Biosynthesis of size-controlled gold nanoparticles using fungus, Penicillium sp.
Biosynthesis of size-controlled gold nanoparticles using fungus, Penicillium sp.
复制标题
DOI：
10.1166/jnn.2009.1287
复制
发表时间：
2009-10
影响因子：
--
通讯作者：
Xiaorong Zhang;Xiaoxiao He;Kemin Wang;Yonghong Wang;Huimin Li;W. Tan
中科院分区：
文献类型：
--
作者：
Xiaorong Zhang;Xiaoxiao He;Kemin Wang;Yonghong Wang;Huimin Li;W. Tan
The unique optoelectronic and physicochemical properties of gold nanoparticles are significantly dependent on the particle size, shape and structure. In this paper, biosynthesis of size-controlled gold nanoparticles using fungus Penicillium sp. is reported. Fungus Penicillium sp. could successfully bioreduce and nucleate AuCl4(-) ions, and lead to the assembly and formation of intracellular Au nanoparticles with spherical morphology and good monodispersity after exposure to HAuCl4 solution. Reaction temperature, as an important physiological parameter for fungus Penicillium sp. growth, could significantly control the size of the biosynthesized Au nanoparticles. The biological compositions and FTIR spectra analysis of fungus Penicillium sp. exposed to HAuCl4 solution indicated the intracellular reducing sugar played an important role in the occurrence of intracellular reduction of AuCl4(-) ions and the growth of gold nanoparticles. Furthermore, the intracellular gold nanoparticles could be easily separated from the fungal cell lysate by ultrasonication and centrifugation.
