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    題名: Synthesis of Silver Nanoparticles using Surfactin: A Biosurfactant as Stabilizing Agent
    Authors: 陳建成
    Chien-Cheng Chen;A. Satyanarayana Reddy;Chien-Yen Chen;Simon C. Baker;Jiin-Shuh Jean;Cheng-Wei Fan;Hau-Ren Chen;Jung-Chen Wang
    貢獻者: 生物科技系
    Keywords: Biosurfactant;Surfactin;Nanomaterials;Electron microscopy;Biodegradable
    Date: 2009-06-15
    Issue Date: 2010-11-11 16:57:04 (UTC+8)
    Abstract: Surfactin, a lipopeptide biosurfactant, was used to stabilize the formation of silver nanoparticles. Synthesis of silver nanoparticles using a borohydrate reduction was performed at three pH levels (pH 5, 7 and 9) and two different temperatures in the presence of surfactin. The nanomaterials were characterized by UV–vis spectroscopy, X-ray diffraction and transmission electron microscopy. The nanoparticles were synthesized at different pH conditions and temperature and remained stable for 2 months. The UV–vis spectra showed a surface plasmon resonance vibration band at 428 nm for all samples. TEM micrographs revealed that the mean nanoparticle size decreased with increase of pH from 5 to 9 (i.e. 17.8 ± 9.8, 6.9 ± 1.5 and 4.3 ± 1.1 nm) at 4 °C. However, at room temperature, size increased with pH (4.9 ± 1.4, 6.5 ± 1.6, 9.7 ± 4.3 nm at pH 5, 7 and 9 respectively). This report describes the use of a renewable, environmentally compatible, biodegradable surfactant as a stabilizing agent for the synthesis of silver nanoparticles.
    關聯: Materials Letters / Volume 63, Issue 15, Pages 1227–1230
    Appears in Collections:[生物科技學系] 期刊論文
    [生科系] 陳建成

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