Biosynthesis of gold nanoparticles using cell-free extracts of Magnusiomyces ingens LH-F1 for nitrophenols reduction
文献类型：期刊论文
| 作者 | Shen, Wenli; Zhang, Zhaojing; Qu, Yuanyuan; Zhang, Xuwang; Li, Zhichao; You, Shengnan; Pei, Xiaofang; Li, Shuzhen |
| 刊名 | BIOPROCESS AND BIOSYSTEMS ENGINEERING
 |
| 出版日期 | 2018-03-01 |
| 卷号 | 41期号:3页码:359-367 |
| ISSN号 | 1615-7591 |
| 关键词 | Gold nanoparticles Cell-free extract Magnusiomyces ingens Biosynthesis Catalysis |
| 文献子类 | Article |
| 英文摘要 | A green and eco-friendly method for the synthesis of gold nanoparticles (AuNPs) was developed using the cell-free extracts of a yeast strain Magnusiomyces ingens LH-F1. UV-vis spectra showed a distinct absorption band at similar to 540 nm, corresponding to the surface plasmon resonance of AuNPs. Transmission electron microscopy images revealed that the shapes of AuNPs were almost spherical and pseudo-spherical. Fourier transform infrared spectroscopy and sodium dodecyl sulfate-polyacrylamide gel electrophoresis analyses suggested that some proteins containing amino- and carboxyl-groups in the cell-free extracts were absorbed on the surface of nanoparticles, which could act as reducing and capping agents for AuNPs synthesis. Furthermore, with the concentration of cell-free extracts increasing from 25 to 200 mg L-1, the average size of AuNPs decreased from 28.3 to 20.3 nm. Meanwhile, the morphology became more uniform with less irregular shapes. In addition, the as-synthesized AuNPs showed an excellent catalytic activity for nitrophenols reduction (i.e., 4-nitrophenol, 3-nitrophenol and 2-nitrophenol) in the presence of excess NaBH4. The catalytic rate constant of nitrophenols reduction was also dependent on cell-free extract concentration. The larger AuNPs synthesized by less cell-free extracts were covered with a thinner corona and showed better capacity for reducing nitrophenols. This study suggested that the as-synthesized AuNPs could be employed as efficient catalysts in reduction of organic contaminants. |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/41240]  |
| 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 | Shen, Wenli,Zhang, Zhaojing,Qu, Yuanyuan,et al. Biosynthesis of gold nanoparticles using cell-free extracts of Magnusiomyces ingens LH-F1 for nitrophenols reduction[J]. BIOPROCESS AND BIOSYSTEMS ENGINEERING,2018,41(3):359-367. |
| APA | Shen, Wenli.,Zhang, Zhaojing.,Qu, Yuanyuan.,Zhang, Xuwang.,Li, Zhichao.,...&Li, Shuzhen.(2018).Biosynthesis of gold nanoparticles using cell-free extracts of Magnusiomyces ingens LH-F1 for nitrophenols reduction.BIOPROCESS AND BIOSYSTEMS ENGINEERING,41(3),359-367. |
| MLA | Shen, Wenli,et al."Biosynthesis of gold nanoparticles using cell-free extracts of Magnusiomyces ingens LH-F1 for nitrophenols reduction".BIOPROCESS AND BIOSYSTEMS ENGINEERING 41.3(2018):359-367. |
入库方式： OAI收割
来源：生态环境研究中心
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