Highly efficient silver particle layers on glass substrate synthesized by the sonochemical method for surface enhanced Raman spectroscopy purposes |
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| Institution: | 1. Regional Centre of Advanced Technologies and Materials, Department of Physical Chemistry, Faculty of Science, Palacký University, Šlechtitelů 27, 783 71 Olomouc, Czech Republic;2. Department of Chemistry, Bar-Ilan University, Ramat-Gan 52900, Israel;1. Coal Chemistry Division, CSIR-North East Institute of Science & Technology, Jorhat 785006, India;2. Laboratory of Environmental Researches and Nanotechnology Development, Centro Universitário La Salle, Mestrado em Avaliação de Impactos Ambientais em Mineração, Victor Barreto, 2288 Centro, 92010-000 Canoas, RS, Brazil;1. Department of Physics, University of Kashan, Kashan, Iran;2. Department of Nanotechnology, University of Kashan, Kashan, Iran;3. Young Researchers and Elite Club, South Tehran Branch, Islamic Azad University, Tehran, Iran;1. Laboratório de Nanoestruturas Plasmônicas, Núcleo de Espectroscopia e Estrutura Molecular, Departamento de Química, Universidade Federal de Juiz de Fora, R. José Lourenço Kelmer s/n, Martelos, CEP 36036-900, Juiz de Fora, MG, Brazil;2. Departamento de Física, Universidade Federal de Juiz de Fora, R. José Lourenço Kelmer s/n, Martelos, CEP 36036-900, Juiz de Fora, MG, Brazil;1. Department of Chemistry and Biochemistry, National Chung Cheng University, Chiayi 62102, Taiwan;2. Center for Nano Bio-Detection (AIM-HI), National Chung Cheng University, Chiayi 62102, Taiwan;1. Department of Chemistry, University of Delhi, Delhi, Delhi 110007, India;2. Department of Chemistry, Purdue University, 560 Oval Drive, West Lafayette, IN 47906, USA |
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| Abstract: | A fast method for preparing of silver particle layers on glass substrates with high application potential for using in surface enhanced Raman spectroscopy (SERS) is introduced. Silver particle layers deposited on glass cover slips were generated in one-step process by reduction of silver nitrate using several reducing agents (ethylene glycol, glycerol, maltose, lactose and glucose) under ultrasonic irradiation. This technique allows the formation of homogeneous layers of silver particles with sizes from 80 nm up to several hundred nanometers depending on the nature of the used reducing agent. Additionally, the presented method is not susceptible to impurities on the substrate surface and it does not need any additives to capture or stabilize the silver particles on the glass surface. The characteristics of prepared silver layers on glass substrate by the above mentioned sonochemical approach was compared with chemically prepared ones. The prepared layers were tested as substrates for SERS using adenine as a model analyte. The factor of Raman signal enhancement reached up to 5·105. On the contrary, the chemically prepared silver layers does not exhibit almost any pronounced Raman signal enhancement. Presented sonochemical approach for preparation of silver particle layers is fast, simple, robust, and is better suited for reproducible fabrication functional SERS substrates than chemical one. |
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| Keywords: | Silver particles layer Glass substrate Sonochemical Surface enhanced Raman spectroscopy |
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