Biosynthesis of au nanoparticles by a marine bacterium and enhancing their catalytic activity through metal ions and metal oxides
Zhang, HK; Hu, XK
发表期刊BIOTECHNOLOGY PROGRESS
ISSN8756-7938
2019
卷号35期号:2页码:UNSP e2727
关键词biosynthesismarine bacteriumcatalytic reductionmetal ionsmetal oxides
研究领域Biotechnology & Applied Microbiology; Food Science & Technology
DOI10.1002/btpr.2727
产权排序[Zhang, Haikun; Hu, Xiaoke] Chinese Acad Sci, Yantai Inst Costal Zone Res, Yantai 264000, Peoples R China; [Zhang, Haikun; Hu, Xiaoke] Qingdao Natl Lab Marine Sci & Technol, Lab Marine Biol & Biotechnol, Qingdao, Shandong, Peoples R China
通讯作者Hu, Xiaoke(xkhucas@163.com)
作者部门海岸带生物学与生物资源保护实验室
英文摘要The authors report that a marine Shewanella sp. CNZ-1 is capable of producing Au NPs under various conditions. Results showed that initial concentration of Au(III), pH values and electron donors affected nucleation of Au NPs by CNZ-1, resulting in different apparent color of the as-obtained bio-Au NPs, which were further characterized by UV-Vis, TEM, XRD, and XPS analyses. Mechanism studies revealed that Au(III) was first reduced to Au(I) and eventually reduced to EPS-coated Au-0 NPs. FTIR and FEEM analyses revealed that some amides and humic acid-like matters were involved in the production of bio-Au NPs through CNZ-1 cells. In addition, the authors also found that the catalytic activity of bio-Au NPs for 4-nitrophenol (4-NP) reduction could be enhanced by various metal ions (Ca2+, Cu2+, Co2+, Fe2+, Fe3+, Ni2+, Sr2+, and Cr3+) and metal oxides (Fe3O4, Al2O3, and SiO2), which is beneficial for their further practical application. The maximum zero-order rate constant k(1) and first-order rate constant k(2) of all metal ions/oxides supplemented systems can reach 99.65mg/(L(.)min) and 2.419min(-1), which are 11.3- and 12.6-fold higher than that of control systems, respectively. (c) 2018 American Institute of Chemical Engineers Biotechnol. Prog., 35: e2727, 2019.
文章类型Article
资助机构key research and development project of Yantai, Shandong province [Y733091011]; National Natural Science foundation of ChinaNational Natural Science Foundation of China [51608519]; National Natural Science foundation of Shandong Province, China [ZR2016EEB10]; technological service network plan of Chinese Academy of sciences (STS) [ZSYS-006]; Key Laboratory of Industrial Ecology and Environmental Engineering, China Ministry of EducationMinistry of Education, China [KLIEE-16-06]
收录类别SCI
语种英语
关键词[WOS]GOLD NANOPARTICLES; EXTRACELLULAR BIOSYNTHESIS; MICROBIAL REDUCTION; ELECTRON-TRANSFER; HUMIC-ACID; PD; PERFORMANCE; SUBSTANCES; ADSORPTION; MECHANISM
研究领域[WOS]Biotechnology & Applied Microbiology; Food Science & Technology
WOS记录号WOS:000467996300001
引用统计被引频次：2[WOS][WOS记录][WOS相关记录]
文献类型期刊论文
条目标识符http://ir.yic.ac.cnhttp://ir.yic.ac.cn/handle/133337/24980
专题海岸带生物学与生物资源利用重点实验室_海岸带生物学与生物资源保护实验室

作者单位1.Chinese Acad Sci, Yantai Inst Costal Zone Res, Yantai 264000, Peoples R China;
2.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Biol & Biotechnol, Qingdao, Shandong, Peoples R China

推荐引用方式
GB/T 7714Zhang, HK,Hu, XK. Biosynthesis of au nanoparticles by a marine bacterium and enhancing their catalytic activity through metal ions and metal oxides[J]. BIOTECHNOLOGY PROGRESS,2019,35(2):UNSP e2727.
APAZhang, HK,&Hu, XK.(2019).Biosynthesis of au nanoparticles by a marine bacterium and enhancing their catalytic activity through metal ions and metal oxides.BIOTECHNOLOGY PROGRESS,35(2),UNSP e2727.
MLAZhang, HK,et al."Biosynthesis of au nanoparticles by a marine bacterium and enhancing their catalytic activity through metal ions and metal oxides".BIOTECHNOLOGY PROGRESS 35.2(2019):UNSP e2727.


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