Abstract
In this study, biogenic fabrication of gold nanoparticles (AuNPs), respectively, by Cacumen Platycladi leaf extract and the simulation of its active components were thoroughly investigated. The simulated solution was prepared based on components measurement and Fourier-transform infrared spectroscopy analysis of Cacumen Platycladi leaf extract before and after reaction. Several analytic methods such as UV–Vis spectrophotometry, X-ray diffraction, transmission electron microscopy, and thermogravimetric study were adopted to characterize the AuNPs. The results showed that flavonoid and reducing sugar were the main reductive and protective components in the extract vital in the biosynthesis of the AuNPs. In addition, pH of the reaction solution was proved to be the most significant factor upon the synthesis process. The bioreduction mechanism of chloroaurate ions and the formation mechanism of AuNPs were also discussed. To the best of our knowledge, this is the first report on plausible elucidation of the biosynthetic mechanism through comparative study between a plant extract and its simulated solution.
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Acknowledgments
This study was supported by the key program (No. 21036004) and general program (Nos. 20776120, 20976146, and 30700020) of the National Natural Science Foundation of China, the Natural Science Foundation of Fujian Province of China (Grant Nos. 2010J05032 and 2010J01052), and the Fundamental Research Funds for the Central Universities (No. 2010121051).
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Zhan, G., Huang, J., Lin, L. et al. Synthesis of gold nanoparticles by Cacumen Platycladi leaf extract and its simulated solution: toward the plant-mediated biosynthetic mechanism. J Nanopart Res 13, 4957–4968 (2011). https://doi.org/10.1007/s11051-011-0476-y
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DOI: https://doi.org/10.1007/s11051-011-0476-y