Rapid production of Pd nanoparticle by a marine electrochemically active bacterium Shewanella sp CNZ-1 and its catalytic performance on 4-nitrophenol reduction
Zhang, Haikun; Hu, Xiaoke; Hu, Xiaoke(Chinese Acad Sci, Yantai Inst Costal Zone Res, Yantai 264000, Peoples R China)
2017
发表期刊RSC ADVANCES
ISSN2046-2069
卷号7期号:65页码:41182-41189
产权排序第1完成单位
摘要Microbial recovery of Pd through Pd(II) reduction is emerging as a clean alternative to traditional physical and chemical reclaiming treatments. Shewanella species are proven to be capable of excellent metal reduction properties and have thus drawn great attention for Pd(II) reduction. So far, however, only Shewanella oneidensis MR-1 has been explored for Pd nanoparticles (Pd-NPs) production. In this study, we report a marine electrochemically active bacterium Shewanella sp. CNZ-1 with the ability for Pd-NPs generation in the presence of sodium lactate as an electron donor. SEM-EDX, TEM, FTIR, XRD and XPS analyses were performed to analyze the Pd(II) reduction process and products. The results showed that Shewanella sp. CNZ-1 was more efficient than Shewanella oneidensis MR-1 in reducing Pd(II) under current conditions. In addition, Pd(II) reduction by CNZ-1 was inhibited by low pH value (3-6) and high concentration of NaCl (3-9%), whereas Pd(II) adsorption by CNZ-1 was unaffected by these factors. Further study showed that hydrogenase and some amides were involved in Pd(II) reduction by CNZ-1. Besides, Pd-NPs produced by CNZ-1 cells (bio(CNZ-1)-Pd-NPs) seemed more effective than those produced by MR-1 cells (bio(MR-1)-Pd-NPs) in mediating 4-nitrophenol (4-NP) reduction by NaBH4. For the bio(CNZ-1)-Pd-NPs supplemented system, the k(1) (zero-order rate constant) values were 2.49-, 2.76- and 1.91-fold of the bio(MR-1)-Pd-NPs supplemented system when the concentrations of NPs were 33 mg L-1, 83 mg L-1 and 167 mg L-1, respectively. The Pd recovery process by CNZ-1 is simple, efficient and environmentally friendly, and this biotechnology has potential practical application in treating mining wastewater.
DOI10.1039/c7ra07438g
项目资助者National Natural Science foundation of China(51608519) ; National Natural Science foundation of Shandong Province, China(ZR2016EEB10)
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收录类别SCI
关键词[WOS]SULFATE-REDUCING BACTERIA ; PALLADIUM NANOPARTICLES ; POLYCHLORINATED-BIPHENYLS ; BIOREDUCTIVE DEPOSITION ; HYDROGEN-PEROXIDE ; AQUEOUS-SOLUTION ; RECOVERY ; DEHALOGENATION ; SURFACES
文章类型Article
语种英语
WOS研究方向Chemistry
WOS记录号WOS:000409096300062
引用统计
文献类型期刊论文
条目标识符http://ir.yic.ac.cn/handle/133337/23420
专题海岸带生物学与生物资源利用所重点实验室
通讯作者Hu, Xiaoke; Hu, Xiaoke(Chinese Acad Sci, Yantai Inst Costal Zone Res, Yantai 264000, Peoples R China)
作者单位Chinese Acad Sci, Yantai Inst Costal Zone Res, Yantai 264000, Peoples R China
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GB/T 7714
Zhang, Haikun,Hu, Xiaoke,Hu, Xiaoke. Rapid production of Pd nanoparticle by a marine electrochemically active bacterium Shewanella sp CNZ-1 and its catalytic performance on 4-nitrophenol reduction[J]. RSC ADVANCES,2017,7(65):41182-41189.
APA Zhang, Haikun,Hu, Xiaoke,&Hu, Xiaoke.(2017).Rapid production of Pd nanoparticle by a marine electrochemically active bacterium Shewanella sp CNZ-1 and its catalytic performance on 4-nitrophenol reduction.RSC ADVANCES,7(65),41182-41189.
MLA Zhang, Haikun,et al."Rapid production of Pd nanoparticle by a marine electrochemically active bacterium Shewanella sp CNZ-1 and its catalytic performance on 4-nitrophenol reduction".RSC ADVANCES 7.65(2017):41182-41189.
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