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Novel snowflake-like Pt–Pd bimetallic clusters on screen-printed gold nanofilm electrode for H2O2 and glucose sensing
- Source :
-
Biosensors & Bioelectronics . Jun2012, Vol. 36 Issue 1, p262-266. 5p. - Publication Year :
- 2012
-
Abstract
- Abstract: Novel snowflake-like Pt–Pd bimetallic nanoclusters (Pt–PdBNC) were synthesized on a screen-printed gold nanofilm electrode (SPGFE) substrate by electrochemically reducing precursors with a new constant potential/multi-potential step deposition strategy. The electrocatalytic behavior of the modified electrode (SPGFE/Pt–PdBNC) towards H2O2 was investigated. The results indicate that the as-prepared Pt–PdBNC significantly enhances the electrochemical reduction of H2O2 in neutral media, exhibiting preferable electrocatalytic performance compared to Pt and Pd monometallic nanoclusters. Under optimum conditions, SPGFE/Pt–PdBNC offers linear responses for H2O2 in the concentration range from 0.005 to 6mM with an ultrahigh sensitivity of 804mAM−1 cm−2 and excellent selectivity. Furthermore, glucose oxidase was immobilized on the Pt–PdBNC structure, and the fabricated biosensor presents favorable properties for glucose sensing. [Copyright &y& Elsevier]
Details
- Language :
- English
- ISSN :
- 09565663
- Volume :
- 36
- Issue :
- 1
- Database :
- Academic Search Index
- Journal :
- Biosensors & Bioelectronics
- Publication Type :
- Academic Journal
- Accession number :
- 76308423
- Full Text :
- https://doi.org/10.1016/j.bios.2012.03.030