Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
6615273 | Electrochimica Acta | 2013 | 27 Pages |
Abstract
A facile spontaneous redox method is developed to obtain uniform palladium nanoparticles (PdNPs) distributed on surfactant-functionalized multi-walled carbon nanotubes (MWCNTs) at room temperature. In this synthesis, hexadecyltrimethylammonium bromide (CTAB) was self-assembled onto MWCNTs to provide adsorption sites for PdCl42â ions. Interestingly, PdCl42â was spontaneously reduced though a galvanic cell effect between PdCl42â and MWCNTs. The as-prepared Pd catalyst showed excellent catalytic activity toward oxidation of ethanol and glucose in an alkaline medium. Inspired by this, a glucose enzyme-free biosensor was developed with a wide linear range covering from 1 mM to 20 mM and a high sensitivity of 11 μA mMâ1 cmâ2 (to 1-10 mM) and 6.3 μA mMâ1 cmâ2 (to 11-20 mM). These results indicate that the as-synthesized Pd catalyst could be a great potential material for improving performance of direct ethanol fuel cells and glucose sensors.
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Chemical Engineering (General)
Authors
Zhi-xiong Cai, Cong-cong Liu, Geng-huang Wu, Xiao-mei Chen, Xi Chen,