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Title

A hybrid silver-magnetite detector based on surface enhanced Raman scattering for differentiating organic compounds

AuthorsCaro, Carlos; Sayagués, María Jesús ; Franco, V. ; Conde, A. ; Zaderenko, Paula; Gámez, Francisco
KeywordsMagnetite nanoparticles
SERS detection
Silver nanoparticles
Nanoparticles characterization
Issue Date2-Jun-2016
PublisherElsevier
CitationSensors and Actuators - B - Chemical Biochemical Sensors 228: 124-133 (2016)
AbstractIn this work a cheap detector of organic molecules is developed. It comprises a cellulose fiber doped with a mixture of magnetite and reduced silver nanoparticles, the latter ones synthesized anew. The nanoparticles and the fiber were characterized with well-established spectroscopic, microscopic and magnetic techniques, namely infrared, UV-vis spectroscopies, vibrating sample magnetometry and electronic microscopies. The so-obtained doped-fibers were tested as surface enhanced Raman spectroscopy detector in aqueous samples with a diluted mixture of two pollutant models (rhodamine 6G and picric acid), being able to differentiate between both organic compounds. Hence, the nanoparticle-impregnated fiber is proposed as a reliable preliminary qualitative and semiquantitative test of the presence of specific organic molecules in solutions. Moreover, the magnetite nanoparticles provide the detector with a saturation magnetization value that enables the separation of the fiber from the solution with the aid of a commercial magnet.
Publisher version (URL)https://doi.org/10.1016/j.snb.2016.01.003
URIhttp://hdl.handle.net/10261/191102
DOI10.1016/j.snb.2016.01.003
ISSN0925-4005
Appears in Collections:(ICMS) Artículos
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