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[Preparation and spectroscopic studies of nanosilver/silk-fibroin composite].
Guang Pu Xue Yu Guang Pu Fen Xi. 2008 Sep; 28(9):2126-9.GP

Abstract

The development of reliable, eco-friendly processes for the synthesis of nanomaterials is an important aspect of nanotechnology today. One approach that shows immense potential is based on the in situ synthesis of noble metal nanocolloids using natural biological material such as silk fibroin. In the present paper, the nano-Ag/silk-fibroin colloids were prepared by in situ reducing AgNO3 with silk-fibroin at room temperature without any reducing agent. UV-Vis absorption, atomic force microscopy, fluorescence spectra and resonance scattering spectra were used to study the preparation process and characterization of the nanocomposite. It was found that the formative Ag nanoparticles were attributed to the tyrosine residues in the chains of silk-fibroin that act as reduction agent in the reduction course of AgNO3, and the Ag nanoparticles were uniformly embedded in silk-fibroin colloid, which possess good dispersity and stability and can be kept for a long period. The strength of fluorescence spectra increased after reaction of silk-fibroin with AgNO3 solution, showing that there was a strong chemical adsorption between silver nanoparticles and silk-fibroin, and a stable complex layer was formed in silver nanoparticles. Meanwhile the existence of silver nanoparticles in silk-fibroin was proved by resonance scattering spectra.

Authors+Show Affiliations

Ai SY
College of Chemistry and Materials Science, Shandong Agricultural University, Taian 271018, China. ashy@sdau.edu.cn
Gao JG
No affiliation info available
Zhu LS
No affiliation info available
Ma ZJ
No affiliation info available
Li XC
No affiliation info available

MeSH

FibroinsMetal NanoparticlesMicroscopy, Atomic ForceMolecular ConformationNanocompositesNanofibersSilkSilverSpectrometry, FluorescenceSpectrophotometry, UltravioletSpectrum AnalysisSurface Properties

Pub Type(s)

English Abstract
Journal Article

Language

chi

PubMed ID

19093576

Citation

Ai, Shi-yun, et al. "[Preparation and Spectroscopic Studies of Nanosilver/silk-fibroin Composite]." Guang Pu Xue Yu Guang Pu Fen Xi = Guang Pu, vol. 28, no. 9, 2008, pp. 2126-9.
Ai SY, Gao JG, Zhu LS, et al. [Preparation and spectroscopic studies of nanosilver/silk-fibroin composite]. Guang Pu Xue Yu Guang Pu Fen Xi. 2008;28(9):2126-9.
Ai, S. Y., Gao, J. G., Zhu, L. S., Ma, Z. J., & Li, X. C. (2008). [Preparation and spectroscopic studies of nanosilver/silk-fibroin composite]. Guang Pu Xue Yu Guang Pu Fen Xi = Guang Pu, 28(9), 2126-9.
Ai SY, et al. [Preparation and Spectroscopic Studies of Nanosilver/silk-fibroin Composite]. Guang Pu Xue Yu Guang Pu Fen Xi. 2008;28(9):2126-9. PubMed PMID: 19093576.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - [Preparation and spectroscopic studies of nanosilver/silk-fibroin composite]. AU - Ai,Shi-yun, AU - Gao,Ji-gang, AU - Zhu,Lu-sheng, AU - Ma,Zhi-jun, AU - Li,Xiao-chen, PY - 2008/12/20/entrez PY - 2008/12/20/pubmed PY - 2010/7/16/medline SP - 2126 EP - 9 JF - Guang pu xue yu guang pu fen xi = Guang pu JO - Guang Pu Xue Yu Guang Pu Fen Xi VL - 28 IS - 9 N2 - The development of reliable, eco-friendly processes for the synthesis of nanomaterials is an important aspect of nanotechnology today. One approach that shows immense potential is based on the in situ synthesis of noble metal nanocolloids using natural biological material such as silk fibroin. In the present paper, the nano-Ag/silk-fibroin colloids were prepared by in situ reducing AgNO3 with silk-fibroin at room temperature without any reducing agent. UV-Vis absorption, atomic force microscopy, fluorescence spectra and resonance scattering spectra were used to study the preparation process and characterization of the nanocomposite. It was found that the formative Ag nanoparticles were attributed to the tyrosine residues in the chains of silk-fibroin that act as reduction agent in the reduction course of AgNO3, and the Ag nanoparticles were uniformly embedded in silk-fibroin colloid, which possess good dispersity and stability and can be kept for a long period. The strength of fluorescence spectra increased after reaction of silk-fibroin with AgNO3 solution, showing that there was a strong chemical adsorption between silver nanoparticles and silk-fibroin, and a stable complex layer was formed in silver nanoparticles. Meanwhile the existence of silver nanoparticles in silk-fibroin was proved by resonance scattering spectra. SN - 1000-0593 UR - https://www.unboundmedicine.com/medline/citation/19093576/[Preparation_and_spectroscopic_studies_of_nanosilver/silk_fibroin_composite]_ DB - PRIME DP - Unbound Medicine ER -