, M. // Analytical & Bioanalytical Chemistry;Feb2006, Vol. 384 Issue 4, p915 

    Several triazine pesticides, such as atrazine, are much more soluble in several organic solvents, such as chloroform, than in water. Our recent research was aimed at analyzing this class of pesticides using tyrosinase OPEE (organic phase enzyme electrodes), exploiting their inhibiting action on...

  • Broad Raman scattering and luminescence in β-carotene solution. Nakamura, R.; Yamamoto, S.; Nakahara, J. // Journal of Chemical Physics;7/1/2002, Vol. 117 Issue 1, p238 

    Resonant secondary radiation spectra of dilute β-carotene solution (10[sup -4]-10[sup -5] M) are measured under stationary excitation. The excitation energy is varied within 0-0 and 0-1 transition energies in the S[sub 2]-S[sub 0] transition of β-carotene. When the excitation energy is...

  • Occurrence of Three Pesticides in Community Water Supplies, Kenya. Mwanthi, M. A. // Bulletin of Environmental Contamination & Toxicology;Apr98, Vol. 60 Issue 4, p601 

    The article presents a study that investigates the type of pesticides which were being used and the extent to which DDT (Dichloro-Diphenyl-Trichloroethane), carbofuran and carbaryl pesticides contaminated the drinking water sources in Kiaria sublocation, Githunguri location of Kenya. On the 72...

  • Potential Identification Problems with Carbaryl Doose, G. M.; Cairns, T.; Siegmund, E. G. // Bulletin of Environmental Contamination & Toxicology;Jan1983, Vol. 30 Issue 1, p93 

    No abstract available.

  • Dependence of ion pairing and solvation on solution temperature: Evidence from DMSO solution and matrix-solvation spectra. Wooldridge, Robert; Fisher, Mark; Ritzhaupt, Gary; Devlin, J. Paul // Journal of Chemical Physics;4/15/1987, Vol. 86 Issue 8, p4391 

    Infrared and Raman Spectra for alkali-metal nitrate solutions in dimethylsulfoxide (DMSO) have been measured as a function of concentration (0.5 to 2.0 M) and temperature (298 to 400 K) to determine the influence of temperature on structural changes that favor the incorporation of the nitrate...

  • Comparison of experiment and theory for the resonance Raman spectrum of I2 in solution. IV. Band shapes and hot bands. Sension, Roseanne J.; Strauss, Herbert L. // Journal of Chemical Physics;2/15/1988, Vol. 88 Issue 4, p2289 

    Each observed Raman transition of I2 in solution is made up of an overlapping series consisting of the fundamental, or an overtone, and its associated hot bands. As the excitation frequency is changed, these various components change their relative intensities, making it appear that the Raman...

  • Low-frequency Raman scattering of aqueous solutions of L-xyloascorbic acid and D-araboascorbic acid. Wang, Yan; Tominaga, Yasunori // Journal of Chemical Physics;1/1/1996, Vol. 104 Issue 1, p1 

    Depolarized low-frequency Raman spectra of aqueous solutions of L-xyloascorbic acid and its epimer D-araboascorbic acid have been investigated as a function of concentration at 30 °C. The influence of fluorescence in the low-frequency Raman spectral intensity of D-araboascorbic acid aqueous...

  • Resonance Raman intensity analysis of a dicyanovinyl-azaadamantane: Mode-specific reorganization.... Lilichenko, Mark; Tittelbach-Helmrich, Dietrich // Journal of Chemical Physics;12/22/1998, Vol. 109 Issue 24, p10958 

    Presents the resonance Raman intensity analysis of the molecule dicyanovinyl-azaadamantane in acetonitrile solution. Factors attributing to changes in molecular structure upon charge-transfer (CT) excitation; Details on the CT transition of donor-acceptor (DA) molecules; Comparison between...

  • Effect of Carbaryl on Tissue Composition, Maturation, and Breeding Potential of Cirrhina mrigala (Ham.). Kaur, K.; Dhawan, A. // Bulletin of Environmental Contamination & Toxicology;Sep96, Vol. 57 Issue 3, p480 

    The article investigates the effect of carbaryl on tissue composition, maturation, and breeding potential of Cirrhina mrigala by researchers from Ludhiana, India. Carbaryl is one of the most commonly employed insecticides for controlling the pests of cotton, tobacco, paddy and number of other...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics