Green synthesis of gold nanoparticles using fungus Mariannaea sp HJ and their catalysis in reduction of 4-nitrophenol
文献类型：期刊论文
| 作者 | Qu, Yuanyuan; Pei, Xiaofang; Shen, Wenli; Li, Huijie; Zhang, Xuwang; Li, Shuzhen; Zhang, Zhaojing; Li, Xuanying |
| 刊名 | ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
 |
| 出版日期 | 2017-09-01 |
| 卷号 | 24期号:27页码:21649-21659 |
| 关键词 | Gold Nanoparticles Biosynthesis Mariannaea Sp. 4-nitrophenol Catalytic Activity |
| 英文摘要 | In the present study, biosynthesis of gold nanoparticles (AuNPs) by the cells (cells-AuNPs) and cell-free extracts (extracts-AuNPs) of a new fungus Mariannaea sp. HJ was reported. The as-synthesized particles were characterized by UV-vis spectroscopy, transmission electron microscopy (TEM), X-ray diffraction (XRD), and Fourier transform infrared spectroscopy (FTIR). The effects of different parameters on AuNP biosynthesis were investigated, and initial gold ion concentration of 2 mM, pH 7, was demonstrated to be suitable for both cells-AuNP and extracts-AuNP syntheses. The cells-AuNPs were of various shapes, including sphere, hexagon, and irregular shapes, with an average size of 37.4 nm, while the extracts-AuNPs were almost spherical and pseudo-spherical with an average size of 11.7 nm. XRD pattern suggested that the crystal structure of both AuNPs was face-centered cubic. FTIR spectra implied that some biomolecules from the fungal cell walls or cell-free extracts were involved in the formation of AuNPs. The as-synthesized AuNPs were demonstrated to have excellent catalytic activities for the reduction of 4-nitrophenol with the catalytic rate constants of 5.7 x 10(-3)/s for cells-AuNPs and 24.7 x 10(-3)/s for extracts-AuNPs. To the best of our knowledge, this is the first report on AuNP biosynthesis by Mariannaea sp. |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/39636]  |
| 专题 | 生态环境研究中心_中国科学院环境生物技术重点实验室 |
| 推荐引用方式 GB/T 7714 | Qu, Yuanyuan,Pei, Xiaofang,Shen, Wenli,et al. Green synthesis of gold nanoparticles using fungus Mariannaea sp HJ and their catalysis in reduction of 4-nitrophenol[J]. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH,2017,24(27):21649-21659. |
| APA | Qu, Yuanyuan.,Pei, Xiaofang.,Shen, Wenli.,Li, Huijie.,Zhang, Xuwang.,...&Li, Xuanying.(2017).Green synthesis of gold nanoparticles using fungus Mariannaea sp HJ and their catalysis in reduction of 4-nitrophenol.ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH,24(27),21649-21659. |
| MLA | Qu, Yuanyuan,et al."Green synthesis of gold nanoparticles using fungus Mariannaea sp HJ and their catalysis in reduction of 4-nitrophenol".ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH 24.27(2017):21649-21659. |
入库方式： OAI收割
来源：生态环境研究中心
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