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JMC 关于石墨烯-DNA
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Journal of Materials Chemistry Cite this: J. Mater. Chem., 2011, 21, 12873 DNA as a linker for biocatalytic deposition of Au nanoparticles on graphene and its application in glucose detection Jianbin Zheng,*Yaping He, Qinglin Sheng and Hongfang Zhang Taking advantages of the striking properties of both self-assembly and biocatalysis, a highly sensitive glucose electrochemical biosensor was proposed by using DNA–GE as biocatalysis target-guide to deposit Au nanoparticles (AuNPs). AuNPs interacted with thiol and amino groups of DNA strands, which make the reaction much easier and faster. Furthermore, the proposed AuNPs/glucose oxidase (GOx)/DNA–GE/glassy carbon (GC) modified electrode achieved the direct electrochemistry and electrocatalysis of GOx. The growth of AuNPs was confirmed by scanning electron microscopy and electrochemical methods. The characterizations of the electrode modified after each assembly step and the content of AuNPs on the electrode surfaces during the growth process were investigated by cyclic voltammetry. The amount of AuNPs was relative to the amount of glucose oxidized accompanying with the biocatalytic process of GOx. The biosensor showed a linearity with glucose concentration in the range of 0.8–50 mM with a detection limit of 0.3 mM (S/N ¼ 3). The sensitivity was 2.4 10 4 mA mM 1 . The combination of self-assembly and biocatalysis offers the new design of enzymatic biosensors with potential applications in direct electrochemistry and biocatalysis. 希望做传感器的大家相互多交流呀[ Last edited by hejin04c on 2011-9-24 at 09:07 ] |
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★ 一星级,一般
hejin04c: 牛 2011-09-09 22:02:13
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RESEARCH ARTICLE Assessing the potential exposure risk and control for airborne titanium dioxide and carbon black nanoparticles in the workplace Min-Pei Ling & Chia-Pin Chio & Wei-Chun Chou & Wei-Yu Chen & Nan-Hung Hsieh & Yi-Jun Lin & Chung-Min Liao Received: 26 October 2010 /Accepted: 7 January 2011 /Published online: 28 January 2011 # Springer-Verlag 2011 Environ Sci Pollut Res (2011) 18:877–889 DOI 10.1007/s11356-011-0447-y |
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zdw04484楼
2011-09-05 22:40
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顶一下，感谢分享！
wf20045楼
2011-09-06 16:52
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五星好评 顶一下，感谢分享！
麦客0018楼
2011-09-07 20:03
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五星好评 顶一下，感谢分享！
zhuqiang197612楼
2011-09-10 08:39
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五星好评 顶一下，感谢分享！
wower13楼
2011-09-10 08:51
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五星好评 顶一下，感谢分享！
chinachen51814楼
2011-09-10 09:31
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五星好评 顶一下，感谢分享！
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