Biosynthesis of au nanoparticles by a marine bacterium and enhancing their catalytic activity through metal ions and metal oxides

doi:10.1002/btpr.2727

CORC > 烟台海岸带研究所 > 中国科学院烟台海岸带研究所 > 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利用所重点实验室

	Biosynthesis of au nanoparticles by a marine bacterium and enhancing their catalytic activity through metal ions and metal oxides
	Zhang, HK ; Hu, XK
刊名	BIOTECHNOLOGY PROGRESS
	2019
卷号	35 期号:2 页码:UNSP e2727
关键词	biosynthesis marine bacterium catalytic reduction metal ions metal oxides
ISSN号	8756-7938
DOI	10.1002/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
文献子类	Article
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.
WOS关键词	GOLD NANOPARTICLES ; EXTRACELLULAR BIOSYNTHESIS ; MICROBIAL REDUCTION ; ELECTRON-TRANSFER ; HUMIC-ACID ; PD ; PERFORMANCE ; SUBSTANCES ; ADSORPTION ; MECHANISM
WOS研究方向	Biotechnology & Applied Microbiology ; Food Science & Technology
语种	英语
WOS记录号	WOS:000467996300001
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]
内容类型	期刊论文
源URL	[http://ir.yic.ac.cn/handle/133337/24980]
专题	烟台海岸带研究所_海岸带生物学与生物资源利用所重点实验室
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 7714	Zhang, 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.
APA	Zhang, 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.
MLA	Zhang, 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.