Journal
ELECTROCHIMICA ACTA
Volume 85, Issue -, Pages 628-635Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2012.08.118
Keywords
Sulfonated graphene; Gold nanoparticles; Hydrogen peroxide; Electrocatalyst
Categories
Funding
- National Natural Science Foundation of China [21105002, 21003001, 21201010]
- fund project for Henan Key Technologies RD Programme [122102310516, 12B150002]
Ask authors/readers for more resources
In this study, a new type of two-dimensional (2D) hybrid heterostructure was demonstrated by electrostatic assembling the anionic sulfonated graphene sheets (SGS) and positively charged gold nanoparticles (GNPs). In this strategy, water-dispersible sulfonated graphene dispersions were synthesized by covalently binding sulfonic acid groups in reduced grapheme oxide. Then, the negative charge of SGS was strong enough to drive the formation of the 20 nanomaterials with positively charged GNPs through electrostatic interaction. Furthermore, we utilized the as-prepared GNPs/SGS nanocomposites as the electrochemical enhanced material for H2O2 sensing (as the model analyte). The GNPs/SGS-modified glassy carbon electrode showed improved electrochemical catalytic ability toward electrochemical reaction of H2O2, and thus a rapid response, wide linear range and low detection limit were obtained using the chronoamperometry technique. This work might find promising applications in developing a new type of enzymeless biosensor. (C) 2012 Elsevier Ltd. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available