Biosynthesis of Silver Nanoparticles by Filamentous Cyanobacteria from a Silver(I) Nitrate Complex

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• 作者：Maggy F. Lengke ; Michael E. Fleet ; Gordon Southam
• 刊名：Langmuir
• 出版年：2007
• 出版时间：February 27, 2007
• 年：2007
• 卷：23
• 期：5
• 页码：2694 - 2699
• 全文大小：880K
• 年卷期：v.23,no.5(February 27, 2007)
• ISSN：1520-5827

文摘

The biosynthesis of silver nanoparticles has been successfully conducted using Plectonema boryanum UTEX 485,a filamentous cyanobacterium, reacted with aqueous AgNO₃ solutions (~560 mg/L Ag) at 25-100 C for up to 28days. The interaction of cyanobacteria with aqueous AgNO₃ promoted the precipitation of spherical silver nanoparticlesand octahedral (111) silver platelets (of up to 200 nm) in solutions. The mechanisms of silver nanoparticles viacyanobacteria could involve metabolic processes from the utilization of nitrate at 25 C and also organics releasedfrom the dead cyanobacteria at 25-100 C.