Document Detail


Morphology controllable synthesis of monkshoodvine root-bark like carbon and its biosensing application.
MedLine Citation:
PMID:  22218737     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
Unique monkshoodvine root-bark like morphology carbon materials (MLC) have been successfully synthesized under hydrothermal conditions. Utilizing the merits of high surface area and good electron conductivity of the MLC, a layered biosensor designed by assembling the MLC, hemoglobin (Hb) and gold nanoparticles was further developed. Scanning electron microscope and transmission electron microscope showed that the morphology of carbon materials can be successfully controlled simply by moderating the initiator amount of precursor and reaction temperature. The results indicated that the MLC was formed at the reaction condition of 5 mg Ferrocene + 6 mL CCl(4) at 280 °C. Electrochemical methods, such as cyclic voltammetry and electrochemical impedance spectroscopy, were used to characterize the layered biosensor and its application for sensitive detection of hydrogen peroxide (H(2)O(2)). Under optimized experimental condition, the linear range for the determination of H(2)O(2) was 0.06 μM to 1.6 mM with a detection limit of 0.03 μM (S/N = 3). Furthermore, the biosensor also showed a fast response (within 2 s) and high stability.
Authors:
Yaping He; Jianbin Zheng; Qinglin Sheng
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-1-4
Journal Detail:
Title:  The Analyst     Volume:  -     ISSN:  1364-5528     ISO Abbreviation:  -     Publication Date:  2012 Jan 
Date Detail:
Created Date:  2012-1-5     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0372652     Medline TA:  Analyst     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Affiliation:
Institute of Analytical Science/Shaanxi Provincial Key Laboratory of Electroanalytical Chemistry, Northwest University, Xi'an, Shaanxi 710069, China. zhengjb@nwu.edu.cn.
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