Gold nanowire assembling architecture for H2O2 electrochemical sensor

Morphological control of nanomaterials is of great interest due to their size and shape-dependent chemical and physical properties and very important applications in many fields such as biomedicine, sensors, electronics and others. In this paper, we reported a simple strategy for synthesizing gold n...

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Bibliographic Details
Published in:Talanta (Oxford) 2009-02, Vol.77 (4), p.1510-1517
Main Authors: Guo, Shaojun, Wen, Dan, Dong, Shaojun, Wang, Erkang
Format: Article
Language:English
Subjects:
Analytical chemistry
Biological and medical sciences
Biosensing Techniques - instrumentation
Biosensors
Biotechnology
Catalysis
Chemistry
Electrochemical methods
Electrochemistry - methods
Electrodes
Exact sciences and technology
Fundamental and applied biological sciences. Psychology
General, instrumentation
Gold - chemistry
Hydrogen Peroxide - analysis
Metal Nanoparticles - analysis
Methods. Procedures. Technologies
Microscopy, Electron, Scanning
Microscopy, Electron, Transmission
Nanotechnology - methods
Nanowires - analysis
Various methods and equipments
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Summary:Morphological control of nanomaterials is of great interest due to their size and shape-dependent chemical and physical properties and very important applications in many fields such as biomedicine, sensors, electronics and others. In this paper, we reported a simple strategy for synthesizing gold nanowire assembling architecture at room temperature. It is found that two important factors, the proper volume ratio of ethanol to water and poly(vinyl pyrrolidone) (PVP), will play important roles in synthesizing flower-like short gold nanowire assembling spheres. Furthermore, the obtained flower-like gold assembling spheres with high surface-to-volume ratio have been employed as enhancing materials for electrochemical sensing H(2)O(2). The present electrochemical sensing platform exhibited good electrocatalytic activity towards the reduction of H(2)O(2). The detection limit for H(2)O(2) was found to be 1.2 microM, which was lower than certain enzyme-based biosensors.
ISSN:0039-9140
1873-3573
DOI:10.1016/j.talanta.2008.09.042