Cuttlebone-derived organic matrix as a scaffold for assembly of silver nanoparticles and application of the composite films in surface-enhanced Raman scattering |
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Authors: | Xueping Jia Weiping Qian Dajian Wu Dongwei Wei Guilan Xu Xiaojun Liu |
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Institution: | aState Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing 210096, PR China;bSchool of Chemistry and Chemical Engineering, Nantong University, Nantong 226007, PR China;cAcoustics Institute, Nanjing University, Nanjing 210093, PR China |
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Abstract: | Biologically derived materials provide a rich variety of approaches toward new functional materials because of their fascinating structures and environment-friendly features, which is currently a topic of research interest. In this paper, we show that the cuttlebone-derived organic matrix (CDOM) is an excellent scaffold for the one-step synthesis and assembly of silver nanoparticles (AgNPs), which can be further used as substrate for surface-enhanced Raman scattering (SERS). Formation of AgNPs–CDOM composite was accomplished by the reaction of CDOM with AgNO3 and NH3·H2O solution at 80 °C without using any other stabilizer and reducing agents. UV–vis spectra and TEM were utilized to characterize the AgNPs and investigate their formation process. Results demonstrate that the size and distribution of AgNPs can be partly regulated by changing incubation time; the concentration of NH3·H2O is critical to the formation rate of AgNPs. As a proof of principle, we show that the AgNPs–CDOM composite can be employed in trace analysis using SERS. |
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Keywords: | Silver nanoparticles Cuttlebone-derived organic matrix Composite Surface-enhanced Raman scattering |
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