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Plant Extract (Bupleurum Falcatum) As A Green Factory For Biofabrication Of Gold Nanoparticles

You Jeong Lee, Song-Hyun Cha, Kyoung Jin Lee, Yeong Shik Kim, Seonho Cho, Youmie Park

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This work describes a biofabrication process for gold nanoparticles in which the plant extract ( Bupleurum falcatum) is used as a reducing agent to convert gold ions to gold nanoparticles. Biofabricated gold nanoparticles with spherical shapes were observed with an average diameter of 10.5 ± 2.3 nm. The color of the gold nanoparticles was purple, with a surface plasmon resonance peak at 542 nm. The face-centered cubic structure of crystalline gold was confirmed by high-resolution X-ray diffraction patterns. The biofabricated gold nanoparticles demonstrated excellent catalytic activity towards the 4-nitrophenol reduction reaction. The current report suggests that plant extracts are valuable natural sources for the biofabrication of gold nanoparticles with excellent catalytic activities.